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NETGEAR XM128 ISDN Reference Manual

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Reference Guide for the
Model XM128 ISDN
Digital Modem
NETGEAR, Inc.
A Bay Networks Company
48105 Warm Springs Blvd.
Fremont, CA 94539
USA
M-XM128NA-1
November 1997

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  • Page 1 Reference Guide for the Model XM128 ISDN Digital Modem NETGEAR, Inc. A Bay Networks Company 48105 Warm Springs Blvd. Fremont, CA 94539 M-XM128NA-1 November 1997...
  • Page 2 In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes to the products described in this document without notice. NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit layout(s) described herein.

  • Page 3: Customer Support

    Serie auf die Erfüllung der Vorschriften hin zu überprüfen. Certificate of the Manufacturer/Importer It is hereby certified that the NETGEAR Model XM128 Digital Modem has been suppressed in accordance with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example, test transmitters) in accordance with the regulations may, however, be subject to certain restrictions.

  • Page 4: World Wide Web

    A direct connection to the Internet and a Web browser such as Internet Explorer or Netscape are required. Bulletin Board Service NETGEAR maintains a bulletin board that you can access to obtain information about the latest version of the software. In the United States, phone 407-531-4574.

  • Page 5: Table Of Contents

    Package Contents ...2-1 Installing the Modem ...2-2 Verifying Hardware Installation ...2-3 Chapter 3 Setup for Windows 95 and Windows NT 4.0 Selecting the Appropriate Windows 95 Driver (INF file) ...3-1 Contents Reference Guide for the Model XM128 ISDN Digital Modem Contents...
  • Page 6 Reference Guide for the Model XM128 ISDN Digital Modem Chapter 4 Configuration Configuring Your ISDN Line and Network ...4-1 Configuring Your Modem Using a Terminal Program ...4-1 Understanding AT Commands ...4-2 Quick Tips for Issuing AT Commands ...4-3 Using AT Commands to Verify Modem Response ...4-4 Communication Speed Setup ...4-4...
  • Page 7 Answering an X.75 Call ...6-16 Making an X.75 Call ...6-17 Making a Bundled Call with X.75 ...6-17 Dialing Prestored Phone Numbers ...6-18 Invoking V.42bis Data Compression ...6-18 Bundle Connection with V.42bis Data Compression ...6-19 Contents Reference Guide for the Model XM128 ISDN Digital Modem...
  • Page 8 Reference Guide for the Model XM128 ISDN Digital Modem Chapter 7 Advanced ISDN Call Control for DSS1 ...7-1 Control of Outgoing Service Indicator ...7-2 Control of ISDN Phone Numbers and Subaddresses ...7-3 Call Control for 1TR6 (Old German ISDN) ...7-5 Control of Outgoing Service Indicator ...7-5...
  • Page 9 Nonpassword Auto Callback Function ... B-4 Appendix C AT Command Set Reference Operation Mode of the DTE Interface ... C-1 Simplex Mode ... C-1 AT Command Descriptions ... C-2 Description of ATI3 Output ... C-7 Contents Reference Guide for the Model XM128 ISDN Digital Modem...
  • Page 10 Reference Guide for the Model XM128 ISDN Digital Modem Appendix D Status Registers and Result Codes Viewing and Setting S-Registers ... D-1 Setting S-Registers ... D-2 Examples for Setting S-Registers ... D-2 S-Register Descriptions ... D-4 ATXn Result Code Option Table ... D-19 Result Code Chart Symbol Reference ...
  • Page 11 Figure 1-1. Front panel of the Model XM128 modem (with S/T interface) ...1-3 Figure 1-2. Front panel of the Model XM128 modem (with U interface) ...1-4 Figure 1-3. Rear panel of the Model XM128 modem (with S interface) ...1-6 Figure 1-4. Rear panel of the Model XM128 modem (with U interface) ...1-6 Figure 2-1.
  • Page 12 Figures...
  • Page 13 Table 1. Manual contents ...xix Table 2. Manuals ... xx Table 1-1. Interface options ...1-3 Table 1-2. LED descriptions ...1-4 Table 1-3. Rear panel components ...1-7 Table 4-1. Terminal programs ...4-2 Table 4-2. Supported AT command types ...4-3 Table 4-3. Result codes commands ...4-4 Table 4-4.
  • Page 14 Table 7-1. S-register values and functions ...7-2 Table 7-2. Outgoing low-layer compatibility commands ...7-3 Table 8-1. Frequently used AT commands ...8-2 Table 8-2. Frequently used AT commands (European switches) ...8-2 Table 9-1. Definitions for the d modifier ...9-1 Table 10-1. Power-on self-test ...10-1 Table 10-2.
  • Page 15 Table E-1. RJ-45 plug and RJ-45 connector pin assignments for the S/T interface . E-2 Table E-2. RJ-45 plug and RJ-45 connector pin assignments for the U interface ... E-2 Table E-3. RJ-11 connector pin assignments ... E-3 Table F-1. Serial port interface ...F-1 Table F-2.
  • Page 16 Tables...

  • Page 17: Preface

    ™ Model XM128 ISDN Digital Modem. The NETGEAR Model XM128 modem provides connection for one or more PCs to the Internet or to the office over ISDN (Integrated Services Digital Network) lines. The modem operates at a speed of up to 460 kilobits per second (Kbps) data rate, or 115 Kbps data rate without compression, and can download video clips, music, or high-resolution color graphics from the World Wide Web or other online services many times faster than an analog modem.

  • Page 18: Conventions

    Reference Guide for the Model XM128 ISDN Digital Modem Conventions This section describes the conventions used in this guide. Special Message Formats This guide uses the following formats to highlight special messages. Note: This format is used to highlight information of importance or special interest.

  • Page 19: Other Conventions

    ALL CAPS DOS file and directory names. Related Publication Refer to Getting Started Using FirstGear for the Model XM128 ISDN Digital Modem for a quick installation guide. Refer to Table 1 this table identifies the order of basic procedures you must complete to install your Model XM128 modem.

  • Page 20: Table 2. Manuals

    Reference Guide for the Model XM128 ISDN Digital Modem Table 1. Manual contents (continued) Subject Assigning multiple subscriber numbers Assigning protocols Configuring Windows 95 Dial-Up Networking Table 2 lists the manuals that are available for various localized products. Table 2.

  • Page 21: Introduction

    Chapter 1 Introduction Congratulations on your purchase of the NETGEAR Model XM128 ISDN Digital Modem. The Model XM128 modem sets a new price and performance standard for the rapidly growing Internet and telecommuting applications. When used with off-the-shelf Internet or remote access client software, the Model XM128 modem enables mobile or home users to easily connect to the Internet or branch offices over Integrated Services Digital Network (ISDN) lines.
  • Page 22 Reference Guide for the Model XM128 ISDN Digital Modem The Model XM128 modem has two analog ports to connect analog devices such as fax machines, modems, and telephones. Two different devices can communicate over the two B channels to different locations simultaneously, enabling you to send a fax and make a voice call at the same time.

  • Page 23: Interface Options

    Interface U (internal NT-1) Auto SPID Switch For the North American ISDN, NETGEAR provides an optional 2B1Q U interface to allow direct connection to the network without the use of an external NT-1 device. Front Panel For easier management and control of the Model XM128 modem, familiarize yourself with the components on the front panel, as illustrated in bottom of each illustration to identify the panel components.

  • Page 24: Table 1-2. Led Descriptions

    Reference Guide for the Model XM128 ISDN Digital Modem INTERFACE ISDN Digital Modem 128Kpbs ISDN Key: 1 = PWR (power) LED 2 = ISDN LEDs 3 = RS-232 COM LEDs 4 = PHONE 1 and PHONE 2 LEDs Figure 1-2.
  • Page 25 Blinking PHONE 1 PHONE 2 Introduction Reference Guide for the Model XM128 ISDN Digital Modem Description The data terminal or computer connected to the COM port on the Model XM128 modem is ready to communicate. The Model XM128 modem is ready to communicate with the connected data terminal or computer.

  • Page 26: Rear Panel

    Reference Guide for the Model XM128 ISDN Digital Modem Rear Panel As illustrated in Figure 1-3 receptacle, and ports to connect a computer, ISDN line, and two analog devices (phone, fax, or modem). ON/OFF POWER RS-232 key: 1 = ON/OFF switch...
  • Page 27 This port is for connecting the RJ-11 connector of an analog device (telephone, fax, or analog modem). PHONE 2 This port is for connecting the RJ-11 connector of an analog device (telephone, fax, or analog modem). Introduction Reference Guide for the Model XM128 ISDN Digital Modem...

  • Page 29: Installation

    This chapter information about installing and using the Model XM128 ISDN Digital Modem. Package Contents Your package should contain the following items: • Model XM128 ISDN Digital Modem • Power adapter • RJ-45 ISDN telephone cable • Shielded RS-232 25-pin to 25-pin cable •...

  • Page 30: Installing The Modem

    Reference Guide for the Model XM128 ISDN Digital Modem To qualify for product updates and product warranty registrations, fill in the Warranty and Owner Registration Card within 30 days of purchase and return it to NETGEAR, Inc. Installing the Modem Before connecting any of the devices to your modem, make sure the power is turned off on your computer and your Model XM128 modem.

  • Page 31: Verifying Hardware Installation

    The B1, B2, and AA LED lights blink on and then off again. After this cycle is complete, the PWR (power) LED remains on. If the test routine fails, the D LED blinks. Refer to Chapter 10, information about the self-test and the error codes. Installation Reference Guide for the Model XM128 ISDN Digital Modem “Troubleshooting,” for more...

  • Page 33: Setup For Windows 95 And Windows Nt 4.0

    Click on Next. Click on Have Disk. Insert the NETGEAR Windows 95 driver disk into your floppy drive and click on OK. If you have downloaded an updated INF file from NETGEAR’s Web site or BBS, use Browse to find the location of the updated INF file, click on Open, then click on OK.

  • Page 34: Chapter 3 Setup For Windows 95 And Windows Nt

    Reference Guide for the Model XM128 ISDN Digital Modem Select the Model XM128 modem driver with the protocol that your host is using. Generally, the following examples work. However, we recommend that you verify the protocol your Internet service provider (ISP) uses.

  • Page 35: Configuring Your Isdn Line And Network

    ISDN line. NETGEAR provides a simple Windows 95 or NT 4.0 utility to help you set up the Model XM128 modem. Refer to Getting Started Using FirstGear for the XM128 ISDN Digital Modem for complete instructions.

  • Page 36: Understanding At Commands

    Reference Guide for the Model XM128 ISDN Digital Modem The setup procedure for the Model XM128 modem needs to be done only once because the settings are stored in the nonvolatile RAM of the modem and turning the power off does not erase the information.

  • Page 37: Quick Tips For Issuing At Commands

    XM128 modem supports either verbose result code (OK, for example) or numerical result code (0, for example). You can use the ATVn command to set it one way or the other. Configuration Reference Guide for the Model XM128 ISDN Digital Modem Example AT&F...

  • Page 38: Using At Commands To Verify Modem Response

    Reference Guide for the Model XM128 ISDN Digital Modem Table 4-3 lists the commands for viewing both the numerical and verbose result codes. Table 4-3. Result codes commands Command Description ATV0 Select numerical result code ATV1 Select verbose result code...

  • Page 39: Switch Type Setup For North America

    You should receive the following response: Switch Type: Northern Telecom DMS 100 Type AT&WZ and [Enter] to save the settings. You should receive the following response: Configuration Reference Guide for the Model XM128 ISDN Digital Modem Switch version AT command Point-to-point Protocol ATP4...

  • Page 40: Spid Setup For North America

    Reference Guide for the Model XM128 ISDN Digital Modem SPID Setup for North America SPID numbers are needed unless your switch type is AT&T 5ESS with Point-to-Point Protocol. The ISDN switches use SPID numbers to represent the subscribed network services. Each SPID corresponds to one terminal end point identifier.

  • Page 41: Entering Dns

    Type the command AT&ZOB= and the outgoing telephone number for PHONE 2. For example, AT&ZOB=5553333 Assign a protocol using the commands in Configuration Reference Guide for the Model XM128 ISDN Digital Modem Table 4-5 to configure the B channel protocol.
  • Page 42 Reference Guide for the Model XM128 ISDN Digital Modem Table 4-5. AT commands for setting protocols Protocol X.75 V.110 user rate - 38400 bps V.120 For example, if the protocol you want is PPP, type the command ATB40&O2. For other X.75 or V.110 protocol options, refer to Appendix C, “AT Command Set Reference.”...

  • Page 43: Async To Sync Ppp

    This chapter describes the application of asynchronous to synchronous HDLC conversion. Internet and Remote Access PPP and SLIP More and more Internet Service Providers are offering their services through dial-up ISDN lines for higher data bandwidth. The equipment used by your service provider frequently consists of ISDN LAN routers which, unlike a digital modem, do not have asynchronous capability.

  • Page 44: Keeping A Line Connection During Idle Time

    Reference Guide for the Model XM128 ISDN Digital Modem Most of the time, you only use this protocol for making calls to remote sites with ISDN LAN Routers. If the remote access site you are calling uses a Terminal Adapter such as the Model XM128 modem, you can use V.120, as it provides data compression.

  • Page 45: Answering Async To Sync Ppp Calls

    If the destination refuses the Multilink PPP during the Link Control Protocol (LCP) negotiation, a single B channel PPP connection is established. The connection message is the same whether the Multilink PPP connections have been established or not. Async to Sync PPP Reference Guide for the Model XM128 ISDN Digital Modem...

  • Page 46: Dialing Pre-Stored Phone Numbers

    Reference Guide for the Model XM128 ISDN Digital Modem Dialing Pre-stored Phone Numbers The ATDSn command, n=0,1,..,39, dials the (n+1)th phone number twice for both of the Multilink PPP connections. The command ATDSn+Sm, (n and n=0,1,...,39) dials the (n+1)th phone number for the first connection and the (m+1)th phone number for the second connection.

  • Page 47: Call Bumping Dynamic Channel Allocation

    (the client site). The following command can be used to select the DCA function: ATCE0 (disables call bumping) ATCE1 (enables call bumping by default) Async to Sync PPP Reference Guide for the Model XM128 ISDN Digital Modem...

  • Page 49: Isdn Overview

    This chapter covers the procedures for initiating and receiving calls over digital lines using your Model XM128 ISDN Digital Modem. Commands for Outgoing Calls The Model XM128 modem uses the following three modes to send communication over your ISDN network: •...

  • Page 50: Dialing Out Using Isdn Mode Optional Speech Bearer Service

    Reference Guide for the Model XM128 ISDN Digital Modem Dialing Out Using ISDN Mode Optional Speech Bearer Service The Model XM128 modem supports ISDN data utilizing Speech Bearer Service. To enable this function, you need to set S-register S83 bit 7 to 1 (ATS83.7=1). This function is useful in the areas where ISDN service providers charge lower usage rates for voice (speech) calls.

  • Page 51: Placing The Call

    Table 6-2. Call placing commands Command Description ATBnn Changes ISDN B channel protocol setting ATDL Redials the last dialed telephone number ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem Table 6-1. Table 6-2 contains some simple commands that...

  • Page 52: Commands For Incoming Calls

    Reference Guide for the Model XM128 ISDN Digital Modem Commands for Incoming Calls When a call comes in, the call is carried by one of the following protocols: • V.120 • HDLC PPP, MPPP, or SLIP • V.110 • X.75 Or the call may be initiated by an analog device.

  • Page 53: Determining The Packet Length

    You should receive this message: Enter ATCL? (to inquire about the current setting of the packet length). You should receive this message: Maximum user data length in a packet (byte) : 252 ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem...

  • Page 54: Answering A Call Using Msn

    Reference Guide for the Model XM128 ISDN Digital Modem Answering a Call Using MSN When answering an incoming call, the call is first identified if the caller number matches the Multiple Subscriber Number (MSN) settings. The MSN supplementary service enables multiple ISDN numbers to be assigned to a single ISDN BRI line.

  • Page 55: Data Over Speech Channel

    Model XM128 modem, by default, ignores the call because it may be intended for other devices that share the same S/T interface (S0 bus) with the Model XM128 modem. ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem...

  • Page 56: Ambiguity Resolution Switch For Voice Calls

    Reference Guide for the Model XM128 ISDN Digital Modem If you want the Model XM128 modem to answer inbound calls using all possible protocols, refer Table 6-4 for the commands used to set the best-effort call answering bit. Table 6-4.

  • Page 57: Understanding Isdn Communication Protocols

    Async Only with V-Series DTE Bundle Max. Line Speed Async: 38.4 Kbps Sync: 64 Kbps AT-Command ATB10 Configuration ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem V.120 HDLC LAPD V.120 Async Only 64 Kbps 128 Kbps ATB20 X.75...

  • Page 58: V.110 Isdn Communications

    Reference Guide for the Model XM128 ISDN Digital Modem V.110 ISDN Communications This section describes how to set up and configure your Model XM128 modem with the V.110 Protocol. Answering a V.110 Call After you set the proper V.110 communication mode, there is no need to configure the ISDN mode to the protocol of an incoming call.

  • Page 59: V.120 Isdn Communications

    If the called modem does not get any B channel protocol information from the incoming setup message and the remote device is a NETGEAR ISDN device, the Model XM128 modem can identify the V.120 protocol automatically with the Multi Auto-answer Routine. Otherwise, the handshake fails.

  • Page 60: Answering A V.120 Call

    Reference Guide for the Model XM128 ISDN Digital Modem Answering a V.120 Call In most cases, there is no need to configure the Model XM128 modem to properly answer calls. The Model XM128 modem decides which protocol to use by detecting the type of data that is received.

  • Page 61: Dialing In V.120 Mode

    To set up your Model XM128 modem to make a bundled V.120 connection, follow these steps: Enter ATB20 (set B channel protocol to V.120). Enter AT&J3 (set the Model XM128 modem to make a bundled call). ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem 6-13...

  • Page 62: Identifying Your Line Provisioning

    Reference Guide for the Model XM128 ISDN Digital Modem Enter AT&WZ (if you want to save the setting). After these commands are entered, the ATD command generates two consecutive setup messages to invoke bundle initiation. For the Northern Telecom switch, each BRI phone number can be called only once at any given time.

  • Page 63: 128 Kbps Speeds

    V.42bis is an international data compression standard commonly used in modem communications. This standard provides real-time data compression. The NETGEAR expertise in data compression has been brought into its ISDN applications, which are much higher in speed than modem communications.

  • Page 64: Isdn Communications (Europe)

    Reference Guide for the Model XM128 ISDN Digital Modem Because the V.42bis algorithm needs an error-free transmission channel between the compression and decompression processes, it can only work with a protocol that has error control competence. The X.75 and V.120 protocols can be used together with V.42bis data compression. The V.110 protocol, on the other hand, is just an R-interface layer 1 adaptation protocol without error-control and is thus inadequate for V.42bis.

  • Page 65: Making A Bundled Call With X.75

    (or origination address for and service indicator for 1TR6), then it is deemed as a bundle request. The two data calls are established following normal call control procedures. That is, the network treats them as two independent calls. ISDN Overview Reference Guide for the Model XM128 ISDN Digital Modem 6-17...

  • Page 66: Dialing Prestored Phone Numbers

    Reference Guide for the Model XM128 ISDN Digital Modem The devices in the two sites then use X.75 Multiple Link Protocol or cFos channel bundling protocol to coordinate the two B channels. The former would need an overhead of 2 octets for each packet.

  • Page 67: Bundle Connection With V.42Bis Data Compression

    Reference Guide for the Model XM128 ISDN Digital Modem Although not defined in X.75, the XID frame is based on the encoding in ISO Standard 8885 and on being used in V.42/V.42bis. In addition to the compression parameters, XID can be used to negotiate such packet parameters as window or packet size.

  • Page 69: Advanced Isdn

    This chapter provides information about using advanced ISDN for the Model XM128 ISDN Digital Modem. Call Control for DSS1 In order to initiate a Digital Subscriber Signaling #1 (DSS1) ISDN call, two information elements are necessary: • The bearer capability element indicates what kind of bearer service is desired. It is also used for compatibility checking in the addressed entity.

  • Page 70: Control Of Outgoing Service Indicator

    Reference Guide for the Model XM128 ISDN Digital Modem Control of Outgoing Service Indicator The high-layer compatibility and low-layer compatibility information provides a means for compatibility checking by the called party. This information is transferred transparently by the ISDN network between the call-originating entity (for example, the calling user) and the addressed entity.

  • Page 71: Control Of Isdn Phone Numbers And Subaddresses

    AT&ZOx=s command. The possible values for x are as follows: • x = I for ISDN data calls • x = A for the analog adapter 1 • x = B for the analog adapter 2 Advanced ISDN Reference Guide for the Model XM128 ISDN Digital Modem...
  • Page 72 Reference Guide for the Model XM128 ISDN Digital Modem The number-subaddress string s is defined as: s = [[Yn][Nn]own-number][/[[Zn]own-subaddress]/] Yn specifies the type of number: • Y0 for unknown (default if Yn is omitted) • Y1 for international number •...

  • Page 73: Call Control For 1Tr6 (Old German Isdn)

    S108: analog, PHONE 2 • Telephone1 (Fernsprechen)1 (3.1 KHz) • Modem2 (analog - dienste)3 (Daten Über Modem) • 4 (Btx Über Modem) • G3 Fax3 (analog - dienste)2 (Fax Gruppe 3) Advanced ISDN Reference Guide for the Model XM128 ISDN Digital Modem...

  • Page 74: Control Of Eaz (Endgeräteauswahlziffer)

    Reference Guide for the Model XM128 ISDN Digital Modem Control of EAZ (ENDGERÄTEAUSWAHLZIFFER) EAZ (or terminal selection code) is the last digit of an ISDN phone number in 1TR6. Usually EAZ=0 indicates that a global call (any terminal on the S0 interface), which is service-compatible with the incoming call, can answer the call.

  • Page 75: Answering A Call

    Reference Guide for the Model XM128 ISDN Digital Modem The EAZ (last digit) of the destination address in an incoming setup message is checked with the protocol of each EAZ. If there is a match and the service indicated is compatible with this protocol, the call be accepted using the protocol.

  • Page 76: Answering A Call For 1Tr6

    Reference Guide for the Model XM128 ISDN Digital Modem In some areas, however, it is very expensive to get additional subscriber numbers. The subaddress, which is transferred transparently by the ISDN network between the calling user and the addressed user, can be used for the same purpose as the MSN. Because the Model XM128 modem is highly integrated and multifunctional, it can be thought of as a black box that contains multiple distinct terminals.

  • Page 77: Ambiguity Resolution Switch For Voice Calls

    The Model XM128 modem can monitor the B channel signal sent by the calling site. The data call can be identified by the Model XM128 modem as X.75, V.110, V.120, or PPP Async-to-Sync conversion and MPPP. Advanced ISDN Reference Guide for the Model XM128 ISDN Digital Modem...

  • Page 78: Data Call Indication

    Reference Guide for the Model XM128 ISDN Digital Modem Data Call Indication Data calls are accepted by the Model XM128 modem in the same way as with any terminal adapter. When alerting, the Model XM128 modem sends the first Ring message to the DTE with a format as follows: RING <CR><LF>...

  • Page 79: Point-To-Point Configuration

    Y0 for unknown (default if Yn is omitted) • Y1 for international number • Y2 for national number • Y3 for network specific number • Y4 for subscriber number Advanced ISDN Reference Guide for the Model XM128 ISDN Digital Modem 7-11...

  • Page 80: Placing A Call For 1Tr6

    Reference Guide for the Model XM128 ISDN Digital Modem Nn is the identifier of the numbering plan for the ATDx command: • N0 for unknown (default if Nn is omitted) • N1 for ISDN numbering plan (Rec. E.164) • N3 for data numbering plan (Rec. X.121) •...

  • Page 81: User-To-User Information

    Reference Guide for the Model XM128 ISDN Digital Modem User-To-User Information The Model XM128 modem supports user-to-user information exchange via the D channel. To transmit a message, use the ATT4<message...> command. The angle brackets (< >) are part of this command. The message is included in a user-to-user information element, which is sent with the first valid message that follows.

  • Page 83: Analog Call Handling

    Appendix E, “Connector Pin Assignments.” Note: German NETGEAR customers: The inner two pins of the RJ-11 are used for the Tip and Ring (or a and b signals in Germany, the two signals that connect to a telephone set).

  • Page 84: At Commands For Analog Calls

    Reference Guide for the Model XM128 ISDN Digital Modem AT Commands for Analog Calls Table 8-1 lists some of the most frequently used AT commands. Table 8-1. Frequently used AT commands AT Command Description of command ATDAs Automatically dials out for device connected to PHONE 1.

  • Page 85: Making And Receiving Analog Calls

    This busy tone indicates the failure of the attempt to connect. To place another call, hang up the phone; then pick it up again. If the called party is alerted, a ring-back tone is heard. Analog Call Handling Reference Guide for the Model XM128 ISDN Digital Modem...

  • Page 86: Accepting An Incoming Call

    Reference Guide for the Model XM128 ISDN Digital Modem Accepting an Incoming Call Incoming ISDN calls are directed to one of the analog ports (PHONE 1 or PHONE 2) if: • A voice call is sent to one of the two analog adapters automatically when it is received. As the manufacturer default, the call is sent to the analog adapter, PHONE 1, first then PHONE 2 if PHONE 1 is busy.

  • Page 87: Modem Upgrade

    For other operating systems, use a terminal program that supports the X-modem Protocol. Obtain the new firmware from the NETGEAR bulletin board system (BBS), WWW, or FTP site. Refer to Customer Support on page -iii. The firmware is distributed in the ONETd.vvv file, where the extension vvv denotes the version of this firmware.

  • Page 88: Upgrade Instructions

    Reference Guide for the Model XM128 ISDN Digital Modem Upgrade Instructions To upgrade your Model XM128 modem, turn the modem on and follow these steps: Start any communications program that supports the X-modem Protocol. Enter the command ATUPX. Your Model XM128 modem responds: You have chosen Xmodem (128 octets of data with checksum) protocol to update your ISDN modem.

  • Page 89: Troubleshooting

    This chapter provides quick easy-reference troubleshooting tables for the Model XM128 ISDN Digital Modem. For troubleshooting purposes, the Model XM128 modem performs its own diagnostic tests, which can provide information about each of its functions. The Model XM128 modem provides several diagnostic capabilities: •...

  • Page 90: Loopback Tests

    Reference Guide for the Model XM128 ISDN Digital Modem Note: The LED lights up during the test and blinks if the test fails. The LNK LED light s up for a half second to indicate the success of the power-on self-test. Then the LNK LED becomes the normal physical layer (layer 1) active indicator.

  • Page 91: B1/B2 Loopback With Self-Test

    Listen to the Ring and then pick up phone set #1... !! Off-hook action is detected, (Hook Interrupt) ... OK Listen to the dial tone and then dial 1234567890*# in sequence.!! 1234567890*# Troubleshooting Reference Guide for the Model XM128 ISDN Digital Modem 10-3...

  • Page 92: Modem Reset

    Reference Guide for the Model XM128 ISDN Digital Modem Dialed digits detected, please hang-up the handset….!! On-hook action is detected, (Hook Interrupt)... OK Listen to the RING and then pick up phone set #2 ...!! Off-hook action is detected, (Hook Interrupt) ... OK...

  • Page 93: Setting Up The Embedded Epa

    According to the analysis of the EPA, you might decide to fix the problem yourself ( modify the configuration and try again) or log the analyzed results as a file (a very comprehensive bug report), and then send it to NETGEAR Technical Support. Capturing the Protocol Data The data captured by the EPA is classified into three categories: •...

  • Page 94: Analyzing The Captured Data

    AT commands/responses as well as the CAPI internal interface. The CAPI internal interface is used with NETGEAR CAPI driver. The NETGEAR CAPI driver communicates with the Model XM128 modem through this internal interface. It is not recommended that users get involved in this internal interface.
  • Page 95 Cursor up Scroll one line down Page up Display the previous page Q, q Quit Quit embedded protocol analyzer Troubleshooting Reference Guide for the Model XM128 ISDN Digital Modem Table 10-4. Any other key pops up the control menu. 10-7...

  • Page 97: Technical Specifications

    This appendix provides the technical specifications for the Model XM128 ISDN Digital Modem. General Specifications Network Protocols and Standards Compatibility WAN Protocols: ISDN Standards: Compatibility: Security PAP, CHAP, Caller ID, Callback, Call blocking Technical Specifications Appendix A Technical Specifications Multilink PPP, BACP, PPP V.120, V.110, X.75 National ISDN-1 (North America) AT&T 5ESS Custom (North America)
  • Page 98 Reference Guide for the Model XM128 ISDN Digital Modem Data Compression Power Adapter Physical Specifications Dimensions: Weight: Environmental Specifications Operating temperature: Operating humidity: Electromagnetic Emissions CE Mark FCC Part 15 Class B EN 55 022 (CISPR 22), Class A VCCI Class 2 Hi/fn LZS (Stac) Compression with CCP V.42bis...

  • Page 99: Appendix B Security Functions

    This appendix describes the security functions of the Model XM128 ISDN Digital Modem. The modem provides two types of security functions that may be enabled to prevent unauthorized connections. Security Types and Levels The Model XM128 modem provides the following types of security: •...

  • Page 100: Level 1 Security

    Reference Guide for the Model XM128 ISDN Digital Modem The two types of security are summarized in Table B-1. Types of security Type 1 Security Remote (Calling) Site NETGEAR ISDN device only Password Check Automatic Protocols Supported X.75, V.120 AT Commands...

  • Page 101: Level 3 Security

    The default supervisor password is NETGEAR when the Model XM128 modem is shipped from the factory. This supervisory password is sent to the remote user if Type 1 security is set at the remote end.

  • Page 102: Nonpassword Auto Callback Function

    Reference Guide for the Model XM128 ISDN Digital Modem You are asked to enter the original password, to enter a new password, and then to reenter the new password for verification. For example, you are prompted with the following: Password: Enter the current supervisory password at this prompt.

  • Page 103: Appendix Cat Command Set Reference

    Appendix C AT Command Set Reference This appendix provides information for using AT commands for the Model XM128 ISDN Digital Modem. Operation Mode of the DTE Interface The operation mode for the DTE interface is Simplex mode. This mode is used for conventional AT command operation.

  • Page 104: At Command Descriptions

    Reference Guide for the Model XM128 ISDN Digital Modem AT Command Descriptions The AT command is a command in asynchronous data format issued by the computer to the Model XM128 modem through the asynchronous computer-modem interface. AT commands control the behavior and actions of the modem.

  • Page 105: Table C-1. Basic At Command Set

    Inquire current setting of ATCLn. CN<prefix> Prefix number string to be added to the calling party number before indicating to the DTE when the type of number denotes national. AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem...
  • Page 106 Reference Guide for the Model XM128 ISDN Digital Modem Table C-1. Basic AT command set (continued) Command Options Function and description Loopback 4 control Disable Loopback 4 Enable Loopback 4 n=0-3 Resumes a previously suspended call; n is the call identifier (Europe).
  • Page 107 Results: XM128 <switch>: V x.xx where <switch>= USA, DSS1, or 1TR6 Display link status report Display Microsoft PnP code n=0-255 Add-threshold for MPPP in Kbps unit AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem (USA) (DSS1) (1TR6)
  • Page 108 Reference Guide for the Model XM128 ISDN Digital Modem Table C-1. Basic AT command set (continued) Command Options Function and description n=0-255 Sub-threshold for MPPP in Kbps unit KAxn n=0-63 Add-persist time interval for BOD; BOD disabled if n=0 x= M(in Minute unit) or S(in Second unit)

  • Page 109: Description Of Ati3 Output

    Connect DTE Speed Error Control Level Protocol Link Speed Octets Received Octets Sent Cause Cause Value HDLC FCS Error HDLC Receive Over-run HDLC Transmit Under-run : 0 AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem...
  • Page 110 Reference Guide for the Model XM128 ISDN Digital Modem Table C-2 shows the outputs for the AT13 commands. Table C-2. ATI3 command output Output parameter Connect DTE Speed Error Control Level Protocol Link Speed Octets Received Octets Sent Cause Cause Value...

  • Page 111: Table C-3. Extended At& Command Set

    &J2 &J3 AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem Function and description Data Terminal Ready (DTR) options. See also S-registers 21.6 to 21.7 and 25. For a description of Extended S-registers, refer to Table D-4 on page D-5 in Appendix D, “Status Registers and Result Codes."...
  • Page 112 Reference Guide for the Model XM128 ISDN Digital Modem Table C-3. Extended AT& command set (continued) Command Options &Knn &K00 &K44 &Ln &L0 &L1 &On &O0 &O2 &O3 &Sn &S0 * &S1 &Tn &T9 &T10 &Vn &V0 &V1-4 &V5 &V6 &V7...
  • Page 113 &ZO? &ZOn=x AT Command Set Reference Reference Guide for the Model XM128 ISDN Digital Modem Function and description Writes current settings to user profile n in nonvolatile RAM. See also S-register 35.6. For a description of Extended S-registers, refer to Table D-4 on page D-5 in Appendix D, “Status Registers and Result Codes."...

  • Page 114: Table C-4. Extended At* Command Set

    Reference Guide for the Model XM128 ISDN Digital Modem Table C-4 lists the extended AT* command set. Table C-4. Extended AT* command set Command Options Function and description n=0-3 Character length, including start, stop and parity bit. See also S-register 15.3 and 15.4.

  • Page 115: Status Registers And Result Codes

    S0 to S11 are standard AT S-registers, and S12 to S124 are mostly bitmap configured. Changes in the bitmap configuration can have the same effect as issuing AT commands. However, NETGEAR recommends that you use equivalent AT commands.

  • Page 116: Setting S-Registers

    Reference Guide for the Model XM128 ISDN Digital Modem Type the &Vn command AT&Vn to view all of the S-register settings. To view different S-register settings, use the following for n: • 0 for viewing S-register settings for current active profile •...
  • Page 117 AND operation to set bit 3 to 0 (binary). Using the resulting decimal value, type the ATS38=n command to set the register. Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Hexadecimal value Example 2...

  • Page 118: S-Register Descriptions

    Reference Guide for the Model XM128 ISDN Digital Modem S-Register Descriptions In most bitmapped S-registers, the default bit value is 0 (which is the normal situation) and only the nondefault situation is described. Some reserved bits are for factory use, and the user should not change them.

  • Page 119: Table D-4. Extended S-Registers Atsn=X

    Default or reference column of the table. Table D-4. Extended S-registers ATSn=x Command Decimal S15= S16= S18= Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Function and Hexadecimal description Bitmapped register Even parity Odd parity No parity 1 stop bit...
  • Page 120 Reference Guide for the Model XM128 ISDN Digital Modem Table D-4. Extended S-registers ATSn=x (continued) Command Decimal S20= S21= Function and Hexadecimal description DTE speed (bps) auto-detected from AT command 230400 bps 115200 bps 57600 bps 38400 bps 19200 bps...
  • Page 121 Extended S-registers ATSn=x (continued) Command Decimal S21= (continued) S23= Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Function and Hexadecimal description Assumes that Data Terminal Ready (DTR) is always on. 108.1, DTR off-on transition causes dial of the default number.
  • Page 122 Reference Guide for the Model XM128 ISDN Digital Modem Table D-4. Extended S-registers ATSn=x (continued) Command Decimal S24= S25= 0-255 S27= S29= S31= 0-255 S32= 0-255 Function and Hexadecimal description Bitmapped register. Ring volume control, in increments of 1 in decimal value Ignore S21.1-2 when PHONE 1...
  • Page 123 S38= S40= S41= S42= S44= S56= 0-255 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Function and Hexadecimal description Bitmapped register When Data/Voice is pressed, the Model XM128 modem dials the default number. Enable extended numerical result codes from 50 -71 when an error corrected connection is made.
  • Page 124 Reference Guide for the Model XM128 ISDN Digital Modem Table D-4. Extended S-registers ATSn=x (continued) Command Decimal S64= 0-255 S80= D-10 Function and Hexadecimal description 0-FF Security callback timer in unit of 1 second. Bitmapped register Do not send low-layer compatibility...
  • Page 125 Table D-4. Extended S-registers ATSn=x (continued) Command Decimal S82= S83= Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Function and Hexadecimal description ISDN B channel protocol V.120 64000 V.120 56000 X.75 64000 Transparent X.75 56000 Transparent X.75 64000 T.70...
  • Page 126 Reference Guide for the Model XM128 ISDN Digital Modem Table D-4. Extended S-registers ATSn=x (continued) Command Decimal S84= S85= S86= D-12 Function and Hexadecimal description Displays S-register value in hex format. Indicates Caller ID after the 1st RING message. Disables Caller ID indication.
  • Page 127 Command Decimal S87= S89= S100= S102= Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Function and Hexadecimal description Bundle connection is disabled. Bundle connection is enabled in answer mode only. Bundle connection is enabled in call mode only.
  • Page 128 Reference Guide for the Model XM128 ISDN Digital Modem Table D-4. Extended S-registers ATSn=x (continued) Command Decimal S104+n= S108+n= SI=1 SI=2 D-14 Function and Hexadecimal description Outgoing service additional (for 1TR6 only) information: n=0, analog adapter, PHONE 2 n=2, ISDN data...
  • Page 129 Table D-4. Extended S-registers ATSn=x (continued) Command Decimal S108+n= SI=7 (continued) Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Function and Hexadecimal description Daten bertragung 64 Kbps (X.75 SLP) Async. V.110 Extensions of async.
  • Page 130 Reference Guide for the Model XM128 ISDN Digital Modem Table D-4. Extended S-registers ATSn=x (continued) Command Decimal S108+n= S114= S115= S117= D-16 Function and Hexadecimal description High-layer compatibility (Non-1TR6) n=0, analog adapter,PHONE 2 n=2, ISDN data n=3, analog adapter, PHONE 1 No high-layer compatibility information element is sent.
  • Page 131 Decimal S118= Decimal (see AT&ZIn=s) S119= Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Function and Hexadecimal description Hexadecimal Enables dial-in call. Disables dial-in call (dial out only). Default B channel line speed is 64 Kbps for ISDN data call.
  • Page 132 Reference Guide for the Model XM128 ISDN Digital Modem Table D-4. Extended S-registers ATSn=x (continued) Command Decimal S119= (continued) S120= S121= S122= S123= S124= 0-255 S125= D-18 Function and Hexadecimal description Disables point-to-multipoint signaling DDI function. Enables point-to-multipoint signaling DDI function.

  • Page 133: Table D-5. Atxn Command Setting Options

    CONNECT 9600 CONNECT 19200 CONNECT 7200 CONNECT 12000 CONNECT 14400 CONNECT 16800 CONNECT 38400 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem Function and Hexadecimal description 0-FF Add-threshold for BOD in Kbps unit 0-FF...
  • Page 134 Reference Guide for the Model XM128 ISDN Digital Modem Table D-5. ATXn command setting options (continued) ATV0 ATV1 CONNECT 57600 CONNECT 76800 CONNECT 115200 CONNECT 230400 CONNECT 460800 CONNECT 921600 CONNECT 307200 CONNECT 153600 CONNECT 102400 CONNECT 61440 CONNECT 51200...

  • Page 135: Result Code Chart Symbol Reference

    Reports the DTE Speed as: <cr><lf>CONNECT DTE_Speed<cr><lf> CONNECT DTE_Speed/Protocol DCE_Speed/ Error_Control ** Example: CONNECT 115200/V120 64000 /LABD <cr><lf>CONNECT DCE_Speed[/Error_Code]<cr><lf> Example: CONNECT 64000/ARQ CONNECT DCE _Speed/Error_Code/Error_Control Example: CONNECT 64000/ARQ/V42b Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem D-21...

  • Page 136: Result Code Field Descriptions

    Reference Guide for the Model XM128 ISDN Digital Modem Result Code Field Descriptions Table D-7 lists the result code field descriptions. Table D-7. Result code field descriptions Field name Possible values Error_Code NONE, ARQ Error_Control LAPB, LAPD, V42 (This field will not show if no error...

  • Page 137: Connect Strings For Error Corrected Connections

    CONNECT 7200 CONNECT 9600 CONNECT 12000 CONNECT 14400 CONNECT 16800 CONNECT 19200 CONNECT 21600 Status Registers and Result Codes Reference Guide for the Model XM128 ISDN Digital Modem ATV0 ATV1 CONNECT 24000 CONNECT 26400 CONNECT 28800 CONNECT 31200 CONNECT 33600...

  • Page 139: Connector Pin Assignments

    Appendix E Connector Pin Assignments This appendix describes the connector pinout assignments for the Model XM128 ISDN Digital Modem. The Model XM128 modem features one RJ-45 ISDN connector and two RJ-11 phone connectors. The RJ-45 connector labeled ISDN-S or ISDN-U is for an ISDN line connection (S/T interface or...
  • Page 140 Reference Guide for the Model XM128 ISDN Digital Modem Table E-1 lists the pin assignments for the RJ-45 plug and RJ-45 connector for the S/T interface. Table E-1. RJ-45 plug and RJ-45 connector pin assignments for the S/T interface Assignment...

  • Page 141: Rj-11 Plug And Connector

    RJ-11 plugs and the RJ-11 connectors for the PHONE 1 and PHONE 2 ports. Table E-3. RJ-11 connector pin assignments Assignment Not connected Ring Not connected Connector Pin Assignments Reference Guide for the Model XM128 ISDN Digital Modem 7895MFA...

  • Page 143: Appendix F Serial Port Interface

    This appendix provides information about the serial port interface for the Model XM128 ISDN Digital Modem. RS-232 Serial Interface Table F-1 describes the RS-232 25-pin serial port interface for the Model XM128 modem. Table F-1. Serial port interface ITU-TSS Pin number...

  • Page 144: Asynchronous Cable Connections

    Reference Guide for the Model XM128 ISDN Digital Modem Table F-1. Serial port interface (continued) ITU-TSS Pin number signal name Asynchronous Cable Connections Table F-2 provides information about the asynchronous flow control cable connection. Table F-2. Asynchronous flow control cable connection...

  • Page 145: Appendix Gisdn Reference

    This appendix explains ISDN technical terms. The appendix also provides you with forms to assist you when working with your local telephone company to set up ISDN services to use with your Model XM128 ISDN Digital Modem. ISDN Overview ISDN is a global system that provides a variety of high-speed digital communication solutions, while maintaining compatibility with existing analog voice, modem, data, and fax protocols.

  • Page 146: Basic Rate Interface

    Reference Guide for the Model XM128 ISDN Digital Modem Basic Rate Interface When you order a Basic Rate Interface (BRI) ISDN line, you receive what is known as the 2B+D service. This service provides two B channels that can transmit at 64 Kbps per channel for user information and a D channel that can communicate between the user and the ISDN network at 16 Kbps.

  • Page 147: Terminal Adapter Or Digital Modem

    In North America, the V.120 Protocol is the most popular Rate Adaptation Protocol used. The V.120 Protocol is an ITU-T protocol that supports synchronous and asynchronous rate adaption and provides link-layer error control. NETGEAR also implements V.42bis data compression on top of V.120, allowing the user to achieve even higher data communication throughput.

  • Page 148: Spid Setup

    Reference Guide for the Model XM128 ISDN Digital Modem Not all the interfaces must exist in actual implementations. For example, not all houses are equipped with a PBX (NT2). In this case, the U interface is provided by the NT-1 device.
  • Page 149 Determine the number of SPID numbers your configuration requires and request that quantity. – The Directory numbers In most cases, you will have two directory numbers. Determine and request the appropriate quantity. ISDN Reference Reference Guide for the Model XM128 ISDN Digital Modem...

  • Page 150: Order Form For At&T 5Ess Switch (Ni-1 Isdn

    Reference Guide for the Model XM128 ISDN Digital Modem Order Form for AT&T 5ESS Switch (NI-1 ISDN) To order ISDN service for the AT&T switch, provide the information on this form to your local telephone company by photocopying and faxing this order form.

  • Page 151: Order Form For Dms-100 Switch (Ni-1 Or Custom Isdn

    Number of SPIDs: __ 0 __ 1 __ 2 ISDN # 1 _______________ SPID #1 _______________ ISDN # 2 _______________ SPID #2 _______________ ISDN Reference Reference Guide for the Model XM128 ISDN Digital Modem Standard (2B+D) NI-1 or custom 2B1Q U interface with RJ-45 jack...

  • Page 152: Order Form For Ewsd (Ni-1 Isdn

    Reference Guide for the Model XM128 ISDN Digital Modem Order Form for EWSD (NI-1 ISDN) To order ISDN service for the EWSD switch, provide the information on this form to your local telephone company by photocopying and faxing this order form.
  • Page 153 Numerics 1TR6 communication incoming calls 7-8 outgoing calls 7-5 placing a call 7-12 address ambiguity 6-8 address matching 6-8 ambiguity resolution 7-9 analog calls 8-1 ANSI 10-5 answer modes 5-3 asynchronous flow control cable F-2 AT commands address ambiguity 6-8 analog calls 8-2 auto callback B-4 basic C-2...
  • Page 154 Reference Guide for the Model XM128 ISDN Digital Modem D channel 10-5 10-6 data call indication 7-10 data compression 6-15 data over speech channel 6-7 DCA 5-5 diagnostic command 10-3 dialing out for analog adapter port 1 6-2 for analog adapter port 2 6-2...
  • Page 155 RJ-11 connector pin assignments E-3 RJ-45 connector pin assignments E-1 RS-232 interface F-1 RS-232 port 1-6 Index Reference Guide for the Model XM128 ISDN Digital Modem security level 1 B-2 level 2 B-2 level 3 B-3 types and levels B-1...
  • Page 156 Reference Guide for the Model XM128 ISDN Digital Modem V.110 call answering 6-10 making a call 6-10 V.120 answering incoming calls 6-12 bundled call 6-13 configuring 6-12 dialing out 6-13 error correction and data compression with 6-15 making a bundled call with 6-13 selecting for European ISDN 6-11 V.42bis data compression 6-18...

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