Page 1 COMSPHERE 392x P MODEMS MODELS 3920 P 3921 P INSTALLATION AND OPERATION MANUAL Document No. 3920-A2-GN31-30 November 1996...
Page 2 Paradyne Corporation makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. Further, Paradyne Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Paradyne Corporation to notify any person of such revision or changes.
Page 3: Important Safety Instructions
Important Safety Instructions Read and follow all warning notices and instructions marked on the product or included in the manual. This product is intended to be used with a three-wire grounding type plug – a plug which has a grounding pin. This is a safety feature. Equipment grounding is vital to ensure safe operation.
Page 4 COMSPHERE 392xPlus Modems Notices November 1996 3920-A2-GN31-30...
Page 5: Table Of Contents
Model 3920Plus Modem Installation ......Connecting Cables to the Model 3920Plus Modem Removing and Replacing the Model 3920Plus Modem Model 3921Plus Modem Installation .
Page 6 COMSPHERE 392xPlus Modems DCP Configuration AT Command Set and S-Registers Dial Access Security Appendices Glossary Index Poll List Branch ......... Control Branch .
Page 7 Figure Model 3920Plus Standalone Singleport and Multiport Modems Model 3921Plus Singleport Modem Model 3921Plus Multiport Modem Model 3920Plus Multiport Back Panel and Power Supply Modem’s Back Connector Plates Installing the Model 3921Plus Modems Circuit Pack Lock Model 3920Plus DCP Optional SDCP and Model 3921Plus Faceplate...
Page 8 COMSPHERE 392xPlus Modems Table 392xPlus Operational Modes Technical Specifications for 392xPlus Modems 392xPlus DCP LEDs SDCP LEDs Top-Level Menu Status Common Operational Messages Dial Access Security Messages Health and Status Messages Backup Status Screens Valid Ranges for VF Thresholds Valid Dial Command Modifiers DTE Interface Configuration Options —...
Page 9: Table Page
Table Online Operation Mux Operation EIA-232-D Pin Assignments VF Connector Pin Assignments V.25bis Commands V.25bis Response Messages ASCII Characters Factory Default Configuration Options 3920-A2-GN31-30 ........... . .
Page 10: Preface
Chapter 2 provides instructions for installing the 392xPlus modems. Chapter 3 provides the information required to operate the Model 3920Plus using the diagnostic control panel and the Model 3921Plus using the COMSPHERE 3000 Series Carrier’s shared diagnostic control panel (SDCP).
Page 11: Related Documents
Call your sales representative to order additional product documentation. viii COMSPHERE 3000 Series Carrier, Installation Manual 3600 Hubbing Device, Feature Number 3600-F3-300, Installation Instructions COMSPHERE 392xPlus Modems, Models 3920Plus and 3921Plus, Installation Instructions COMSPHERE 3900 Series Modems, Model 3921Plus, Ferrite Choke Installation Instructions November 1996...
Page 12: Introduction
........Model 3920Plus Standalone Singleport Modem Model 3920Plus Standalone Multiport Modem...
Page 13: Model 3920Plus Standalone Singleport Modem
Chapter 3, DCP Operation. Model 3920 Plus Standalone Multiport Modem The Model 3920Plus multiport is a standalone modem (Figure 1-1), with an integral time division multiplexer (TDM) and a modem sharing device (MSD) as standard equipment. The TDM provides time division multiplexing of up to four independent ports over point-to-point lines using the V.34 family or V.32 family modulation.
Page 14: Model 3920Plus Standalone Singleport And Multiport Modems
Model 3920 Plus Singleport and Multiport Housing DIAGNOSTIC CONTROL PANEL SPEAKER Singleport Modem Back Panel DIAL LEASED Figure 1-1. Model 3920 Plus Standalone Singleport and Multiport Modem s 3920-A2-GN31-30 LCD AND KEYPAD STATUS INDICATORS Multiport Modem Back Panel POWER ON/OFF DTE 3 POWER IN DTE 2...
Page 15: Model 3921Plus Carrier-Mounted Singleport Modem
The user interface to any Model 3921Plus modem is through the shared diagnostic control panel (SDCP), an optional feature which operates in a manner similar to the DCP on the Model 3920Plus modems. For a better understanding of DCP operation, refer to Chapter 3, DCP Operation.
Page 16: Model 3921Plus Singleport Modem
FACEPLATE Status Alrm Test Dial Busy Serv Front Panel Spkr 3921 Plus Figure 1-2. Model 3921 Plus Singleport Modem 3920-A2-GN31-30 BACK CONNECTOR PLATE EIA232/V.24 EDGE CARD CONNECTOR FUTURE 496-14178a-04 November 1996 Introduction EIA232/V.24 CONNECTOR GROUNDING FUTURE...
Page 17: Model 3921Plus Multiport Modem
COMSPHERE 392xPlus Modems FACEPLATE Status Alrm Test Dial Busy Serv Port Front Panel Spkr 3921 Plus Figure 1-3. Model 3921 Plus Multiport Modem EDGE CARD CONNECTORS PORT PORT PORT PORT November 1996 BACK CONNECTOR PLATES 49614423a-03 3920-A2-GN31-30...
Page 18: Xplus Operational Modes
Additional VF parameters under the V.32 family modulations in 4-wire mode. International Support to correctly detect the call progress signals (dial tone, busy, fast busy, ringback) for a variety of countries. Channel adaptive Trellis-Coded Modulation – Paradyne’s advanced Trellis-Coded transparent forward error correction for Trellis multipoint and high-speed point-to-point applications.
Page 19: Applications
COMSPHERE 392xPlus Modems Network management system (NMS) support through the COMSPHERE 6800 or 6700 Series NMS using Advanced Diagnostic protocol (ADp). Automatic and manual backup with standby capabilities for 4-wire/2-wire leased-line applications. (The backup facility may be either a 2-wire dial line or a 2-wire leased line.) 392x Plus Singleport Features Features specific to 392xPlus singleport modems are: Four-wire/two-wire leased-line modulations.
Page 20: Dual-Leased Backup
CCITT V.34 modulation. The two top rates of 31,200 and 33,600 bps (Paradyne), however, only function with other 392xPlus modems. In Multiport mode, the V.34 modulation will not operate at line rates of 31,200, 26,400, and 21,600 bps, and is only compatible with other 392xPlus modems.
Page 21: Multiport Backup
COMSPHERE 392xPlus Modems The CCITT standard for V.34 modulation includes dial- or leased-line operation. For proper leased-line operation, one modem must be designated as the answer modem while the other modem must be designated as the originate modem. The V.34 standard also includes asymmetric rates, automatic adjustment of the transmit power level, and automatic adjustment of the symbol (baud) rate for optimal data throughput.
Page 22: Government Requirements And Equipment Return
FCC registration number and ringer equivalence number (REN) for this equipment. The label is located on the bottom of the Model 3920Plus modem and on the modem’s circuit card assembly on the Model 3921Plus. If requested, this information must be provided to the telephone company.
Page 23: Canada
Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com Via Telephone: Call our automated call system to receive current information via fax or to speak with a company representative.
Page 24: Technical Specifications
12,000, 9600, 7200, 4800, 2400 bps) Paradyne V.32 terbo (19,200, 16,800 bps) CCITT V.32bis (14,400, 12,000, 9600, 7200, 4800 bps) CCITT V.32 (9600, 4800 bps) Paradyne Trellis Multipoint (19,200, 14,400, 9600, 7200, 4800, 2400 bps) CCITT V.22bis (2400 bps) CCITT V.27bis (4800, 2400 bps) CCITT V.33 (14,400, 12,000 bps)
Page 25: Technical Specifications For 392Xplus Modems
COMSPHERE 392xPlus Modems Technical Specifications for 392x Plus Modems Specifications POWER CONSUMPTION Model 3920 Plus Singleport Model 3921 Plus Singleport Model 3920 Plus Multiport Model 3921 Plus Multiport DIMENSIONS Weight Height Width Depth TRANSMIT LEVEL Leased Line (North America) Leased Line (All Other Countries) Dial Line (North America) Dial Line (All Other Countries) TELEPHONE INTERFACE...
Page 26: Modem Installation
Overview 392xPlus Modem Package Model 3920Plus Modem Installation Connecting Cables to the Model 3920 Modem Removing and Replacing the Model 3920Plus Modem Model 3921Plus Modem Installation Removing and Replacing the Model 3921Plus Modem 392xPlus Modem Power-Up Selecting Factory Configuration Options for 392xPlus...
Page 27: Customer-Supplied Equipment
Customer-Supplied Equipment The following customer-supplied equipment is required to complete a data communications system using the Model 3920Plus modem: One (singleport) or four (multiport) DTEs with available EIA-232-D serial port(s). Standard EIA-232-D cables with one (singleport) or four (multiport) DB-25-P connectors at one end to attach to the modem.
Page 28: Model 3920Plus Modem Installation
DTE should be minimized if DTE data rates exceed 19,200 bps. Also, low capacitance cables may be necessary for speeds greater than 19,200 bps or distances greater than 50 feet. The back panel of the Model 3920Plus modem (Figure 2-1) has the following switches and connectors: An ON/OFF power switch.
Page 29: Dte Connection
COMSPHERE 392xPlus Modems LEASED DIAL 8-POSITION, 8-CONDUCTOR PLUG FOR LEASED-LINE NETWORK OPERATION 6-POSITION, 4-CONDUCTOR PLUG FOR PERMISSIVE NETWORK OPERATION NOTE: THE DIAL JACK IS ALSO USED FOR 2-WIRE LEASED BACKUP. Figure 2-1. Model 3920 Plus Multiport Back Panel and Power Supply DTE Connection Use the following steps to connect an EIA-232-D cable from the modem to a DTE: 1.
Page 30: Power Supply Connection
1. Insert the 8-position, 8-conductor modular plug into the jack labeled LEASED (Figure 2-1). 2. Insert the other end of the modular cord into the leased-line network interface. 3. If the Model 3920Plus has a backup line, follow the steps listed in the Dial Backup Connection section. Dial Connection The telephone company provides the line termination jacks for the permissive service you request.
Page 31: Removing And Replacing The Model 3920Plus Modem
NMS (Figure 2-1). Refer to Document Number, 3610-A2-GZ45, 3600 Hubbing Device, Feature Number 3600-F3-300, Installation Instructions, for a description of the 3600 Hubbing Device. Installation for the 3920Plus is the same as for the 3610 DSU. 2. Connect the 3600 Hubbing Device to the network management system (Figure G-4 in Appendix G).
Page 32: Modem's Back Connector Plates
SDU is required when the modems in the carrier are controlled by an NMS, or when multiple carriers in a cabinet configuration are to be controlled by a single shared diagnostic control panel (SDCP). The SDCP of the COMSPHERE 3000 Series Carrier is the user interface to the Model 3921Plus modem.
Page 33: Installing The Model 3921Plus Modems
COMSPHERE 392xPlus Modems 3000 SERIES CARRIER MODEL 3921 Plus SINGLEPORT MODEM LATCH CIRCUIT CARD GUIDES 3000 SERIES CARRIER MODEL 3921 Plus MULTIPORT MODEM LATCH CIRCUIT CARD GUIDES 495-14708 Figure 2-3. Installing the Model 3921 Plus Modem November 1996 3920-A2-GN31-30...
Page 34 If the Model 3921Plus modem is to communicate with an installed SDCP, install the modem as described above and perform the following steps: 1. Press the slot selection position (01 on the first LCD line in following screen example). 2. Press the F1 ( 3.
Page 35: Circuit Pack Lock
COMSPHERE 392xPlus Modems 6. Once you have determined that the modem is installed properly and completed its power-up self-test, rotate the circuit pack lock until it covers the faceplate latch (Figure 2-4) and tighten the retention screw on the circuit pack lock. This prevents the modem from accidently being removed once it is installed in a carrier.
Page 36: Removing And Replacing The Model 3921Plus Modem
Removing and Replacing the Model 3921 Plus Modem When removing the Model 3921 Plus modem from the carrier, always use a ground strap when handling the modem. Always store the Model 3921 Plus modems in an antistatic bag when it is removed from the carrier.
Page 37: Using The Diagnostic Control Panel (Dcp)
COMSPHERE 392xPlus Modems configuration, then you must change the factory setting using either the modem’s DCP (as described in the following sections) or the AT command set. The purpose of having preset configurations is so that you can have a “head start” in getting your modem operating and reducing the amount of time required to configure your modem.
Page 38: Dcp Operation
........Model 3920Plus Diagnostic Control Panel...
Page 39: Overview
There are two types of diagnostic control panels (DCP), the DCP on the standalone Model 3920Plus modems and the shared diagnostic control panel (SDCP), an optional feature, used with the Model 3921Plus installed into a COMSPHERE 3000 Series Carrier. Both DCPs have...
Page 40: Status Indicators
The 392xPlus modem status indicators continuously provide information on the modem’s operating condition. All of the status indicators on the Model 3920Plus appear on the DCP (Figure 3-1), whereas the status indicators for the carrier-mounted Model 3921Plus are located on the Model 3921Plus modem’s faceplate and the SDCP faceplate (Figure 3-2).
Page 41: Optional Sdcp And Model 3921Plus Faceplate
COMSPHERE 392xPlus Modems MULTIPORT SINGLEPORT Status Status Status Alrm Alrm Alrm Diag Test Test Diag Dial Dial Busy Busy Serv Serv Port Front Panel Front Panel Spkr Spkr 3921 Plus 3921 Plus SELECT STATUS INDICATORS OK Alarm BckUp Test NETWORK DEVICE ALARM DIAL...
Page 42: Xplus Dcp Leds
Table 3-6 in the Device Health and Status section of this chapter.) Diag green The modem is receiving diagnostic communications (either a command or a status poll). (3920Plus only) Test/142 yellow Flashing – The modem is involved in a firmware upgrade. Normal operation is not possible.
Page 43: Sdcp Leds
COMSPHERE 392xPlus Modems Label Color ON – The selected port* is one of the mux ports (either 1, 2, 3, or 4). Port* 1,2,3,4 green (3921Plus OFF – The port* is not selected. multiport only) TXD/103* green The modem is receiving data from the selected port* to transmit. (ON equals space.) RXD/104* green Data is being transferred to the selected port* .
Page 44: Diagnostic Control Panel Operation
Diagnostic Control Panel Operation The 392xPlus modem’s diagnostic control panel (DCP) is the user interface to all functions used to configure and control the modem. In addition to the status LEDs, this interface includes the liquid crystal display (LCD) and keypad (Figure 3-3). LCD TOP LINE MOVES UP ONE...
Page 45: Other Indicators
Range indicator, refer to VF Thresholds Update in this chapter. Keypad The DCP on the Model 3920Plus has seven keys while the optional SDCP of the COMSPHERE 3000 Series Carrier has eight keys. The additional key on the carrier is the connect the SDCP to a specific slot in the carrier.
Page 46: Menu Structure
Function keys F1, F2, and F3 select the LCD choice that appears above the function key. Refer to the Summary section in Chapter 4 for the exception. If the displayed LCD choice spans more than one function key, then any of the function keys select that choice.
Page 47 COMSPHERE 392xPlus Modems The menu tree contains the following branches: Status Configure PList Control Test SubHS Call Setup Talk/Data Security Remote All menu tree branches are discussed later in Chapter 3 except for Configure, which is discussed in Chapter 4, and Security, which is discussed in Chapter 6. Functions that appear on the LCD vary depending upon the type of model installed, its operating mode, and software configuration.
Page 48: Top-Level Menu Status And Operational Messages
Top-Level Menu Status and Operational Messages Access to all menu tree branches from the DCP begins at the Top-Level menu, the head of the menu hierarchy. The LCD’s top line identifies the modem status, as listed in Table 3-3, while the bottom line displays the main menu tree branches as well as operational and security messages, as listed in Table 3-4 and Table 3-5.
Page 49 COMSPHERE 392xPlus Modems Status Message Call Failure Busy Signal Delayed Number Dial Line in Use Forbidden Number Invalid Number Line Occupied No Answer Tone No Dial-DTR No Dial-Test No Dial Tone No Quiet Answer Ringback Timeout Trunk Busy Wrong Call The Delayed Number and Forbidden Number messages appear only in countries where the number of repeat call attempts are restricted.
Page 50 Status Message Call Disconnect ATH Disconnect Bad Lines Disc No Carrier Disc DTR Disconnect EC Disconnect Inv Rate Disc LnCurrnt Disc LongSpace Disc NoData Disc Disconnecting RmtCmnded Disc Talk Mode Firmware DownldOnly Download Result Mode Frmware Upgrade RemClone Failed Remote Clone Bcast Clone Done AT Command...
Page 51: Common Operational Messages
COMSPHERE 392xPlus Modems Messages listed in Table 3-4 are common operational messages that occur during modem operation. These messages normally appear on the second line of the LCD. Common Operational Message Please Wait... A command to a local device takes more than two seconds to complete. Command Sent...
Page 52: Quick Configuration Display
The Top-Level menu’s main branches appear on the LCD in the order of Status, Configure, Control, Test, Call Setup, Talk/Data, Security, and Remote. These branches are discussed in this chapter except for the Configure branch which is reserved for Chapter 4, DCP Configuration, and the Security branch which is reserved for Chapter 6, Dial Access Security.
Page 53 COMSPHERE 392xPlus Modems The following provides information about the Quick Configuration LCD display. ffff xxxx yyyyy To exit the Quick Configuration function and return to the Top-Level menu, press the key. 3-16 Displays the network position of the modem. The letter C indicates this is a control modem, and T indicates this is a tributary modem.
Page 54: Status Branch
Status Branch The Status branch of the Top-Level menu allows you to view the current status of the leased-line or dial connection, the identity (for example, serial number and model number) of your equipment, and the DTE interface. PList Configure Status DeviceHS Identity...
Page 55: Health And Status Messages
COMSPHERE 392xPlus Modems Device Health and Status (DeviceHS) DeviceHS provides a ‘‘snapshot” of current modem alarms which are active at the time the DeviceHS function is selected. To access DeviceHS from the Status branch, make the following selection: Select DeviceHS. If alarms are present, press the appropriate function key to view the messages associated with these alarms (Table 3-6).
Page 56 Type Message Status Subtree Truncate Test Mode Disabled On Dial Backup FW Downloading Primary Line Good Backup Line Bad Data Blocked On Lease Backup PSTN Test Fail Dial Dial Make Busy Mode Make Busy Mode Service Line Short Hold Time Non-Answering Thresh* RSL High Threshd...
Page 57 COMSPHERE 392xPlus Modems Type Message Security Database Reset Password Protect Mode Change Password Change Database Change Ports 1 Rx Data Alarm Ports 2 Ports 2 Tx Data Alarm Ports 3 Ports 3 Ports 4 DTR Alarm CTS Alarm RTS Alarm DSR Alarm LSD Alarm Auto Stream Dis...
Page 58: Displaying Vf Conditions
Displaying VF Conditions To display VF conditions, select Display from the Status:VF screen. If the modem is receiving a signal, the signal quality appears on the LCD’s bottom line. If the modem is not receiving a signal, the message No Signal appears. Press the Not all conditions are available at 4800 bps.
Page 59: Clearing Vf Counters
COMSPHERE 392xPlus Modems EchoFreqOff Phase Hts Impul Hts DropOuts Retrains Phas Jtr NonLinear FreqOffset Gain Hts Clearing VF Counters The Clear command resets the retrain, impulse hits, gain hits, phase hits, and drop outs. To clear the VF counters, select Clear. 3-22 Echo Frequency Offset displays the frequency offset of the far end echo.
Page 60: Identity
Serial number is an 8-digit number that identifies the modem. Model number is an alphanumeric number that identifies the modem as either a Model 3920Plus or Model 3921Plus modem. Firmware revision level is an alphanumeric number that identifies the level of firmware loaded in the modem.
Page 61: Dte
COMSPHERE 392xPlus Modems DTE displays the state and/or activity of the following interface leads: LSD, DTR, DSR, TST, TXD, RXD, RTS, and CTS. The interface leads status is updated every 5 seconds. To access DTE from the Status branch, make the following selections: Press the Select the appropriate port by pressing the corresponding function key.
Page 62 V.34 When running V.34 modulation, this function displays information about the modem’s receiving and transmitting data rate, symbol rate, transmitting level, and asymmetric rate. The V.34 status display is available only when the modem is configured for V.34 modulation. To access V.34 from the Status branch, make the following selection: Select V.34.
Page 63: Backup
COMSPHERE 392xPlus Modems Backup The Status Backup function displays the configuration of the modem’s current operating line facility and the configuration and condition of the inactive line. The modem’s rear panel has two line interface jacks: LEASE and DIAL (see Figure 2-1 in Chapter 2). The jack labeled LEASE is the APL primary interface and accepts either 2-wire or 4-wire APL.
Page 64: Backup Status Screens
Table 3-7 provides information about the Status Backup screens. The first column lists all possible configurations for the modem’s currently active line. The second column lists all possible configurations for the modem’s inactive lines. The third column provides information about the inactive line condition.
Page 65: Options
COMSPHERE 392xPlus Modems Options The Options Status function displays all optional firmware features currently installed in the modem. If no firmware options are installed, None_Installed appears on the LCD. To access Options from the Status branch, make the following sections: Press the If optional features are installed in the modem, they appear on the LCD’s bottom line.
Page 66: Service Log
To display sequence faults, select Display. The LCD displays the first sequence fault field. (Sequence fault fields range from 1 to 8 and are identified by a number in the upper right corner.) Press the The message Modem O.K. appears if no sequence faults have occurred. To remove sequence fault records from both the LCD and nonvolatile memory, select Clear.
Page 67: Configure Branch
COMSPHERE 392xPlus Modems Select Nxt to scroll through the entries in the Service Log. To exit this function and remain in the Status branch, press the Top-Level menu, press the Configure Branch The Configure branch of the LCD allows you to change and save the modem’s configuration options.
Page 68: Display
Press the Within a network link, a control modem can communicate with a tributary modem by using the tributary modem’s network management address for polling functions. Each TMp tributary modem must have a different network management address. Refer to the Misc section in Chapter 4 for a description of the network management address (NetMngmtAddress) configuration option.
Page 69: Clear
COMSPHERE 392xPlus Modems Select Nxt to scroll through the entries in the Active or Skip poll lists. To exit this function and remain in the PList Display branch, press the to the Top-Level menu, press the Clear The Clear function does not appear in Remote mode. Clear deletes the modem’s poll list.
Page 70: Add
To implement Change, select the appropriate function (Active, Delete, or Skip). (For Skip, you will need to press the The function field (yyyyyy) displays the function selected (Active, Delete, or Skip). The address field (xxx) displays the network management address of the modem to be changed. The valid address field range is from 001 to 256.
Page 71: Acquire
COMSPHERE 392xPlus Modems The message Command Complete appears on the LCD to indicate that the tributary modem will be added to the control modem’s poll list. To exit this function and remain in the PList branch, press the Top-Level menu, press the Acquire The Acquire function does not appear in Remote mode.
Page 72: Control Branch
The number field (yyy) indicates the total number of devices acquired for the poll list. To exit this function and remain in the PList branch, press the Top-Level menu, press the Control Branch The Control branch of the Top-Level menu allows you to manage hardware and software functions, such as speaker volume, reset, busy out, and firmware download.
Page 73: Speaker
COMSPHERE 392xPlus Modems Speaker Speaker allows you to make temporary adjustments to the modem’s speaker volume. Upon a reset, speaker volume returns to its configured setting. For more information on speaker settings, refer to the Misc section in Chapter 4. To access Speaker from the Control branch, make the following selection: Select Speaker.
Page 74: Reset
Reset Reset causes the modem to stop operation and perform a complete program restart. The modem begins the power-up test sequence that ends with the Top-Level menu displayed on the LCD. Configuration options stored in an Active (Saved) configuration area are copied to the Active (Operating) configuration area.
Page 75: Selecting All Ports
COMSPHERE 392xPlus Modems The port field (for example, Port1) displays the selected port. The available Data Stream action (Disable or Enable) appears on the second line of the LCD beside the port field. If the modem’s data transmitter is enabled, the word Disable appears to indicate that you may disable the data transmitter by selecting this action.
Page 76: Eia Leds
To change the data stream on all ports again, press the F1 key. To exit this function and remain in the Control branch, press the Top-Level menu, press the EIA LEDs This function allows the front panel EIA LEDs to display and change the activity of a selected digital interface.
Page 77: Make Busy/Remove Make Busy
COMSPHERE 392xPlus Modems Press the F1 key until the appropriate digital interface appears. Select the appropriate interface by pressing the corresponding function key. After selecting the desired interface, the message Command Complete appears on the bottom line of the LCD and the selected interface appears in the xxxxx field. The Port 1 interface is the only display allowed on the 3921 Plus modem in Singleport mode, therefore the entire EIA LEDs branch is masked.
Page 78: Service Line/Disconnect Service Line
Press any function key to select RemoveMakeBusy. The message Command Complete appears on the LCD. Service Line/Disconnect Service Line The Service Line/Disconnect Service Line is only available in Models 3921-B1-001 and 3021-B1-011. The Service Line function allows you to switch a specific Model 3921Plus installed in a COMSPHERE 3000 Series Carrier from normal leased or dial operation to service-line operation.
Page 79: Download Software
COMSPHERE 392xPlus Modems To disconnect the modem from the service line and resume normal operation, press the (returning to Control branch). From the Control branch, press the appears. Press F1 (DiscServiceLine). The call and service line disconnect and the message Command Complete appears.
Page 80: Clone Remote In Point-To-Point Configurations
Press the Download_Code. The DwnLoadSoftware screen appears. Press any function key to select Clone_Remote. The next screen to appear is determined by the modem’s configuration. Refer to the appropriate section based on your modem’s configuration; Clone Remote in Point-to-Point Configurations, Clone Remote in Broadcast Configurations, or Clone Remote in Multipoint Configuration.
Page 81 COMSPHERE 392xPlus Modems From the Choose DLL Type screen, press the F1 key to select SC_Clone to request the transfer of an exact copy of the tributary modem’s firmware to the VF connected control modem. Proceed to the section titled Implementing a Clone Remote Operation, which follows the descriptions of multipoint cloning operations.
Page 82: Clone Remote In Multipoint Configurations
Clone Remote in Multipoint Configurations A Trellis Multipoint (TMp) control modem can be used to download firmware to just one tributary modem (Single) or to all of its tributary modems (Multiple). A Trellis Multipoint (TMp) tributary modem cannot download firmware to its control modem. To download firmware to a TMp control modem use a point-to-point dial connection, an NMS, or a PC controller.
Page 83 COMSPHERE 392xPlus Modems Cloning a Single TMp Remote Press the F1 key to select Single Clone Remote. The address field (xxx) displays the network management address of the modem that receives the download. The valid address field range is from 001 to 256. To increment digits within the address field (xxx), use the ( _ ) under the digit to be incremented.
Page 84 Cloning a Multiple TMp Remote Press the F3 key to select Multiple Clone Remote. After completing this action, proceed to the next section titled Implementing a Clone Remote Operation. Viewing Multiple TMp Clone Results From the Choose DLL Type screen, press the view the results of the last multiple TMp clone operation.
Page 85: Implementing A Clone Remote Operation
COMSPHERE 392xPlus Modems Implementing a Clone Remote Operation The modem begins a transfer of its own program to the remote modem. This process takes the communication link out-of-service for a period of time depending on the data rate of the link. If the Clone Remote process is started and then interrupted, the remote modem is left in a partially programmed state in which its functional capabilities are limited to those required to initiate and complete another download attempt.
Page 86 If unsuccessful, the modem remains in the Download Transfer mode. The LCD’s top line displays RemClone Failed and the bottom line displays one of the following messages: Incompat Modulat No Response Access Disabled Password Invalid No Circuit After successful establishment of a Remote Cloning Download session, the following screens appear.
Page 87: Automatic Firmware Download
COMSPHERE 392xPlus Modems Automatic Firmware Download New releases may be available for the 392xPlus modems. The latest 392xPlus firmware is available at no charge from the Automatic Firmware Download Center. Refer to page A in the front of this document for contact information. To download the firmware, your modem must be configured for dialing.
Page 88: Vf Thresholds Update
VF Thresholds Update The VF Thresholds Update function allows you to set the thresholds that determine the Health and Status alarm conditions for the VF parameters. Refer to Table 3-8 in this section for VF thresholds and their valid ranges and default values. To access VF_Thresh_Update from the Control branch, make the following selections: Press the VF_Thresh_Update.
Page 89 COMSPHERE 392xPlus Modems Note that a warning ( you enter an invalid VF threshold (out of range). You cannot save your edits until all thresholds are within their valid range. Refer to Table 3-8 for valid VF threshold ranges. Press the Select the F2 ( ) key to change the number above the cursor ( 9 ) to 0.
Page 90: Valid Ranges For Vf Thresholds
If the edited VF thresholds are valid, the Save command stores them into nonvolatile memory. When the Save completes, the message Save Completed appears. If the edited VF threshold is invalid (out of range), the error message Thd Out of Range appears. This indicates the Save procedure was unsuccessful.
Page 91: Test Branch
COMSPHERE 392xPlus Modems VF Thresholds Far Echo Frequency Offset Phase Jitter Phase Hits Impulse Hits Gain Hits Drop Outs Test Branch The Test branch of the Top-Level menu allows you to initiate various modem tests. Use these tests if you are having data communication problems, such as periodic character loss, random errors, or constant format errors.
Page 92: Abort
To access the Test branch from the Top-Level menu, make the following selections: Press the Abort Abort ends any test that is in progress and brings the modem back to the normal mode of operation. Confirmation is provided by the Command Complete message. To access Abort from the Test branch, make the following selection: Select Abort.
Page 93: Self
COMSPHERE 392xPlus Modems Self Self performs an internal self-test of the modem, which takes less than a minute to complete. The modem must be offline; otherwise, Invalid Command appears. When this test is run in Remote mode, it causes the Remote mode session to be lost.
Page 94: Local Analog Loopback
Loc Analog Loop This test is not available when using V.34 modulation in Multiport mode. Loc Analog Loop performs a local analog loopback (CCITT V.54 Loop 3), Figure 3-4, that verifies modem operation as well as the connection between the DTE and modem. The modem must be offline and in Synchronous or Asynchronous Direct mode to perform this test, otherwise Invalid Command appears.
Page 95: Remote Digital Loopback
COMSPHERE 392xPlus Modems The test delays 15 to 30 seconds to allow any outstanding network management messages to propagate before the VF channel is interrupted by the test. The message Started appears on the LCD, and the Test LED lights for the duration of the test. If OtherTestActive appears on the LCD, another test is in progress.
Page 96 To access Rem_Digital_Loop from the Test branch, make the following selections: Press the Select the appropriate port by pressing the corresponding function key. Press the other ports into view. This screen does not appear in Singleport mode. The message Started appears on the LCD, and the Test LED lights. If OtherTestActive appears on the LCD, another test is in progress.
Page 97: Local Digital Loopback
COMSPHERE 392xPlus Modems Loc Digital Loop Loc Digital Loop is issued by a local modem and forces it to loopback any data received from the remote modem (Figure 3-6 ). (This test operates the same as a CCITT V.54 Loop 2 except it is issued at your modem.) This is useful if a remote modem is incapable of initiating a remote digital loopback from its location.
Page 98: Pattern
This screen does not appear in Singleport mode. The message Started appears on the LCD and the Test LED lights. The port field (for example, P1 for Port 1) displays the port that is currently selected. You may see P1, P2, P3, or P4. If OtherTestActive appears on the LCD, another test is in progress.
Page 99: Pattern Test And Digital Loopback Test
COMSPHERE 392xPlus Modems Figure 3-8. Pattern Test and Digital Loopback Test To access Pattern from the Test branch, make the following selections: Press the 3-62 Figure 3-9. End-to-End Pattern Test Test: < Pattern key until Pattern appears. Select Pattern to start this test. November 1996 3920-A2-GN31-30...
Page 100 Select the appropriate port by pressing the corresponding F key. Press the ports into view. The Pick Test Port screen does not appear in Singleport mode. The message Started appears on the LCD and the Test LED lights. The port field (for example, P1 for Port 1) displays the port that is currently selected. You may see P1, P2, P3, or P4.
Page 101: Sub-Network Health And Status Branch
COMSPHERE 392xPlus Modems Sub-Network Health and Status Branch The Sub-Network Health and Status (SubHS) function is not available on multipoint tributary modems or with certain modulations (V.29, V.33, V.22bis, and V.27bis). The SubHS branch of the Top-Level menu allows you to display alarm conditions in downstream modems.
Page 102: Call Setup Branch
When you select SubHS, yyyyyy Select Nxt to scroll through the entries in the poll lists. To exit this function and return to the Top-Level menu, press the Call Setup Branch The Call Setup function is not available in TMp Control mode. For dial backup applications, the Call Setup branch of the Top-Level menu allows you to dial, disconnect, and answer telephone calls.
Page 103: Dial
COMSPHERE 392xPlus Modems To access the Call Setup branch from the Top-Level menu, make the following selections: Press the Dial For dial backup applications, Dial allows you to dial any telephone number stored in directory locations 1–24. Any telephone number dialed using the DCP must already exist in a directory location.
Page 104: Disconnect
The Call Setup status Off Hook appears during the connection process. If the connection is successful, the modem is online and one of the Normal Operation status messages (Table 3-3) appears on the LCD. If the connection is not successful, the LCD displays one of the Call Failure status messages (Table 3-3).
Page 105: Answer
COMSPHERE 392xPlus Modems Answer For dial backup applications, Answer allows the modem to go off-hook, generate an answer tone, and begin the handshaking process with the calling modem. Use the Answer function when the Auto-Answer Ring Count configuration option is disabled. (Refer to the Line Dialer section in Chapter 4.) For leased backup applications, Answer allows the modem to begin a “handshake”...
Page 106 Under normal backup conditions, when a problem occurs on the primary leased line, the modems establish a connection over the backup network. When this occurs, the Dial Standby function appears on the LCD. If you select Dial Standby, the modem switches back to the primary leased-line while still maintaining the backup connection. As a result, the Return_to_Dial function appears on the LCD instead of Dial Standby.
Page 107: Change Directory
COMSPHERE 392xPlus Modems Change Directory Change Directory allows you to enter or modify telephone numbers. The modem has nonvolatile memory locations that allow you to store up to 24 telephone numbers. Each directory location can accept up to 40 characters; this includes the telephone number and dial command modifiers. Any telephone number dialed using the DCP Dial command must appear in a directory location.
Page 108: Entering Telephone Numbers And Dial Command Modifiers Into Directory Locations
Entering Telephone Numbers and Dial Command Modifiers into Directory Locations The following example uses an empty directory location for describing how to enter a telephone number. If you want to change an existing telephone number in any of the 24 directory locations, follow the same procedures.
Page 109: Valid Dial Command Modifiers
COMSPHERE 392xPlus Modems Dial command modifiers are parameters entered in the dial command string which specify how, when, and what number to dial. The following is a list of parameters the 392x Plus modems recognize: — Tone (DTMF) dial. Any digit 0–9, *, or # can be dialed as tone. —...
Page 110: Talk/Data Branch
Select Nxt to display other directory locations. The status of a directory location can be: No Number Allowed Delayed Forbidden Delayed and Forbidden only appear in countries with specific dialing requirements. When a number is delayed, press the The delayed and forbidden conditions can be cleared by power cycling the modem. This is actually the only way to re-enable a forbidden number.
Page 111: Manual Dialing When The Remote Modem Is Configured For Auto-Answer
COMSPHERE 392xPlus Modems The following sections describe the uses of the Talk/Data function. Manual Dialing When the Remote Modem is Configured for Auto-Answer On the remote modem, the Line Current Disconnect configuration option (refer to the Line Dialer section in Chapter 4) must be set to Disable.
Page 112: Security Branch
Manual Dialing When the Remote Modem is Configured for Manual Answer On both modems, the Line Current Disconnect configuration option (refer to the Line Dialer section in Chapter 4) must be set to Disable. If you are originating a call using a telephone and the remote modem is configured for Manual Answer, perform the following procedure.
Page 113: Remote Branch
COMSPHERE 392xPlus Modems Remote Branch The Remote branch of the Top-Level menu allows you to control the remote modem’s DCP using the local modem’s DCP. This function allows you to change configuration options and control test functions in a remote modem. Any changes made to configuration options while using the Remote branch are not saved until you exit the Remote branch.
Page 114 Remote DCP access is accomplished using either the primary or secondary channel (if available) of the VF line. Using the primary channel gives a much faster response time due to the higher data rate, but it also interrupts data flow because primary data is stopped when Remote mode is active. Once Remote mode is terminated, the primary channel is automatically made available for data transmission.
Page 115 COMSPHERE 392xPlus Modems For Trellis Multipoint (TMp) modems (control or tributary), you must specify the remote access password of the modem that will be accessed by the Remote function. The following display does not appear in point-to-point modems. The password field (yyyyyyyy) displays the remote access password of the modem to be accessed by the Remote function.
Page 116 If the remote modem accepts the password and the entry is successful, the Top-Level menu of the remote modem appears on the local modem’s LCD. An indicating that what is displayed on your LCD is actually the Top-Level menu of the remote 392xPlus modem.
Page 117: Diagnostic Control Panel Access
Diagnostic Control Panel Access This page of the manual is self supporting and can be removed to prevent unwanted knowledge of the DCP security access selections. Use the DCP security access function to “lock” the DCP of any 392xPlus modem and prevent unwanted user access.
Page 118: Dcp Configuration
Overview Configure Branch Configuration Tables Multiport Mode Singleport Mode Overview After installing a 392xPlus modem, its software configuration options must be set using the diagnostic control panel (DCP). This chapter describes how to access and use the Configure branch of the Top-Level menu via the DCP. The Configure branch accesses the Edit Area which is a work space where you view and change the configuration options.
Page 119: Dcp Configuration Process
COMSPHERE 392xPlus Modems Factory is a read-only (unchangeable) configuration area containing six sets of predefined configuration options labeled Sync Leased, Async Leased, TMp (Trellis Multipoint), Async Dial, Sync Dial, and UNIX Dial. If Sync Leased or Async Leased is selected, you must choose either Answer or Originate mode.
Page 120: Configure Branch
Configure Branch The Configure branch of the Top-Level menu contains all of the modem’s configuration options which determine how the modem operates. These configuration options are accessed by scrolling down and across various levels of the Configure branch. Status PList Configure Ld EditArea frm: Activ (Operating)
Page 121: Editing And Saving A Configuration Option
COMSPHERE 392xPlus Modems The Configure branch consists of the following three levels: Ld EditArea frm. Allows the selection of the Active (Operating), Active (Saved), Customer 1, Customer 2, and Factory configuration areas. Choose Function. Allows you to make changes (Edit) to existing configuration options or write (Save) these changes to either the Active (Saved), Customer 1, or Customer 2.
Page 122 Select Sync_Leased. Select Answer. Select Edit. Scroll across the LCD and select the Misc configuration options group. 3920-A2-GN31-30 Ld Fact Preset: > Sync_Leased Choose Mode: Answer Originate Choose Function: Edit Save Edit StrapGroup: > DTE_Interface Edit StrapGroup Test Misc November 1996 DCP Configuration...
Page 123 COMSPHERE 392xPlus Modems Select Nxt until RemAccssPasswrd appears. Select the F2 ( ) key to increment password values. Press the Continue this sequence until you have entered the new password value. StrapsWhenDisc > No_Change RemAccssPasswrd: 00000000 RemAccssPasswrd: 10000000 RemAccssPasswrd: 10000000 key to move the cursor to the next position.
Page 124: Summary
To save the new password to a configuration area, make the following selections: Press the Select Save. Select a configuration area (Active (Saved), Customer 1, or Customer 2) to save the changes. Select the branch. Summary When using the DCP to edit configuration options, keep the following in mind: Nxt has two functions.
Page 125: Configuration Tables
COMSPHERE 392xPlus Modems Configuration Tables Each modem operates in either the Multiport or Singleport mode depending on the modem’s configuration (refer to 392xPlus Operational Modes in Chapter 1). The modem’s configuration options are arranged into six groups in the Multiport mode, and nine groups in the Singleport mode.
Page 126 Line Interface Dialer Dialer AutoAnswerRing# Dialer Type DialTone Detect Blind Dial Paus BusyTone Detect "," Pause Time NoAnswer Timout Fast Disconnect Line Crnt Disc Long Space Disc No Carrier Disc No Data Disc Auto Make Busy Copy From Port X MUX Mode –TDM/MSD –DTE Bridge...
Page 127: Dte Interface Configuration Options - Multiport Mode
COMSPHERE 392xPlus Modems DTE Interface — Multiport Mode The DTE Interface configuration options contain EIA-232-D (CCITT V.24) and asynchronous character format information essential for maintaining a connection and for transmitting data between the DTEs and the modem. Table 4-1 shows each DTE Interface configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is newly installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 128 DCP Configuration Table 4-1 (2 of 9) DTE Interface Configuration Options — Multiport Mode Bakup_TXClk_Src: Internal Nxt Internal RXC_Loop Port1 Port2 Port3 Port4 This configuration option only appears when Dual_Leased_Ln is configured for Enable. Backup Transmit Clock Source. Selects the clock reference source when operating in the Dual Leased Line Mode. This is a special mode in which one leased line is used to back up another.
Page 129 COMSPHERE 392xPlus Modems DTE Interface Configuration Options — Multiport Mode Port Rate Sub-Group (One for Each Port) NOTE: The Port Rate Sub Group configuration options are not available in Digital Bridge mode. Modem MSD: Disable Nxt/End Disable Enable This configuration option only appears when NetworkPosition is configured for Tributary. Modem Modem Sharing Device.
Page 130 DCP Configuration Table 4-1 (4 of 9) DTE Interface Configuration Options — Multiport Mode Rate at 7200 Nxt Disable 7200 4800 2400 1200 Rate at 7200. When the modem rate is 7200 bps the port rate will be as selected by this configuration option (Disable or 7200 to 1200).
Page 131 COMSPHERE 392xPlus Modems DTE Interface Configuration Options — Multiport Mode Async OverSpeed: 1.0 % End 1.0 % 2.3 % This configuration option only appears when Async/Sync Mode is configured for Async. Asynchronous Overspeed. Provides rate compensation for asynchronous DTEs that may be operating at a slightly higher rate than the asynchronous interface of the port.
Page 132 DCP Configuration Table 4-1 (6 of 9) DTE Interface Configuration Options — Multiport Mode RTS Action: Stndrd_RS232 Nxt Stndrd_RS232 Ignore Sim_Cntl_Car Request-to-Send Action. RTS is a signal from the DTE indicating the DTE has data to send. Standard RS232 – Allows the DTE to control RTS to the modem in normal EIA-232-D operation. RTS must be ON for the DTE to transmit to the modem.
Page 133 COMSPHERE 392xPlus Modems DTE Interface Configuration Options — Multiport Mode RTS/CTS Delay: 0msec Nxt 0msec 10msec 50msec 150msec 600msec 5 Request-to-Send/Clear-to-Send Delay. RTS/CTS Delay sets the delay time between the modem receiving RTS from the DTE and the modem sending CTS to the DTE. NOTE: This delay is only valid in applications when it is necessary to have a short delay between the time the DTE raises RTS and the time the modem presents CTS to allow the DTE to send data.
Page 134 DCP Configuration Table 4-1 (8 of 9) DTE Interface Configuration Options — Multiport Mode CT111 Control: Disable Nxt Disable Enable This configuration option does not appear when V.34 is enabled for a leased or dial line. CT111 Control. Used in conjunction with CT111 Rate Control. (Refer to the Mux Sub-Group section of this table.) Allows the DTE to control modem rate via Pin 23 of the EIA-232-D interface.
Page 135 COMSPHERE 392xPlus Modems DTE Interface Configuration Options — Multiport Mode Extend Main Ch.: Disable Nxt Disable Enable Primary data can only be extended one link. Extend Main Channel. Supports extended diagnostics. Specifies whether there is main (primary) channel connectivity between the modem’s DTE ports and the DTE ports of modems one level below (downstream) or above (upstream) in the diagnostic network.
Page 136: Line Dialer Configuration Options - Multiport Mode
Line Dialer — Multiport Mode The Line Dialer configuration options establish parameters used by the modem to answer or originate calls. Table 4-2 shows each Line Dialer configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 137 COMSPHERE 392xPlus Modems Line Dialer Configuration Options — Multiport Mode “,” Pause Time: 2sec Nxt 2sec 4sec 6sec 8sec 10sec 20sec Pause Time. Determines the number of seconds the modem pauses when it encounters a comma (,) in the dial command string.
Page 138 Line Dialer Configuration Options — Multiport Mode No Carrier Disc: 2sec Nxt 2sec Disable 5sec 10sec 20sec No Carrier Disconnect. If the modem no longer receives carrier from the remote modem, it disconnects the call. This configuration option determines how long carrier is OFF before the modem disconnects. Loss of carrier is one method of disconnecting a call.
Page 139: Dial Line Configuration Options - Multiport Mode
This configuration option is ignored unless Dial Line Rate is 4800(V32b). V.32bis Override. Activates the Paradyne Point-to-Point Diagnostic 2400 bps modulation. Allows the modem to use a non-standard, point-to-point modulation capable of secondary channel diagnostics while running at 2400 bps.
Page 140 DCP Configuration Table 4-3 (2 of 2) Dial Line Configuration Options — Multiport Mode Dial Tx Level: Permissv(–9) Nxt Permissv(–9) –10 –11 –12 –13 –14 –15 –16 –17 –18 –19 –20 –21 –22 –23 –24 –25 –26 –27 –28 –29 –30 –31 –32 Dial Transmit Level.
Page 141: Leased Line Configuration Options - Multiport Mode
COMSPHERE 392xPlus Modems Leased Line — Multiport Mode The Leased Line configuration options only appear when the Sync Leased factory preset template is selected. They are used to configure the modem for operation over leased lines. Table 4-4 shows each Leased Line configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 142 Nxt Disable 2400 This configuration option is ignored unless Leased-Line Rate is 4800(V32b). V.32bis Override. Activates the Paradyne Point-to-Point Diagnostic 2400 bps modulation. Allows the modem to use a non-standard, point-to-point modulation capable of secondary channel diagnostics while running at 2400 bps.
Page 143 COMSPHERE 392xPlus Modems Leased Line Configuration Options — Multiport Mode SpecialStandby: Disable Nxt Disable Enable This configuration option is only available if Automatic Dial Standby is configured for 15min, 1hr, 4hr or Test(2min) and Leased mode is configured for Originate mode, if Automatic Dial Standby is configured for Adv15min, Adv30min, Adv1hr or TestAdv(2min).
Page 144: Test Configuration Options - Multiport Mode
Test — Multiport The Test configuration option determines the duration of a test. Table 4-5 shows the Test configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 145: Miscellaneous Configuration Options - Multiport Mode
COMSPHERE 392xPlus Modems Misc — Multiport The Miscellaneous configuration options determine specifics for various functions, including network management parameters and remote modem access. Table 4-6 shows each Misc (Miscellaneous) configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 146 DCP Configuration Table 4-6 (2 of 3) Miscellaneous Configuration Options — Multiport Mode Dir#1_Callback: Disable Nxt Disable Enable Directory Location 1 Callback. This configuration option controls whether or not the modem’s single number callback function is used. Disable – Modem does not use the single number callback function. Enable –...
Page 147 COMSPHERE 392xPlus Modems Miscellaneous Configuration Options — Multiport Mode Diag Connection: Modem(DC) Nxt Modem(DC) NMS(CC) Disable This configuration option does not appear when the LeaseLine Rate is configured for TMp and NetworkPosition is configured for Tributary. Diagnostic Connection. Allows the configuration of the serial diagnostic port of the modem to be either a diagnostic channel that is connected to another modem (DC), or a control channel that is connected to a network management device (CC).
Page 148: Dte Interface
Singleport Mode In Singleport mode, the modem’s configuration options are arranged into nine groups based on functionality: DTE Interface (Table 4-7) DTE Dialer (Table 4-8) Line Dialer (Table 4-9) Dial Line (Table 4-10) Leased Line (Table 4-11) V.42/MNP/Buffer (Table 4-12) Test (Table 4-13) Misc (Table 4-14) Security (Chapter 6)
Page 149: Test
COMSPHERE 392xPlus Modems Interface Port 1 MUX Mode Async/Sync Mode Async DTE Rate Asyn #Data Bits Asyn Parity Bit Asyn #Stop Bits DTR Action DSR Control RTS Action RTS Antistream CTS Control RTS/CTS Delay LSD Control Tx Clock Source Bakup_TXClk_Src XTXC Clamps TXC CT111_Rate Cntl DTE_Rate=VF...
Page 150: Dte Interface Configuration Options - Singleport Mode
DTE Interface — Singleport Mode The DTE Interface configuration options contain EIA-232-D (CCITT V.24) and asynchronous character format information essential for maintaining a connection and for transmitting data between the DTE and the modem. Table 4-7 shows each DTE Interface configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 151 COMSPHERE 392xPlus Modems DTE Interface Configuration Options — Singleport Mode Asyn #Data Bits: 8 Nxt 8 7 9(DirectMde) 6(DirectMde) This configuration option only appears when Async/Sync Mode is configured for Async. Asynchronous Number of Data Bits. Determines if the asynchronous data length is composed of 6, 7, 8, or 9 data bits. This data length excludes start, parity, and stop bits.
Page 152 DTE Interface Configuration Options — Singleport Mode DTR Action: Ignore Nxt Ignore Stndrd_RS232 CntrlsOnHook CntrlsTxMute Data Terminal Ready Action. DTR is a signal from the DTE to the modem indicating that the DTE is connected and ready for operation. Ignore – Modem assumes DTR is always ON. This is used when the DTE does not provide DTR. Standard RS232 –...
Page 153 COMSPHERE 392xPlus Modems DTE Interface Configuration Options — Singleport Mode DSR Control: Stndrd_RS232 (Cont.) The AT command for Forced On is &S0. The AT command for Standard RS232 is &S1. The AT command for Wink When Disconnect is &S2. The AT command for Follows DTR is &S3. The AT command for On Early is &S4.
Page 154 DTE Interface Configuration Options — Singleport Mode CTS Control: Stndrd_RS232 Nxt Stndrd_RS232 Forced_On WinkWhenDisc Follows_DTR Follows_RTS Clear-to-Send Control. CTS is a signal from the modem to the DTE indicating that it can accept data from the DTE. Standard RS232 – In Synchronous mode, forces the state of CTS to follow the state of RTS in normal EIA-232-D operation.
Page 155 COMSPHERE 392xPlus Modems DTE Interface Configuration Options — Singleport Mode LSD Control: Stndrd_RS232 Nxt Stndrd_RS232 Forced_On WinkWhenDisc Follows_DTR Sim_Cntl_Car =DTR/DiscOFF Line Signal Detect Control. LSD is a signal indicating that the carrier signal is being received from the remote modem. It is normally turned OFF to the DTE when the power level of the received carrier signal drops below the carrier detect threshold.
Page 156 DCP Configuration Table 4-7 (7 of 8) DTE Interface Configuration Options — Singleport Mode Bakup_TXClk_Src: Internal Nxt Internal External RXC_Loop This configuration option only appears in customized installations in which the Dual_Leased_Ln is configured for Enable and Async/Sync Mode is Sync. Backup Transmit Clock Source.
Page 157 COMSPHERE 392xPlus Modems DTE Interface Configuration Options — Singleport Mode Extend Main Ch.: Disable Nxt Disable Enable Primary data can only be extended one link. Extend Main Channel. This configuration option supports extended diagnostics. Specifies whether there is main (primary) channel connectivity between the modem’s DTE ports and the DTE ports of modems one level below (downstream) or above (upstream) in the diagnostic network.
Page 158: Dte Dialer Configuration Options - Singleport Mode
DTE Dialer — Singleport Mode The DTE Dialer configuration options establish the DTE-to-modem protocol for call establishment and control. Table 4-8 shows each DTE Dialer configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 159 COMSPHERE 392xPlus Modems DTE Dialer Configuration Options — Singleport Mode AT Escape Char: 043 ASCI 043 ASCI This configuration option only appears when DTE Dialer Type is configured for AT. AT Escape Character. The escape sequence (+++) allows you to move from Data mode to Command mode. Use the ATO command to return to Data mode.
Page 160 DCP Configuration Table 4-8 (3 of 5) DTE Dialer Configuration Options — Singleport Mode Linefeed Char: 010 ASCI 010 ASCI This configuration option only appears when DTE Dialer Type is configured for AT. Line Feed Character. Sets the character used to perform a line feed in Command mode for responses from the modem. The AT command is S-Register S4= n , where n is a value from 0 to 127.
Page 161 COMSPHERE 392xPlus Modems DTE Dialer Configuration Options — Singleport Mode ResultCode Form: Words Nxt Words Numbers (1) Numbers (2) This configuration option only appears when DTE Dialer Type is configured for AT. Result Codes Format. Controls whether or not result codes appear as words or as numeric codes. Some DTEs do not recognize Result Codes as words;...
Page 162 DCP Configuration Table 4-8 (5 of 5) DTE Dialer Configuration Options — Singleport Mode V25bis IdleFill: Mark Nxt Mark Flag This configuration option only appears when DTE Dialer is configured for V.25bis HDLC. V.25bis Idle Fill. Determines whether a mark or flag is used as an idle fill character for the DTE. The modem responds to the DTE using the same idle fill.
Page 163: Line Dialer Configuration Options - Singleport Mode
COMSPHERE 392xPlus Modems Line Dialer — Singleport Mode The Line Dialer configuration options establish parameters used by the modem to answer or originate calls. Table 4-9 shows each Line Dialer configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 164 Line Dialer Configuration Options — Singleport Mode BusyTone Detect: Enable Nxt Enable Disable Busy Tone Detect. Sets the modem to monitor for Busy Tone (Enable) or ignore Busy Tone (Disable). NOTE: This configuration option is normally enabled; however, if the modem receives false busy tones, this configuration option can be disabled and the modem ignores all busy tones.
Page 165 COMSPHERE 392xPlus Modems Line Dialer Configuration Options — Singleport Mode Long Space Disc: Enable Nxt Enable Disable Long Space Disconnect. Determines the modem’s response to a continuous spacing condition sent from the remote modem before it goes on-hook. Issuing a long space is one method of disconnecting a call. Enable –...
Page 166 Line Dialer Configuration Options — Singleport Mode Auto Make Busy: Disable Nxt Disable Enable This option is only valid on Model 3921 Plu s. Automatic Make Busy. Forces the modem to go off-hook under the following conditions: if a local analog loopback is performed, a self-test is performed, or if the modem is switched to the service line.
Page 167: Dial Line Configuration Options - Singleport Mode
COMSPHERE 392xPlus Modems Dial Line — Singleport Mode The Dial Line configuration options are used to configure the modem for operation over dial lines. Table 4-10 shows each Dial Line configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 168 This configuration option is ignored unless Dial Line Rate is 4800(V32b). V.32bis Override. Activates the Paradyne Point-to-Point Diagnostic 2400 bps modulation. Allows the modem to use a non-standard, point-to-point modulation capable of secondary channel diagnostics while running at 2400 bps.
Page 169 COMSPHERE 392xPlus Modems Dial Line Configuration Options — Singleport Mode V22b Guard Tone: Disable Nxt Disable 550Hz 1800Hz This configuration option only appears when Dial Line Rate is configured for V.22bis or V.22 data rate, or when Automode is configured for Enable. V.22bis Guard Tone.
Page 170: Leased Line Configuration Options- Singleport Mode
Leased Line — Singleport Mode The Leased Line configuration options only appear when the Sync Leased factory preset template is selected. They are used to configure the modem for operation over leased lines. Table 4-11 shows each Leased Line configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 171 This configuration option is ignored unless Leased-Line Rate is 4800(V32b). V.32bis 4800 Override. Activates the Paradyne Point-to-Point Diagnostic 2400 bps modulation. Allows the modem to use a non-standard, point-to-point modulation capable of secondary channel diagnostics while running at 2400 bps.
Page 172 Leased Line Configuration Options— Singleport Mode Leased Tx Level: 0 Nxt 0 –1 –2 –3 –4 – 5 – 6 –7 – 8 – 9 –10 –11 –12 –13 –14 –15 Leased Transmit Level. Selects the modem’s transmit power level over leased lines. The transmit output level can be selected in 1 dBm decrements from 0 dBm to –15 dBm.
Page 173 COMSPHERE 392xPlus Modems Leased Line Configuration Options— Singleport Mode SpecialStandby: Disable Nxt Disable Enable This configuration option only appears when Automatic Dial Standby is configured for 15min, 1hr, 4hr or Test(2min) and Leased mode is configured for Originate mode, when Automatic Dial Standby is configured for Adv15min, Adv30min, Adv1hr or TestAdv(2min). Special Standby.
Page 174 Leased Line Configuration Options— Singleport Mode V29 Link Config: PointToPoint Nxt PointToPoint Multipoint This configuration option only appears when Leased-Line Rate is configured for V29. V.29 Link Configuration. Selects point-to-point or multipoint operation. NOTE: Remote mode and the Cloning function are not available when configured for V.29 multipoint. The AT command is S-Register S94= n , where n is 0 for PointToPoint and 1 for Multipoint.
Page 175: V.42/Mnp/Buffer Configuration Options - Singleport Mode
COMSPHERE 392xPlus Modems V.42/MNP/Buffer — Singleport Mode V.42/MNP/Buffer configuration options determine the type of error correction and flow control used by the modems and attached DTEs. Some choices within this group may not appear depending upon how previous configuration options have been selected. If the Async/Sync Mode configuration option is set for synchronous operation (refer to the DTE Interface configuration options group), then the V.42/MNP/Buffer group does not appear on the LCD.
Page 176 DCP Configuration Table 4-12 (2 of 6) V.42/MNP/Buffer Configuration Options — Singleport Mode Err Contrl Mode: V.42/MNPorBfr (Cont.) The AT command for Buffer Mode is \N0. The AT command for Direct Mode is \N1. The AT command for MNP or Disconnect is \N2. The AT command for MNP or Buffer is \N3.
Page 177 COMSPHERE 392xPlus Modems V.42/MNP/Buffer Configuration Options — Singleport Mode EC Fallbck Char: 013 ASCI 013 ASCI This configuration option only appears when Async/Sync Mode is configured for Async, and EC Negotiate Buffer is not configured for Disable. Error Control Fallback Character. This configuration option allows you to enter the ASCII value of the error control fallback character.
Page 178 DCP Configuration Table 4-12 (4 of 6) V.42/MNP/Buffer Configuration Options — Singleport Mode XON/XOFF Psthru: Disable Nxt Disable Enable This configuration option only appears when Async/Sync Mode is configured for Async, and Flow Control of Modem is configured for XON/XOFF Psthru. XON/XOFF Passthrough.
Page 179 COMSPHERE 392xPlus Modems V.42/MNP/Buffer Configuration Options — Singleport Mode Send Break Cntl: Data_First End Data_First Break_First This configuration option only appears when Async/Sync Mode is configured for Async, and Error Control Mode is not configured for DirectMode. Send Break Control. Determines what is sent from the modem first, data or break if a break sequence is sent from the DTE.
Page 180 DCP Configuration Table 4-12 (6 of 6) V.42/MNP/Buffer Configuration Options — Singleport Mode CellularEnhance: Disable Nxt Disable Enable This configuration option only appears when Async/Sync Mode is configured for Async, and Error Control Mode is configured for V42/MNPorBfr, V42/MNPorDsc, LAPM_or_Disc, or LAPM_or_Bufr. Cellular Enhancement.
Page 181: Test Configuration Options - Singleport Mode
COMSPHERE 392xPlus Modems Test — Singleport Mode The Test configuration options determine specifics, such as the duration of a test, for the various diagnostic tests available to the modem. Table 4-13 shows each Test configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 182 DCP Configuration Table 4-13 (2 of 2) Test Configuration Options — Singleport Mode V54 Address: Disable Nxt Disable (Address Values) V.54 Address. Determines which remote 392x Plus modem is placed into a remote loopback test. This test can be either a remote digital loopback or local analog loopback.
Page 183: Miscellaneous Configuration Options - Singleport Mode
COMSPHERE 392xPlus Modems Misc — Singleport Mode The Miscellaneous configuration options determine specifics for various functions, including network management parameters and remote modem access. Table 4-14 shows each Misc (Miscellaneous) configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line.
Page 184 DCP Configuration Table 4-14 (2 of 3) Miscellaneous Configuration Options — Singleport Mode Access frm Remt: Enable Nxt Enable Disable Access from Remote. Determines if your modem’s DCP can be accessed by a remote modem via the VF line. CAUTION: If this configuration option is disabled, the modem cannot be accessed by another modem. Enable –...
Page 185: Security Configuration Options
COMSPHERE 392xPlus Modems Miscellaneous Configuration Options — Singleport Mode NetworkPosition: Tributary End Tributary Control Network Position Identification. Each modem must be identified either as a control modem or a tributary modem. NOTE: Changes to this configuration option will cause the modem to reset. NOTE: This configuration option is only applicable for leased-line network management applications.
Page 186: Overview
AT Command Set and S-Registers Overview Operating Modes Command Guidelines AT Command List S-Register List Overview In Singleport mode, the AT command set provides an alternative method to the modem’s DCP for entering commands that control the operation and configuration of the 392xPlus modems. This chapter discusses guidelines necessary to operate AT commands as well as listing the modifiers for all AT commands supported by the 392xPlus modems.
Page 187: Escape Sequence And Escape Guard Time
COMSPHERE 392xPlus Modems Escape Sequence and Escape Guard Time The escape sequence is only issued when the modem is online and in Data mode. The 392xPlus modems use three consecutive plus ( + ) characters as the escape sequence. (To change this value, refer to S-Register S2 discussed later in Table 5-3 in the S-Register Format section.) To prevent the modem from interpreting an embedded + + + in data as an escape sequence, the Escape Guard Time value determines the length of the pause before and after the escape sequence...
Page 188: Result Codes
Result Codes Table 5-1 lists all valid result codes for the 392xPlus modems. Numbers Numbers CONNECT RING NO CARRIER ERROR CONNECT 1200* NO DIALTONE* BUSY* NO ANSWER* CONNECT 2400* CONNECT 4800* CONNECT 9600* CONNECT 12000* CONNECT 14400* CONNECT 19200* CONNECT 7200* CONNECT 16800* CONNECT 300* CONNECT 2400/ EC****...
Page 189 COMSPHERE 392xPlus Modems Numbers Numbers CONNECT 9600/ EC**** CONNECT 12000/ EC**** CONNECT 14400/ EC**** CONNECT 16800/ EC**** CONNECT 7200/ EC**** CONNECT 1200/ EC*** CONNECT 38400** CONNECT 19200/ EC**** CONNECT 57600** CONNECT 21600* CONNECT 24000* CONNECT 26400* CONNECT 28800* CONNECT 31200* CONNECT 33600* CONNECT 21600/ EC**** CONNECT 24000/ EC****...
Page 190: At Command List
AT Command List AT commands are issued from an asynchronous DTE, such as a PC, and control the modem’s operation and software configuration. AT commands are only applicable when the DTE Dialer Type configuration option is set for AT. (Refer to the &Mn and &Qn commands.) Table 5-2 lists all AT commands supported by the 392xPlus modems.
Page 191: 392Xplus At Commands
COMSPHERE 392xPlus Modems Command Repeat Last Command. Reexecutes last command string. (Not to be preceded with AT or followed by pressing the Return key.) Answer Mode. Goes off-hook and attempts to establish a connection without waiting for a ring. Dial. Begins the dialing sequence. The dial string n (modifiers and telephone number) is entered after the D command.
Page 192 Command DS= n Dial Stored Number. Dials the number stored in Location n (1–24). (To store a telephone number, refer to the & Zn=x command.) Command Character Echo. Disables echo to the DTE. Enables echo to the DTE. Hook Switch Control. Modem goes on-hook.
Page 193 COMSPHERE 392xPlus Modems Command Extended Result Code, Dial Tone Detect, and Busy Tone Detect Configuration Options. Extended Result Code: Enable Disable Add/EC Add/V42,MNP Use DTE Rate Dial Tone Detect: Enable Enable Disable NOTE: It may not be possible to disable Dial Tone Detect in some countries. Busy Tone Detect: Enable Disable...
Page 194 Command &C n LSD Control. &C0 Forced On. LSD ON at all times. &C1 Standard RS232. LSD is ON when the remote modem’s carrier signal is detected. LSD is OFF when carrier signal is not detected. &C2 Wink When Disconnect. LSD normally forced ON, turns OFF for approximately one second upon disconnecting.
Page 195 COMSPHERE 392xPlus Modems Command &G n V.22bis Guard Tone. &G0 Disable. &G1 550 Hz. &G2 1800 Hz. NOTE: The V.22bis Guard Tone cannot be disabled in some countries. &I n Dial Transmit Level. The AT command is &I n , where n is 0 for –...
Page 196 Command &M n and Async/Sync Mode and DTE Dialer Type. &Q n &M0, &Q0 Modem operates in Asynchronous mode using AT Command protocol. &M1, &Q1 Modem operates in Synchronous mode using AT Command protocol. &M2, &Q2 Modem operates in Synchronous mode and dials telephone number stored in directory location 1 when DTR signal turns OFF and then &M3, &Q3 Modem operates in Synchronous mode using AT Command...
Page 197 COMSPHERE 392xPlus Modems Command &T n Tests. &T0 Abort. Stops any test in progress. &T1 Local Analog Loop. &T2 Pattern. Transmits and receives a 511 Bit Error Rate Test (BERT). &T3 Local Digital Loopback test. &T4 Enables Receive Remote Loopback Response configuration option. &T5 Disables Receive Remote Loopback Response configuration option.
Page 198 Command &Z n=x Store Telephone Numbers. Modem saves the telephone numbers and dial command modifiers (if any) entered for x (up to 40 characters in length) in Directory Location n (1–24). For example, the command AT&Z1 = 5551234 stores the telephone number 555-1234 into directory location 1. To clear a telephone number from a memory location, issue the &Z n = x command without entering a telephone number.
Page 199 COMSPHERE 392xPlus Modems Command \N n Error Control Mode. Buffer Mode. Direct Mode. MNP or Disconnect. MNP or Buffer. V.42/MNP or Disconnect. V.42/MNP or Buffer. LAPM or Disconnect. LAPM or Buffer. \Q n Flow Control of DTE, Flow Control of Modem. \T n No Data Disconnect Timer.
Page 200: S-Register List
S-Register List S-Registers affect the operating parameters of the 392xPlus modems. S-Registers are only applicable when the DTE Dialer Type configuration option is set for AT. (Refer to the &Mn and &Qn commands.) Table 5-3 lists all S-Registers supported by the 392xPlus modems. The first column lists the S-Register.
Page 201: 392Xplus S-Registers
COMSPHERE 392xPlus Modems S-Register Auto-Answer Ring Number will count before automatically answering a call. Enter zero (0) if you do not want the modem to automatically answer any calls. Otherwise, enter a value from 1–255 for the number of rings to count before answering.
Page 202 S-Register Escape Guard Time. Register sets the value (in 20-millisecond increments) for the required pause before and after the escape sequence is issued. The guard time prevents the modem from interpreting data as the escape sequence characters. Enter a value from 0–255 in 20-millisecond increments. The factory setting of 50 equals 1000 milliseconds or one second.
Page 203 COMSPHERE 392xPlus Modems S-Register Dial-Line Rate. Register determines the modem’s data rate and modulation scheme for operation on dial lines. Register has the following values: 1 = 14,400 (V.32bis) 2 = 12,000(V.32bis) 3 = 9600 (V.32bis) 4 = 7200 (V.32bis) 5 = 4800 (V.32bis) 6 = 2400 (V.22bis) 7 = 1200 (V.22)
Page 204 S-Register Leased-Line Rate. Register determines the modem’s data rate and modulation scheme for operation on either 2-wire or 4-wire leased lines in either Answer or Originate mode. Register has the following values: 1 = 14,400 (V.32bis) 2 = 12,000 (V.32bis) 3 = 9600 (V.32) 4 = 7200 (V.32bis) 5 = 4800(V.32)
Page 205 COMSPHERE 392xPlus Modems S-Register Auto Dial Backup. Register determines if the modem performs an automatic dial backup if the leased lines fail. Register has the following values: 0 = Disable 1 = Enable The factory setting is Disable. Auto Dial Standby. Register determines if the modem performs an automatic dial standby if in Dial Backup mode.
Page 206 S-Register DTE LL (CT141). Register determines if the modem performs a local analog loopback if it receives a CT141 signal from the DTE. Register has the following values: 0 = Disable 1 = Enable The factory setting is Disable. V.54 Address. Identifies the address of the modem to be placed in a loopback test.
Page 207 COMSPHERE 392xPlus Modems S-Register CT111 Rate Control. Register determines if CT111 Rate is disabled, set for Fallback 1 or Fallback 2. CT111 Rate allows the DTE to control modem rate via Pin 23 of the EIA-232-D interface. This configuration option determines the effect of the DTE Rate Control signal.
Page 208 S-Register NMS Call Messages. Register determines if the modem sends information regarding status (Call Progress) and/or sends summarized call statistics (Call Connect) to the 6700 Series Network Management System (NMS). Register has the following values: 0 = Call Connect & Progress 1 = Disable 2 = Call Connect Only 3 = Call Progress Only...
Page 209 COMSPHERE 392xPlus Modems S-Register Network Position Identification. Register identifies each modem as either a control or tributary modem. Register has the following values: 0 = Tributary 1 = Control The factory setting is Tributary. Network Management Address. Register determines the modem’s network address.
Page 210 S-Register Fast Disconnect. Register allows the modem to disconnect immediately after receiving a disconnect command from a local DTE or its own diagnostic control panel. Register has the following values: 0 = Disable 1 = Enable The factory setting is Disable. Straps When Disconnected.
Page 211 COMSPHERE 392xPlus Modems S-Register Cellular Enhancement. Register allows the modem to use non-standard techniques to enhance V.42 operation for cellular applications. It is still compatible, however, with modems which do not have the cellular enhancement implemented or enabled. Register has the following values: 0 = Disable 1 = Enable The factory setting is Disable.
Page 212 S-Register Trellis Multipoint (TMp) Tx Preemphasis. Provides amplification for frequencies above the carrier frequency to compensate for high frequency line attenuation. Register has the following values: 0 = Enable 1 = Disable The factory setting is Enable. Reduced Asynchronous Buffer Size. Register limits the modem’s buffer size to a maximum of 20 characters.
Page 213 Chapter 6, Dial Access Security, is not available for viewing online because it contains security-sensitive information. Dial Access Security information is available in the COMSPHERE 392xPlus Modems Models 3920Plus and 3921Plus Installation and Operation Manual, Document No. 3920-A2-GN31-30. To order product documentation contact your sales representative.
Page 214: Menu Tree
Menu Tree Overview ........... . Overview Pages A-2 and A-3 provide a menu tree for the 392xPlus modems.
Page 215 COMSPHERE 392xPlus Modems “Status” Status Port Select (Multiport Mode) DeviceHS Identity V.34 Major Ser# TxRate RxRate Minor Mod# SymbolRate Status FRev TxLevel Dial HPt# AsymRate Thresh FPt# Security Country Port1 Display Clear Port2 Port3 Port4 SigQual RcvLevel Sig/Noise NrEchLvl FarEchLv FarEchDel EchoFreqOff Phase Hts...
Page 216 from previous page Control SubHS Test Dial Self Rem_Digital_Loop Abort Loc_Analog_Loop Data_Stream Speaker Reset EIA_LEDs 3920-A2-GN31-30 Call_Setup Tlk/Data (Dial Backup only) Answer Change_Directory Dial_Standby Disconnect Return_to_Dial Directory Locations 1 – 24 Pattern Loc_Digital_Loop Set_Access_Ctrl (Admin Password?) EditPassWdTable (3921 Plus only) Make_Busy Download_Code (DownloadSoftware)
Page 217: Modem Health
Overview Overview This appendix points out basic problems that can occur when operating a 392xPlus modem. Use Tables B-1 through B-6 to check out these problems. If you are having data communication difficulties, such as periodic character loss, random errors, or constant format errors, use the loopback tests described in the Test section of Chapter 4.
Page 218: Leased-Line Operation
COMSPHERE 392xPlus Modems Symptom The modems do not train-up on leased lines. Symptom The dial backup line is present, but the modems cannot connect. The modem does not switch back to leased-line operation. Table B-2 Leased-Line Operation Action Verify that the correct cabling is used for your application. Refer to Chapter 2, Modem Installation .
Page 219: Modem - Dte Connection
Symptom The modem does not accept or echo back AT commands. 3920-A2-GN31-30 Table B-4 Modem — DTE Connection Action Verify that the cable between the Async port of the DTE and the modem is a standard RS-232 cable. (Null modem cables, also known as crossover cables, do not work in this application.) Verify that the Command Character Echo configuration option is enabled.
Page 220: Modem - Vf Connection
COMSPHERE 392xPlus Modems Symptom The modem does not receive a dial tone. The modem does not go off-hook and answer an incoming call. The modem goes off-hook, answers, but does not connect. The Originate Mode does not function properly. The modem does not go off-hook and begin dialing.
Page 221: B-6 Online Operation
Symptom Intermittent disconnects, high error rates, or excessive retransmissions occur. The modem establishes and then disconnects the call. High error rates occur when running a local loopback or self-test. Symptom The data is scrambled. Data is missing during a transfer. Symptom The MUX configuration option does not appear under DTE Interface.
Page 222 Overview EIA-232-D Pin Assignments VF Connector Pin Assignments Auxiliary Cables Not Supplied Overview This appendix lists EIA-232-D and VF TELCO pin assignments and provides information about auxiliary cables which are not supplied. 3920-A2-GN31-30 Pin Assignments ........... . .
Page 223 COMSPHERE 392xPlus Modems EIA-232-D Pin Assignments Table C-1 lists the EIA-232-D pin assignments for the modem. Name Circuit — +12V — –12V — — — CT112 — — — — — — CT141 CT140 CT111 XTXC TEST Table C-1 EIA-232-D Pin Assignments Signal CCITT Source...
Page 224: C-1 Vf Pin Orientation
VF Connector Pin Assignments Table C-2 lists the connector pin assignments for Model 3920Plus modular jacks as well as the pin assignments for the TELCO jacks. (See Figure C-1.) Leased 4-Wire: TX 2-Wire: TX/RX 4-Wire: TX 2-Wire: TX/RX 4-Wire: RX...
Page 225: C-2 Wiring Diagram — "Y" Cable For External Telephone
COMSPHERE 392xPlus Modems Auxiliary Cables Not Supplied To add an external telephone to your modem, use an external “Y” cable to connect the phone line to both the modem and the telephone (Figure C-2). Figure C-2. Wiring Diagram — “Y” Cable for External Telephone November 1996 3920-A2-GN31-30...
Page 226: C-3 Wiring Diagram — 8-Position To 6-Position Crossover Cable
For 2-wire leased-line connections to a JM8 network interface, use an 8-position to 6-position crossover cable (Figure C-3) according to the following FCC requirements: “The RJ series of jacks should not be used for connecting data equipment to nonswitched private line networks — specifically, the service equivalents of the pre-divestiture Series 3002 (Category II, Tariff #260) service.
Page 227: C-4 Wiring Diagram — 25-Pin Crossover Cable
COMSPHERE 392xPlus Modems To connect a Model 3920Plus port to another modem’s EIA-232-D interface, use a 25-pin crossover cable (Figure C-4). 25-POSITION PLUG PIN NO. CT140 XTXC CT142 (TEST) Figure C-4. Wiring Diagram — 25-Pin Crossover Cable 25-POSITION PLUG PIN NO.
Page 228 Command and Responses Overview Call Request Commands Call Response Call Answer Commands Program Normal (PRN) Request List of Delayed Numbers (RLD) Request List of Forbidden Numbers (RLF) Request List of Stored Numbers (RLN) List Delayed Numbers Response (LSD) List Forbidden Numbers Response (LSF List Stored Number Response (LSN) Command Response Overview...
Page 229: Call Request Commands
COMSPHERE 392xPlus Modems Call Request Commands Call Request commands are issued from the DTE to the modem and are responsible for initiating dial calls. Call Request commands include Call Request with Number Provided (CRN) and Call Request with Stored Memory Address Provided (CRS). Call Request with Number Provided (CRN) The CRN command dials the telephone number entered from the DTE.
Page 230: Call Answer Commands
ET is similar to the Call Failure Messages Busy Signal and Trunk Busy and the result code BUSY. NS is similar to the Common Operational Message Invalid Number and the result code ERROR. CB is similar to the Call Failure Messages Dial Line in Use and No Dial-Test and the result code ERROR.
Page 231: Program Normal (Prn)
COMSPHERE 392xPlus Modems Connect Incoming Call (CIC) The CIC command forces the modem to cancel any DIC commands and answer an incoming call. This command is only valid when the DTE issues a DIC command. CIC must be issued within 10 seconds after sending a DIC. CIC is similar to the ATA command. The CIC command format is CIC.
Page 232: Request List Of Stored Numbers (Rln)
Request List of Stored Numbers (RLN) The Request List of Stored Numbers (RLN) command displays telephone numbers stored in the modem’s directory location. If the RLN command is entered without specifying a directory location, then all directory locations and telephone numbers appear. If a directory location is entered, then only that telephone number appears.
Page 233: Command Response
COMSPHERE 392xPlus Modems Command Response A Command Response indicates that the command entered was a valid or invalid entry. Command Response includes Valid (VAL) and Invalid (INV). Valid (VAL) The VAL response indicates that the modem has accepted the V.25bis command issued by the DTE.
Page 234 V.25bis Command Request to List Delayed Numbers Request to List Forbidden Numbers Request to List Stored Numbers List Delayed Numbers List Forbidden Numbers List Stored Numbers Table D-2 lists V.25bis response messages supported by the 392xPlus modems. V.25bis Command Call Failure Indication Call Connecting Indication List Stored Number Valid Command...
Page 235: E. Ascii Character Table
Overview Overview Table E-1 in this appendix provides the ASCII character table. Hexadecimal ASCII Value 3920-A2-GN31-30 ASCII Character Table ........... . Table E-1 (1 of 4) ASCII Characters...
Page 236 COMSPHERE 392xPlus Modems Hexadecimal ASCII Value Table E-1 (2 of 4) ASCII Characters Decimal Control ASCII Value Character November 1996 CTRL-W CTRL-X CTRL-Y CTRL-Z CTRL-[ CTRL-/ CTRL-] CTRL-|Ax CTRL-_ spacebar “ & ’ < 3920-A2-GN31-30...
Page 237 Hexadecimal ASCII Value 3920-A2-GN31-30 Table E-1 (3 of 4) ASCII Characters Decimal Control ASCII Value Character November 1996 ASCII Character Table > ‘...
Page 238 COMSPHERE 392xPlus Modems Hexadecimal ASCII Value Table E-1 (4 of 4) ASCII Characters Decimal Control ASCII Value Character November 1996 delete 3920-A2-GN31-30...
Page 239 Default Configuration Options Overview Overview Table F-1 lists the six sets of default (preset) configuration options, labeled Sync Leased, Async Leased, TMp (Trellis Multipoint), Async Dial, Sync Dial, and UNIX Dial. These six sets contain the most commonly used configuration options for modems installed into these hardware environments.
Page 240 COMSPHERE 392xPlus Modems Sync Leased Configuration Default Option Settings DTE Interface (Multiport mode) Sub-group MUX Mode TDM/MSD TDM/MSD Tx Clock Source Internal Internal Backup Tx Clock Internal Internal Source CT111 Rate Disable Disable Control MSD Port Host Host Control Port Rate Sub-group Modem MSD Disable...
Page 241 Sync Leased Configuration Default Option Settings Port Rate Sub-group (Cont’d) Rate at 14.4 K 14400 Port1 or 14400 Port1 or Disable (Ports 2, Disable (Ports 2, 3, 4) 3, 4) Rate at 12.0 K 12000 Port1 or 12000 Port1 or Disable (Ports 2, Disable (Ports 2, 3, 4)
Page 242 COMSPHERE 392xPlus Modems Sync Leased Configuration Default Option Settings Port EIA Sub-group (Cont’d) CTS Control Standard RS232 Standard RS232 RTS/CTS Delay LSD Control Standard RS232 Standard RS232 XTXC Clamps Enable Enable Disable Disable CT111 Control Rcv Remote Loop Enable Enable DTE RL (CT140) Disable Disable...
Page 243 Sync Leased Configuration Default Option Settings DTE Interface (Singleport mode Cont’d) Tx Clock Source Internal Internal † Backup Tx Clock Internal Internal † Source XTXC Clamps Enable Enable CT111 Rate Control Disable Disable DTE Rate = VF Disable †† Disable Extend Main Ch.
Page 244 COMSPHERE 392xPlus Modems Sync Leased Configuration Default Option Settings DTE Dialer (Cont’d) Result Codes Words Words Format AT Command Normal Normal Mode V.25bis ASCII ASCII Coding V.25bis Idle Mark Mark Fill V.25bis New Line CR+LF CR+LF Char Line Dialer Auto Answer Ring Count Dialer Type Tone...
Page 245 Sync Leased Configuration Default Option Settings Dial Line Dial Modulation V.34 V.34 Dial Line Rate 28800 (V34) 28800 (V34) Automode Enable Enable Autorate Enable Enable V32bis Override Disable Disable Dial Tx Level Permissive Permissive (–9 dBm) (–9 dBm) V.22bis Guard Disable Disable Tone...
Page 246 COMSPHERE 392xPlus Modems Sync Leased Configuration Default Option Settings Lease Line (Cont’d) Short Short V.27bis Train V.29 Train On Disable Disable Data Enable Enable V.29 Retrain V.29 Link Point-To-Point Point-To-Point Configuration TMp Train Time TMp Tx Enable Enable Preemphasis Disable Disable LeaseLookback Dual Lease Line...
Page 247 Sync Leased Configuration Default Option Settings V.42 / MNP / Buffer †† Error Control Mode Direct Direct V.42bis Enable Enable Compression MNP5 Enable Enable Compression EC Negotiate Disable Disable Buffer EC Fallback Character Flow Control of CTS to DTE CTS to DTE Flow Control of RTS to Modem RTS to Modem...
Page 248 COMSPHERE 392xPlus Modems Sync Leased Configuration Default Option Settings Test DTE RL Disable Disable (CT140) DTE LL Disable Disable (CT141) Test Timeout Disable Disable Receive Remote Enable Enable Loopback V.54 Address Disable Disable V.54 Device Peripheral Peripheral Type Misc Straps When No Change No Change Disconnect...
Page 249 Sync Leased Configuration Default Option Settings Security Entry Wait Time 20 sec 20 sec VF Prompt Type 2nd Dial Tone 2nd Dial Tone DTE Password Tries DTE Password Termination Character DTE Password Backspace Character Get User Id Disable Disable Reporting Answer Security No Answer No Answer...
Page 250 Sample Configurations Overview Point-to-Point Extended Point-to-Point Extended Multipoint Point-to-Point with Automatic Dial Backup Point-to-Point with Network Management Carrier with Network Management Extended Diagnostics Digital Bridging Point-to-Point MSD Multipoint MSD Overview This appendix provides diagrams of sample configurations for the 392xPlus modems. Following each diagram, the appropriate configuration options, cables, and sample line rates are listed.
Page 251: Point-To-Point
4800 4800 Cable 1 Cable 1 Cable 1 Cable 1 Figure G-1. Sample Configuration — Point-to-Point Configuration Options 3920Plus A 3920Plus B 28800(V34) Leased 3920 Plus Cable 2 Cable 2 Use Sync Leased (Answer) default configuration options with the following...
Page 252: Cables
Sample Port Rate Table Cables Cable 1 Cable 2 3920-A2-GN31-30 Port Port 1 Port 2 Port 3 Rate 28.8K 9600 9600 4800 24.0K 9600 Disable 4800 19.2K 9600 Disable 4800 16.8K 9600 Disable Disable 14.4K 9600 Disable Disable 12.0K Disable Disable Disable 9.6K...
Page 253: Extended Point-To-Point
9600 3920 Plus (Sync) 4800 4800 Cable 1 Cable 1 Cable 1 Cable 1 Figure G-2. Sample Configuration — Extended Point-to-Point Configuration Options 3920Plus A 3920Plus B 28800(V34) Leased 3920 Plus Cable 2 Cable 2 4800(V32b) Leased 3910 Cable 2...
Page 254: Cables
3910 A 3910 B Sample Port Rate Table Cables Cable 1 Cable 2 Cable 3 3920-A2-GN31-30 Use Sync Leased (Answer) default configuration options with the following exceptions: TX Clock Source Set to External. LeasedLine Rate Set to 4800(V32b). Autorate (Leased Line) Set to Disable. Use Sync Leased (Originate) default configuration options with the following exceptions: TX Clock Source...
Page 255: Extended Multipoint
COMSPHERE 392xPlus Modems Extended Multipoint Figure G-3 shows a sample configuration for extended multipoint applications. 28800(V34) 9600 9600 3920 Plus (Sync) 4800 4800 Cable 1 Cable 1 Cable 1 Cable 1 * This FEP Port is Running the Multipoint Application Figure G-3.
Page 256: Configuration Options
Configuration Options 3920Plus A 3920Plus B 3910 A 3910 B 3910 C Sample Port Rate Table 3920-A2-GN31-30 Use Sync Leased (Answer) default configuration options with the following exception: Rate Refer to Sample Port Rate Table in this section. Use Sync Leased (Originate) default configuration options with the following...
Page 257: Cables
COMSPHERE 392xPlus Modems Cables Cable 1 Cable 2 Cable 3 Point-to-Point with Automatic Dial Backup Figure G-4 shows a sample configuration for point-to-point applications with automatic dial backup. 9600 (Sync) 9600 28800(V34) (Sync) 4800 3920 Plus (Sync) 4800 (Sync) Cable 1 Figure G-4.
Page 258: Configuration Options
Configuration Options 3920Plus A 3920Plus B Sample Port Rate Table Cables Cable 1 Cable 2 Cable 4 3920-A2-GN31-30 Use Sync Leased (Answer) default configuration options with the following exception: Auto Dial Back Set to Enable. Rate Refer to Sample Port Rate Table in this section.
Page 259: Point-To-Point With Network Management
Cable 1 Cable 1 Cable 1 Cable 5 (6700 6800) Adapter (002-0025-0031) Figure G-5. Sample Configuration — Point-to-Point with Network Management Configuration Options 3920Plus A 3920Plus B G-10 28800(V34) Leased 3920 Plus Cable 2 Cable 2 Hubbing Device Use Sync Leased (Answer) default configuration options with the following...
Page 260: Cables
Sample Port Rate Table Cables Cable 1 Cable 2 Cable 5 3920-A2-GN31-30 Port Port 1 Port 2 Port 3 Rate 28.8K 9600 9600 4800 24.0K 9600 Disable 4800 19.2K 9600 Disable 4800 16.8K 9600 Disable Disable 14.4K 9600 Disable Disable 12.0K Disable Disable...
Page 261: Carrier With Network Management
COMSPHERE 392xPlus Modems Carrier with Network Management Figure G-6 shows a sample configuration for COMSPHERE 3000 Series Carrier applications with network management. 28800(V34) 9600 9600 3921 Plus (Sync) 4800 4800 Circuit Card Cable 1 Cable 1 COMSPHERE 3000 Series Carrier Cable 1 Cable 1 Cable 5...
Page 262: Configuration Options
Configuration Options 3921Plus 3920Plus Sample Port Rate Table Cables Cable 1 Cable 2 Cable 5 3920-A2-GN31-30 Use Sync Leased (Answer) default configuration options with the following exception: Rate Refer to the Sample Port Rate Table in this section. Diag Connection Set to NMS(CC).
Page 263: Extended Diagnostics
COMSPHERE 392xPlus Modems Extended Diagnostics Figure G-7 shows a sample configuration for extended diagnostics. Figure G-7. Sample Configuration Configuration Options 3920Plus A 3920Plus B G-14 Extended Diagnostics Use Sync Leased (Answer) default configuration options with the following exception: NetworkPosition Set to Control.
Page 264: Cables
3920Plus C 3920Plus D, F 3910 H 3920Plus E 3910 G Cables Cable 1 Cable 2 Cable 3 Cable 6 Cable 7 Adapter 871A 3920-A2-GN31-30 Use Sync Leased (Answer) default configuration options with the following exceptions: Tx Clock Source Set to External.
Page 265: Digital Bridging
COMSPHERE 392xPlus Modems Digital Bridging Figure G-8 shows a sample for Digital Bridging. Figure G-8. Sample Configuration 3920Plus A 3920Plus B, C 3910Plus D G-16 Digital Bridge Use TMp Control Template default configuration options with the following exception: MUX Mode Set to DTE Bridge.
Page 266: Cables
3920Plus E, G 3920Plus F Cables Cable 1 Cable 2 Cable 3 Cable 4 3920-A2-GN31-30 Use TMp Tributary template default configuration options with the following exceptions: Port2 MSD Set to Enable. RTS Action Set to Sim_Cntl_Car. Auto Dial Back Set to Enable.
Page 267: Point-To-Point Msd
COMSPHERE 392xPlus Modems Point-to-Point MSD Figure G-9 shows a sample configuration for point-to-point MSD. Figure G-9. Sample Configuration — Point-to-Point MSD 3920Plus A 3920Plus B Cables Cable 1 Cable 2 Cable 3 G-18 Use Sync Lease Answer Template default configuration options with the...
Page 268 Sample Port Rate Table: Point-to-Point MSD 3920Plus A Sample Port Rate Table: Point-to-Point MSD 3920Plus B 3920-A2-GN31-30 Port Port 1 Port 2 Port 3 Rate 28.8K 19200 Disable Disable 24.0K 14400 Disable Disable 19.2K 9600 Disable Disable 16.8K 4800 Disable Disable 14.4K...
Page 269: Multipoint Msd
COMSPHERE 392xPlus Modems Multipoint MSD Figure G-10 shows a sample configuration for multipoint MSD. Figure G-10. Sample Configuration — Multipoint MSD 3920Plus A 3920Plus B, C, D G-20 Use TMp Control Template default configuration options with the following exception: NetworkPosition Set to Control.
Page 270: Cables
Cables Cable 1 Cable 2 3920-A2-GN31-30 Use a standard, customer-supplied, EIA-232-D/V.24 cable with a DB-25-P (plug) connector at one end to attach to the modem. Attach this to the connector labeled DTE1, 2, 3, or 4. Use part number 125-0053-1431 (an 8-position, 8-wire modular cord that is supplied with the modem).
Page 271: Equipment List
Model 3920 Plus Model 3921 Plus 6-position, 4-wire modular cord, 7-foot length 8-position, 8-wire modular cord, 14-foot length Universal Power Supply 3600 Hubbing Device EIA-323-D/V.24 Crossover Cable 6-position, 6-wire modular cord 8-position, 8-wire modular cord 871A Adapter 3920-A2-GN31-30 Equipment List Equipment 3920-A1-XXX 3921-B1-XXX...
Page 272 Active (Operating) A configuration area containing configuration options currently in use by the modem. Any time a power cycle occurs or a reset is performed or a save is issued using the DCP, this area is updated with the contents of Active (Saved). Active (Saved) A nonvolatile configuration area containing the most recently saved configuration options.
Page 273 COMSPHERE 392xPlus Modems automatic dial standby When operating in Dial Backup mode, this function forces the modem to periodically check the quality of the leased line. If the leased line is found to be at normal operating condition, the modem disconnects from the dial network and continues normal operation over the leased-line network.
Page 274 circuit pack lock A screw lock tab installed over a circuit card’s latch release tab to prevent the unit from being removed without a tool. It is used on SDUs, modems, and filler panels. command mode One of two modem operating modes. When in Command mode, the modem accepts commands instead of transmitting or receiving data.
Page 275 COMSPHERE 392xPlus Modems A decibel referenced to one milliwatt. This unit measures relative signal power. The equipment (Data Communications Equipment or Data Circuit Terminating Equipment) that provides the functions required to establish, maintain, and end a connection. This equipment also provides the signal conversion required for communication between the DTE and the telephone line.
Page 276 Electronic Industries Association. This organization provides standards for the data communications industry. EIA-232-D An Electronic Industries Association’s standard defining the 25-position interface between data terminal equipment and data communications equipment. EIA RS-366-A An Electronic Industries Association’s standard defining the 25-position interface between data terminal equipment and data communications automatic calling equipment.
Page 277 COMSPHERE 392xPlus Modems idle A state in which the modem’s operating parameters can be modified or commands can be issued to the modem using either AT commands or the DCP. A jack used for leased-line networks. Pins 1 and 2 are the transmit pair and Pins 7 and 8 are the receive pair.
Page 278 network A communications circuit. network management The customer-assigned diagnostic address of a modem. address Network Interface Module. The interface provided, up to two per carrier, for the public switched telephone network (PSTN). non-linear distortion VF line distortion which is usually associated with pulse-code modulation (PCM) compandor noise on the phone line.
Page 279 COMSPHERE 392xPlus Modems register A part of the modem’s memory that contains values that determine the modem’s operating characteristics. Remote A branch of the Top-Level menu that permits access to the DCP of another modem. remote loopback A test that sends a signal to the remote modem to test the local modem, the remote modem, and the circuit between them.
Page 280 A process where two modems try to establish a connection over the VF line. trellis-coded modulation A modulation scheme developed by Paradyne which uses Forward Error Correction for multipoint and high-speed point-to-point applications. tributary modem Tributary modems in a network receive data from the control modem, as well as from the network management system in the network.
Page 281 COMSPHERE 392xPlus Modems Voice Frequency. The part of the audio frequency range used to transmit voice sound (usually 300 Hz to 3400 Hz). This band is used by the modem for its modulated signal. XOFF A character that tells the DTE or modem to stop transmitting data. A character that tells the DTE or modem to start or resume transmitting data.
Page 282 Abort (test), 3-55 ac power requirements, 1-13 Active (Operating) configurations, 4-1 Active (Saved) configurations, 4-1 address, network management, 3-31, 4-29, 4-68 analog loopback test, 3-57–3-58 answer access security, 6-2–6-4 answering a call auto-answer, 3-74, 4-19, 4-46 manual answer, 3-68, 3-75, 4-19, 4-46 Applications, 1-8 digital bridge, 1-9 dual-leased backup, 1-9...
Page 283 (HPt #), 3-23 HDLC, 4-41, D-1 Health and Status definitions, 3-18–3-19, 3-27–3-28 Identity, 3-23 indicators, status (LEDs), 3-3–3-6 installation Model 3920Plus, 2-3–2-12 Model 3921Plus, 2-6–2-10 keypad, 3-8–3-9 LCD (liquid crystal display) description, 3-2, 3-7–3-8 menu structure, 3-10 messages, 3-11–3-16, 3-18–3-19, 3-27–3-28...
Page 284 3-10 tree, A-1–A-3 messages LCD, 3-11–3-16, 3-18–3-19, 3-27–3-28 result codes, 5-3–5-4 Misc configuration options group, 4-28, 4-66 mixed inbound rates, 4-53 Model 3920Plus standalone multiport, 1-2 standalone singleport, 1-2 Model 3921Plus carrier-mounted mulitport, 1-4 carrier-mounted singleport, 1-4 Model 392xPlus, 1-2...
Page 285 COMSPHERE 392xPlus Modems reset control, 3-37 result codes enable/disable, 4-43, 5-7 extended, 4-43, 5-8 list, 5-3–5-4 numeric or word, 4-44, 5-7 ringer equivalence number (REN), 1-11 S-Register list, 5-15–5-28 Security access messages, 3-14 branch, 3-10, 6-4–6-13 configuration options, 6-13–6-14 database tables, 6-2, 6-3, 6-16–6-17 passwords, 6-2–6-4, 6-15–6-16 Security configuration options group, 4-68 Select key, 2-9, 3-8, 3-9...

This manual is also suitable for:

Comsphere 3921plus

Paradyne COMSPHERE 3920PLUS Installation And Operation Manual

Notices

Table Page

Preface

1 Introduction

2 Modem Installation

3 Dcp Operation

4 Dcp Configuration

5 At Command Set and S-Registers

D Ccitt V.25Bis Dialing Command and Responses

Sample Configurations

Quick Links

Chapters

Related Manuals for Paradyne COMSPHERE 3920PLUS

Summary of Contents for Paradyne COMSPHERE 3920PLUS