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Toshiba V.9256K User Manual

Toshiba V.9256K User Manual

Toshiba internal modem user's guide v.9256k
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V.92 56K

Internal Modem

User's Guide
C6628-0702M1
TOSHIBA

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Summary of Contents for Toshiba V.9256K

  • Page 1: Internal Modem

    V.92 56K Internal Modem User’s Guide C6628-0702M1 TOSHIBA...
  • Page 2 FCC Notice “Declaration of Conformity Information” This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 3 Industry Canada Requirement This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe B est conformé à la norme NMB-003 du Canada. Pursuant to FCC CFR 47, Part 68: When you are ready to install or use the modem, call your local telephone company and give them the following information: ❖...

  • Page 4: Fax Branding

    in advance of this disconnection. If advance notice is not feasible, you will be notified as soon as possible. When you are notified, you will be given the opportunity to correct the problem and informed of your right to file a complaint with the FCC.
  • Page 5 water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. Caution: Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate. The user’s guide of analog equipment must contain the equipment’s Ringer Equivalence Number (REN) and an explanation notice similar to the following: The Ringer Equivalence Number (REN) of this device can vary.
  • Page 6 Toshiba assumes no liability for damages incurred directly or indirectly from errors, omissions or discrepancies between the modem and the user’s guide. Trademarks Microsoft and Windows are registered trademarks of Microsoft Corporation. Microcom and Microcom Networking Protocol are registered trademarks of Microcom, Inc.

  • Page 7: Table Of Contents

    Contents Introduction ...12 Conventions ... 12 Features ... 14 Function charts ... 17 Chapter 1: Modem On Hold... 19 Using Modem On Hold... 20 Answering an incoming voice call... 20 Placing an outgoing voice call... 22 Viewing Call History... 25 Configuring Modem On Hold ...
  • Page 8 Contents Chapter 3: Using the Internal Modem ... 44 Connection procedures ... 44 Analog or digital?... 45 Connecting the internal modem ... 45 Disconnecting the internal modem ... 46 Basic operation ... 47 Connecting to a telephone line ... 47 Direct access line ...
  • Page 9 Xn Result code selection, call progress Extended result codes... 64 Dial tone detect ... 64 Busy tone detect ... 64 Zn Recall stored profile ... 65 &Cn Data Carrier Detect (DCD) control ... 65 &Dn Data Terminal Ready (DTR) control ... 66 &F Load factory settings...
  • Page 10 Contents S2 AT escape character (user-defined) ... 83 S3 Command line termination character S4 Response formatting character S5 Command line editing character S6 Wait before dialing... 84 S7 Connection completion time-out... 85 S8 Comma pause time... 85 S11 DTMF dialing speed ... 85 S12 Escape guard time ...
  • Page 11 Commands (%Cn) ... 100 Appendix A: Specifications... 101 Network control unit (NCU) ... 101 Communication specifications ... 102 Appendix B: Communication Conditions ... 103 Communication parameters... 103 Telephone line types... 103 Connectable lines (2-wire) ... 104 Unconnectable lines (4-wire) ... 104 Dial modes...

  • Page 12: Introduction

    Introduction Congratulations on becoming the owner of a V.92 56K-compliant internal modem offering advanced functions for fax and data communication. This user’s guide provides detailed information on features, operation and technical specifications of your internal modem. Conventions This user’s guide uses the following formats to describe, identify, and highlight terms and operating procedures.
  • Page 13 Keys The keyboard keys are used in the text to describe many computer operations. A distinctive typeface identifies the key top symbols as they appear on the keyboard. For example, Enter key. Key operation Some operations require you to simultaneously use two or more keys.

  • Page 14: Features

    Introduction Features Messages Messages are used in this user’s guide to bring important information to your attention. Each type of message is identified as shown below. CAUTION: This icon indicates the existence of a hazard that could result in damage to equipment or property if the safety instruction is not observed.
  • Page 15 ❖ Data Compression—increases transmission speeds using the new V.44 compression algorithm, which is optimized for World Wide Web browsing. The modem also supports MNP5 and V.42bis data compression protocols. The internal modem has a modem port (RJ11) for connecting to an analog telephone line.
  • Page 16 Introduction Features 56K data commu- nication Fax capability Standard com- mands Error control Data compression Serial port access The internal modem uses the V.92 protocol to connect to host V.92 modems at data rates of up to 53,000 bits per second (bps). It uses the V.90 protocol to connect at data rates of up to 53,000 bps when connecting to a V.90 host modem.

  • Page 17: Function Charts

    Ring indicator Standby/Hiber- nate Modem On Hold Fast Connect PCM upstream Function charts The modem supports these communication protocols: Functions available in all operating systems Function Data V.92/V.90 V.34 V.32bis The computer can be powered on automati- cally when the modem answers a call. This feature is available only when the computer is in Resume/Standby mode.
  • Page 18 Introduction Function charts Functions available in all operating systems (Continued) Function V.32 V.22bis V.22 V.23 V.21 BELL212A 1200 bps BELL103 MNP5 MNP4 V.44 V.42bis V.42 V.17 V.29 V.27ter V.21 ch2 EIA-578 Definition: bps stands for bits per second. Remarks 4800, 9600 bps 1200, 2400 bps 1200 bps 75, 600, 1200 bps...

  • Page 19: Chapter 1: Modem On Hold

    Chapter 1 Modem On Hold Your computer comes with the Modem On Hold application preinstalled. This application enables you to answer incoming voice calls or make outgoing voice calls while maintaining your Internet connection, by putting the Internet connection on hold. To use the Modem On Hold feature, you must have Call Waiting service and an ISP that supports the V.92 modem protocol.

  • Page 20: Using Modem On Hold

    Modem On Hold Using Modem On Hold The Modem On Hold application comes configured to automatically launch when you start the computer, displaying icon on the system tray. However, you can change this configuration. See page 25 for instructions. Using Modem On Hold The Modem On Hold application pops up the V.92 Modem On Hold dialog whenever an incoming voice call is detected, or you place an outgoing voice call while connected to the...
  • Page 21 To answer an incoming call, click Answer, then pick up your telephone handset. The Call Status box indicates that the Internet connection is on hold while you complete your voice call. Sample Modem On Hold in progress dialog box To maintain the Internet connection, you must complete the voice call before the Modem On Hold timer expires.

  • Page 22: Placing An Outgoing Voice Call

    Modem On Hold Using Modem On Hold Sample Resuming modem connection dialog box The modem connection is automatically renegotiated and your Internet connection resumes. NOTE: A “Call Canceled” message may display. If this occurs, wait a few seconds while the modem automatically redials and reestablishes your Internet connection.
  • Page 23 The V.92 Modem On Hold dialog appears, instructing you to click the Call button. Sample Placing a voice call dialog box Before the 15-second timer runs out, click Call. Otherwise, click Ignore to cancel the call. The Call Status box indicates that the Internet connection is on hold while you complete your voice call.
  • Page 24 Modem On Hold Using Modem On Hold To end your voice call and resume your Internet connection, wait until the incoming caller has hung up, then click Resume Data Call. If you hang up before the incoming caller, a “Call Cancelled”...

  • Page 25: Viewing Call History

    Viewing Call History The Modem On Hold application provides a log of the last ten incoming calls. The log includes the date, time, phone number, and Caller ID (if you have Caller ID service). To view the call history, right-click the on the system tray, to display the modem popup window.

  • Page 26: Configuring Modem On Hold Settings

    Modem On Hold Configuring Modem On Hold Configuring Modem On Hold settings You configure Modem On Hold settings from the V.92 MoH Settings dialog. To open the V.92 MoH Settings dialog, double-click the icon, located on the system tray in the lower-right corner of your desktop.
  • Page 27 If you do not want the Modem On Hold feature enabled, select Disconnect call. Switch to voice. When the modem detects an incoming voice call during an Internet connection, it disconnects the Internet connection so that you can answer the voice call. If Modem On Hold is enabled, you can select or clear the Enable Caller ID check box to match your telephone service.

  • Page 28: Enabling/Disabling The Modem On Hold Autorun Status

    Modem On Hold Configuring Modem On Hold Enabling/Disabling the Modem On Hold autorun status Right-click the display the modem popup window. Sample modem popup window If Start Automatically is checked, you can click it to clear the check mark. The Modem On Hold application no longer launches automatically when you start your computer.

  • Page 29: Locating The Modem On Hold Application Version

    Locating the Modem On Hold application version Removing the icon Right-click the display the modem popup window. Sample modem popup window Click Exit MOH. A confirmation dialog appears. Click OK to remove the icon from the system tray. Adding the icon From your desktop, click Start, Programs, Toshiba Internal Modem, Modem on Hold.
  • Page 30 Modem On Hold Locating the Modem On Hold application version Click About MOH to display the application version. Sample About MOH...

  • Page 31: Chapter 2: Function Check

    Chapter 2 Function Check This chapter describes how to check the internal modem’s functions. Use this procedure when the modem is not working properly, to help identify the problem and, in many cases, the solution. Running diagnostics If the modem is not working properly, running some simple diagnostics can help you determine if the modem drivers are installed correctly, or if the modem is not working due to a conflict with another application using the communications...
  • Page 32 Function Check Running diagnostics Sample Control Panel Double-click Phone and Modem Options to open the Phone and Modem Options window.
  • Page 33 Function Check Running diagnostics Sample Phone and Modem Options window Click the Modems tab to display the installed modems.
  • Page 34 Function Check Running diagnostics Sample Modems tab dialog box If it is not already selected, click Toshiba Software Modem, then click Properties to open the Toshiba Software Modem Properties window.
  • Page 35 Function Check Running diagnostics Sample Toshiba Software Modem Properties window Click the Diagnostics tab.
  • Page 36 Function Check Running diagnostics Sample Diagnostics tab Click Query Modem. The system executes an automatic operations test, displaying the following message while the test is in progress. Sample Diagnostics test in progress message If the diagnostic test runs successfully, a series of commands and the modem’s response displays in the Modem Information box.
  • Page 37 Sample Diagnostics results If the diagnostics test fails, you may see a “Can’t Open Port” message. This indicates that another application is using the COM port, or the modem driver is not properly installed. If the diagnostic test fails, and this is the first time you’ve run the test, restart the computer and repeat through step...

  • Page 38: Determining Current Connection Protocol

    Function Check Determining current connection protocol Reinstall the Toshiba Software Modem driver. If you do not have the latest driver, you can download it from www.toshiba.com. Repeat step 1 The issued AT commands, and the modem’s response, appear in the Modem Information box. Use the scroll bar, if necessary, to locate the ATI3 command and its response.
  • Page 39 Determining current connection protocol Sample Control Panel Double-click Phone and Modem Options to open the Phone and Modem Options window. Function Check...
  • Page 40 Function Check Determining current connection protocol Sample Phone and Modem Options window Click the Modems tab to display the installed modems.
  • Page 41 Determining current connection protocol Sample Modems tab If it is not already selected, click Toshiba Software Modem, then click Properties to open the Toshiba Software Modem Properties window. Function Check...
  • Page 42 Function Check Determining current connection protocol Sample Toshiba Software Modem Properties window Click the Diagnostics tab.
  • Page 43 Determining current connection protocol Sample Diagnostics tab Click View log to display connection information about the last call. Locate the data compression format in the log. If it lists V.44 data compression, the connection was a V.92 connection. To append connection information for future calls to the existing call log, on the Diagnostics tab select the Append to Log check box.

  • Page 44: Chapter 3: Using The Internal Modem

    Chapter 3 Using the Internal Modem This chapter describes connection procedures and basic operations. Connection procedures This section describes how to connect the internal modem to, and disconnect it from, a telephone jack. CAUTION: The modem is designed for use with a standard analog telephone line.

  • Page 45: Analog Or Digital

    Analog or digital? ❖ If you are not sure which type of line a particular line jack offers, assume that it is digital and do not connect the internal modem to it. ❖ If the wall jack is known to be connected to a PBX (Private Branch Exchange) system, then the line is digital.

  • Page 46: Disconnecting The Internal Modem

    Using the Internal Modem Connection procedures Connecting the internal modem NOTE: When you connect the RJ11 jack, insert it until you hear a click. Disconnecting the internal modem When you need to disconnect the internal modem’s modular cable: Pinch the connecting lever on the connector in the telephone wall jack and pull out the connector.

  • Page 47: Basic Operation

    Basic operation After you connect the modular cable to your internal modem and a telephone line, you are ready to run your communication software. Refer to your software documentation for instructions on operating your internal modem. As examples, this section describes how to execute basic modem operations by typing AT commands directly into the communication software program.

  • Page 48: Extension Line

    Using the Internal Modem Basic operation Extension line If you are calling from an extension line, such as in an office building, and need to dial nine or another number to gain external access, follow the steps below. ❖ To place a call using tone dialing, enter: , ******* and press ATDT 9 The nine or other number is for line access;...

  • Page 49: Receiving A Call

    Receiving a call To set the number of rings before the internal modem automatically answers the phone, set the S0 register as follows: * and press ATS0= The asterisk * indicates the number of rings. “S-Register values” on page 82 Terminating a call The methods for terminating a call depend on the status of the connection.

  • Page 50: Facsimiles

    Using the Internal Modem Basic operation CTS/RTS control This control method is hardware-dependent. To control data flow, the modem and computer transmit Clear To Send/ Request To Send signals to each other. To set CTS/RTS control, enter the following AT command: AT\Q3 XON/XOFF control This control method is managed by software.

  • Page 51: Chapter 4: At Commands

    Chapter 4 AT Commands In most cases, you will not need to type AT commands manually. However, there may be some occasions when you will need to do so. This chapter describes AT commands for data mode. Fax commands are issued by application software. AT command formats The format for entering AT commands is: ATXn...

  • Page 52: Escape Sequence

    AT commands. When you finish, you can return to data mode using the ATO command. There must be a pause after you enter an escape sequence before any additional characters can be sent to the modem.

  • Page 53: Dn Dial

    Result Codes: ERROR Dn Dial This command instructs the modem to dial a telephone number. Enter n (the telephone number and any modifiers) after the ATD command. Any digit or symbol (0-9, *, #, A, B, C, D) may be dialed as touch-tone digits.

  • Page 54: En Echo Command

    AT Commands AT command formats En Echo command This command controls whether or not the characters entered from your computer keyboard are displayed on your monitor (echoed) while the modem is in command mode. Result Codes: ERROR Otherwise Wait for quiet answer. Wait for five seconds of silence after dialing the number.

  • Page 55: Hn Hook Control

    Hn Hook control This command instructs the modem to go on-hook to disconnect a call, or off-hook to make the phone line busy. Result Codes: ERROR In Request ID information This command displays product information about the modem. I0 or AT command formats Modem goes on-hook (default).
  • Page 56 AT Commands AT command formats The following table contains an example of the connection information returned by the I11 command: Description Last Connection Initial Transmit Carrier Rate Initial Receive Carrier Rate Final Transmit Carrier Rate Final Receive Carrier rate Protocol Negotiation Result Data Compression Result Estimated Noise Level Receive Signal Power Level (-dBm)
  • Page 57 Connection Time (sec) The ATI11 command may be issued from online command mode or after the end of a call. After a call, some of the values are no longer valid. The following table defines each command result, and indicates if the result is valid only during the call: Description Last Connection...
  • Page 58 AT Commands AT command formats Transmit Signal Power Level (-dBm) Round Trip Delay (msec) Near Echo Level (-dBm) Far Echo level (-dBm) Transmit Frame Count Transmit Frame Error Count Receive Frame Count Receive Frame Error Count Retrain by Local Modem Retrain by Remote Modem Rate...
  • Page 59 Call Termination Cause Robbed-Bit Signaling Digital Loss (dB) For PCM connection only, the Remote Server ID NA Connection Time (sec) Result Codes: described n=0,1,2,3,4,5,6,7,8,9,11 ERROR Otherwise AT Commands AT command formats The reason the call ended. This value is valid only after the call ends.

  • Page 60: Ln Monitor Speaker Volume

    AT Commands AT command formats Ln Monitor speaker volume This command sets speaker volume to low, medium, or high. Result Codes: ERROR Mn Monitor speaker mode This command turns the speaker on or off. Result Codes: ERROR Low volume Low volume (Same as L0) Medium volume (default) High volume n=0,1,2,3...

  • Page 61: Nn Modulation Handshake

    Nn Modulation handshake This command controls whether or not the local modem performs a negotiated handshake at connection time with the remote modem when the communication speed of the two modems is different. Result Codes: ERROR On Return online to data mode Result Codes: ERROR AT command formats...

  • Page 62: P Select Pulse Dialing

    AT Commands AT command formats P Select pulse dialing This command configures the modem for pulse (non-touch- tone) dialing. Dialed digits are pulsed until a T command or dial modifier is received. Tone dial is the default setting. Qn Result code control Result codes are informational messages sent from the modem and displayed on your monitor.

  • Page 63: Wn Result Code Option

    Result Codes: ERROR Wn Result Code Option Result Codes: ERROR Xn Result code selection, call progress monitoring This command sets detection options for dial tones and busy signals, which is its primary function. However, it also enables or disables extended result codes. Command (default) AT command formats...

  • Page 64: Extended Result Codes

    AT Commands AT command formats Extended result codes Disabled: Enabled: Dial tone detect Disabled: The modem dials a call regardless of Enabled: The modem dials only upon detection of a Busy tone detect Disabled: The modem ignores any busy tones it Enabled: The modem monitors for busy tones.

  • Page 65: Zn Recall Stored Profile

    Zn Recall stored profile The modem performs a soft reset and restores (recalls) a configuration profile according to the parameter supplied. You can store two configuration profiles. If no parameter is specified, zero is assumed. Result Codes: ERROR &Cn Data Carrier Detect (DCD) control Data Carrier Detect is a signal from the modem to the computer indicating that a carrier signal is being received from a remote modem.

  • Page 66: Dn Data Terminal Ready (Dtr) Control

    AT Commands AT command formats &Dn Data Terminal Ready (DTR) control This command interprets how the modem responds to the state of the DTR signal and changes to the DTR signal. &D0 &D1 &D2 &D3 Result Codes: ERROR &F Load factory settings This command loads the configuration stored and programmed at the factory.

  • Page 67: Gn V.22Bis Guard Tone Control

    &Gn V.22bis guard tone control This command determines which guard tone, if any, to transmit while transmitting in the high band (answer mode). This command is only used in V.22 and V.22bis mode. This option is not used from North America and is for international use only.

  • Page 68: Pn Select Pulse Dial Make/Break Ratio

    AT Commands AT command formats &Pn Select Pulse Dial Make/Break Ratio &P0 &P1 &P2 Result Codes: ERROR &Tn Self-test commands These tests can help to isolate problems if you experience periodic data loss or random errors. &T0 &T1 Result Codes: CONNECT n=1 ERROR Selects 39% - 61% make/break ratio at 10...

  • Page 69: View Active Configuration And Stored Profile

    &V View active configuration and stored profile The modem maintains two stored profiles, in addition to the active profile. This command is used to display all three modem configurations, and any stored telephone numbers. &V &W Store current configuration This command saves the current (active) configuration (profile), including all S-Registers except S3, S4 and S5.

  • Page 70: Zn=X Store Telephone Number

    AT Commands AT command formats &Zn=x Store telephone number This command is used to store up to four dialing strings in the modem’s nonvolatile memory for later dialing. The format for the command is &Zn=“stored number” where n is the location 0-3 to which the number should be written.

  • Page 71: Qn Local Flow Control Selection

    Result Codes: ERROR Qn Local flow control selection Result Codes: ERROR \Vn Protocol result code Result Codes ERROR AT command formats V.42. MNP or Buffer (same as \N3). n = 0,1,2,3,4,5,7 Otherwise Disable flow control. XON/XOFF software flow control. RTS/CTS to DTE (default). n = 0,1,3 Otherwise Disable protocol result code appended to DCE...

  • Page 72: Cn Data Compression Control

    AT Commands AT command formats %Cn Data compression control This command determines the operation of V.42bis and MNP class 5 data compression. Online changes do not take effect until a disconnect occurs first. Result Codes: ERROR -V.90=<n> This command enables/disables V.90 and changes the downstream rate.

  • Page 73: Ds44 V.44 Data Compression Command

    +DS44 V.44 Data Compression Command This command configures the V.44 data compression direction used by the modem. It can also be used to display the current data compression configuration, and the supported <direction> parameter values. +DS44 = <direction> Valid <direction> values are as follows: AT command formats 32000 bps 33333 bps...

  • Page 74: Ms Command

    AT Commands AT command formats Result Codes: ERROR +DS44? This command displays the current V.44 compression configuration. +DS44=? This command displays the supported +DS44 <direction> parameter values. +MS Command This command can be used to set protocol and connection speed parameters for the modem. Instead of having to change multiple S registers, this single command produces the same effect.
  • Page 75 This command is used to set the various parameters described below: <carrier> The modem protocol. Valid values are: Value V32T V32B V22B Bell212A V23C Bell103 <automode> 0 If a <max_rate> value is specified, <automode> is automatically disabled. <min_rate> The minimum receive rate. Valid <min_rate>...
  • Page 76 AT Commands AT command formats <max_rate> The maximum receive rate. If set to 0, Example: +MS=V92,1,0,0 This sets the modulation to be V.92 and the speed negotiations to use automode. This is the modem default. Example: +MS=V90,0,0,45333 This will limit the maximum speed to 45,333 bps in V.90 mode.

  • Page 77: Pcw Command

    +PCW Command This command configures how the modem responds to a call waiting signal. The modem’s response is also determined by the current configuration of the +VCID caller ID command (See “+VCID Command” on page 79 command). You can also use the +PCW command to display the current call waiting configuration, and to display the supported <call waiting>...

  • Page 78: Pig Command

    AT Commands AT command formats +PIG Command This command enables or disables PCM upstream. You can also use this command to display the current PCM upstream configuration, and to display the supported +PIG command parameter values. +PIG=<value> Valid <value> parameter values are as follows: Result Codes: ERROR +PIG?

  • Page 79: Pmh Command

    +PMH Command This command enables or disables the Modem On Hold feature. You can also use this command to display the current Modem on Hold configuration, and to display the supported +PMH command parameter values. +PMH=<value> Valid <value> parameter values are as follows: Result Codes: ERROR +PMH?
  • Page 80 AT Commands AT command formats +VCID=<value> Valid <value> parameter values are as follows: Result Codes: ERROR +VCID? This command displays the current caller ID configuration. +VCID=? This command displays the supported +VCID <value> parameter values. Disables caller ID. This is the default. Enables caller ID, with formatted presentation.

  • Page 81: Chapter 5: S-Registers

    Chapter 5 S-Registers S-Registers contain the settings that determine how several functions of the internal modem operate, such as choosing how many times to let the telephone ring before the modem answers and how long to wait before it hangs up if a connection fails.

  • Page 82: S-Register Values

    S-Registers S-Register values S-Register values ❖ The format for displaying the value of an S-Register is: ATSn? where n is the register number. After you type in the register press ❖ The format for modifying the value of an S-Register is: ATSn=r where n is the register number, and r is the new register value.

  • Page 83: S2 At Escape Character (User-Defined)

    S2 AT escape character (user-defined) This register determines the ASCII value used for an escape sequence. The default is the + character. The escape sequence allows the modem to exit data mode and enter command mode when online. Values greater than 127 disable the escape sequence.

  • Page 84: S5 Command Line Editing Character (User Defined)

    S-Registers S-Register values S5 Command line editing character (user defined) This register sets the character recognized as a backspace and pertains to asynchronous transmission only. The modem will not recognize the backspace character if it is set to an ASCII value greater than 32.

  • Page 85: S7 Connection Completion Time-Out

    S7 Connection completion time-out This register sets the time, in seconds, that the modem must wait before hanging up because the carrier is not detected. The timer is started when the modem finishes dialing (originate), or goes off-hook (answer). In originate mode, the timer is reset upon detection of an answer tone if allowed by county restriction.

  • Page 86: S12 Escape Guard Time

    S-Registers S-Register values S12 Escape guard time This register sets the value (in 20 ms increments) for the required pause after the escape sequence (default 1 second). Range: Default: Units: S37 Dial line rate S37 = 0 (default) S37 = 1 S37 = 2 S37 = 3 S37 = 4...

  • Page 87: At Command Set Result Codes

    AT command set result codes The following table shows the result codes: Command Set Result Codes Table Result Code CONNECT RING NO CARRIER ERROR CONNECT 1200 EC NO DIAL TONE BUSY CONNECT 2400 EC CONNECT 4800 EC * EC appears only when the Extended Result Codes configuration option is enabled.
  • Page 88 S-Registers AT command set result codes Command Set Result Codes Table (Continued) Result Code CONNECT 9600 EC CONNECT 14400 EC CONNECT 19200 EC CONNECT 7200 EC CONNECT 12000 EC CONNECT 16800 EC CONNECT 300 EC CONNECT 21600 EC CONNECT 24000 EC CONNECT 26400 EC CONNECT 28800 EC CONNECT 31200 EC...
  • Page 89 Command Set Result Codes Table (Continued) Result Code CONNECT 57600 EC CONNECT 115200 EC* CONNECT 32000 EC CONNECT 34000 EC CONNECT 36000 EC CONNECT 38000 EC CONNECT 40000 EC CONNECT 42000 EC CONNECT 44000 EC CONNECT 46000 EC CONNECT 48000 EC CONNECT 50000 EC CONNECT 52000 EC CONNECT 54000 EC...
  • Page 90 S-Registers AT command set result codes Command Set Result Codes Table (Continued) Result Code CONNECT 56000 EC CONNECT 28000 EC* CONNECT 29333 EC* CONNECT 30666 EC* CONNECT 33333 EC* CONNECT 34666 EC* CONNECT 37333 EC* CONNECT 38666 EC* CONNECT 41333 EC* CONNECT 42666 EC* CONNECT 45333 EC* CONNECT 46666 EC*...
  • Page 91 Command Set Result Codes Table (Continued) Result Code CONNECT 54666 EC* * EC appears only when the Extended Result Codes configuration option is enabled. EC is replaced by one of the following symbols, depending upon the error control method used: V.44 - V.44 data compression with V.42 error control V.42bis - V.42 error control and V.42bis data compression V.42 - V.42 error control only...

  • Page 92: Chapter 6: Test Function

    Chapter 6 Test Function Normally, data communications are executed by connecting your computer and modem to those of a remote station with a communication line. If any errors or malfunctions are encountered, it is necessary to check whether the cause is in the local station, the remote station or the communication line.

  • Page 93: Testing Procedure

    Computer Local/analog/loopback test Testing procedure To conduct the loopback test: Enter the following AT commands to set the modem to normal mode: AT&F\N0 Receive OK Enter the following AT commands to select the local/ analog/loopback test: AT&T1 You are now in the online state. Enter characters from the keyboard as desired.
  • Page 94 Test Function Testing procedure Enter the escape code as follows to return to the command state from the online state. Receive OK. Enter the following AT commands to terminate the test: AT&T0 Receive OK.

  • Page 95: Chapter 7: Mnp And V.42

    Chapter 7 MNP and V.42 2 The internal modem has built-in protocols MNP (Microcom Networking Protocol) Class 4 and V.42 for error correction and MNP class 5 and V.42bis for data compression. Error-correction overview Telephone line noise, or electrical interference, can cause errors in data communication.

  • Page 96: Error Correction

    MNP and V.42 Operation modes The protocol of both modems must be the same. Therefore, if the remote modem supports only class 3 or below, the protocol for the remote modem will be used. If the remote modem does not use MNP, the communication will be made at the speed of the remote modem.

  • Page 97: Commands (\Nn)

    Commands (\ Nn) The following N modulation handshake commands are used to set the communication mode: \N0, \N1 \N5, \N7 For details, refer to Flow control In both normal mode and reliable mode, the buffers in the modem and its flow control function permit communication even if the speed is different between a personal computer and modem (serial port) or between modems (modem port).

  • Page 98: Serial Port Flow Control

    MNP and V.42 Flow control Computer Transmi Flow control Serial port flow control Serial port data flow is controlled by the modem in its communication with a personal computer. If the serial port speed is higher than the modem port speed, this control function sends a transmission halt request to the personal computer before the buffers in the modem are about to become full.

  • Page 99: Cts/Rts Two-Way Flow Control (Hardware)

    Since these two codes, XON and XOFF, are used as flow control characters, binary data that includes these two codes cannot be transmitted or received. CTS/RTS two-way flow control (hardware) Flow control is performed by turning on and off the control lines CTS (clear to send) and RTS (request to send) between the modem and the computer.

  • Page 100: Modem Port Flow Control

    MNP and V.42 Data compression Modem port flow control Modem port flow control refers to flow control between the modems of the local station and remote station. If data transmission from the modem under serial port flow control is interrupted because the computer cannot catch up with it, modem port flow control is applied to the remote modem so that transmitted data will not exceed buffer capacity.

  • Page 101: Appendix A: Specifications

    Appendix A Specifications This appendix summarizes the Toshiba internal modem’s technical specifications. Network control unit (NCU) Type of NCU Type of line Type of dialing Control command Monitor function General telephone line Pulse Tone AT commands EIA-578 commands Computer’s speaker...

  • Page 102: Communication Specifications

    Specifications Communication specifications Communication specifications Communication system Communication protocol Communication speed Transmitting level -10 dBm Data: Full duplex Fax: Half duplex Data: ITU-T-Rec V.21 / V.22 / V.22bis / V.32 / V.32bis / V.34 / 56K /V.90 / V.92 Bell 103/212A Fax: ITU-T-Rec...

  • Page 103: Appendix B: Communication Conditions

    Appendix B Communication Conditions Communication parameters Select communication parameters from the table below. Start (bit) Telephone line types This internal modem can be connected to 2-wire analog subscriber telephone lines (POTS lines) only. Data length Parity (bit) (bit) None Even None Stop (bit)

  • Page 104: Connectable Lines (2-Wire)

    Communication Conditions Dial modes Connectable lines (2-wire) ❖ Ordinary analog telephone lines with direct connection ❖ Corporate analog lines connected to a PBX ❖ Analog lines connected to a PBX, which, for example, provide dial tone when the handset is picked up and permit outgoing calls by dialing 9.

  • Page 105: Glossary

    Glossary Acronyms bps or BPS:Bits per Second COM1: Communications Port 1 (serial port) COM2: Communications Port 2 (serial port) CPU: Central Processing Unit FCC: Federal Communications Commission FTP: File Transfer Protocol GND: Ground HDD: Hard Disk Drive HTML: HyperText Markup Language I/O: Input/Output IRQ: Interrupt Request ISA: Industry Standard Architecture...
  • Page 106 Glossary LFB: Linear Frame Buffer LPT1: Line Printer Port 1 (parallel port) MB: Megabyte MIPS: Millions of Instructions per Second PBX: Private Branch Exchange PCI: Peripheral Component Interconnect PIO: Programmed Input/Output RFI: Radio Frequency Interference ROM: Read-Only Memory RTC: Real-Time Clock SIMM: Single Inline Memory Module SPB: Synchronous Pipeline Burst (cache) UART: Universal Asynchronous Receiver/Transmitter...
  • Page 107 American National Standards Institute (ANSI) character set: The set of characters available in Microsoft system (or other operating system). The character set includes letters, numbers, symbols and foreign language characters. American Standard Code for Information Interchange (ASCII): A set of 256 binary codes that represent the most commonly used letters, numbers and symbols.
  • Page 108 Glossary bits per second (BPS): A way of measuring the speed at which information is passed between two devices. This is the basic measure used in modem communications. This is similar, but not identical, to the baud rate. See also baud. buffer: An area of memory where information is held until it can be processed.
  • Page 109 character: Any letter, number or symbol you can use on the computer. Some characters are non-printing characters, such as a paragraph break in a word-processing program. A character occupies one byte of computer storage. Class 1: A standard for fax transmission. The Toshiba internal modem supports class 1.
  • Page 110 Glossary DAA: Data Access Arrangement is a circuit that isolates a device from phone lines. data: Information that a computer can process. The word “data” is actually plural for “datum,” meaning a single piece of information. data bits: A data communications parameter controlling the number of bits used to represent a character.
  • Page 111 DSR signal: This signal tells the personal computer whether the modem is ready for communication. DTR signal: This signal tells the modem whether the personal computer is ready for communication. duplex: The method used to transmit data in both directions between two devices.
  • Page 112 Glossary Flow control: Flow control ensures smooth data communication. If operating speed differs between the personal computer and modem or between your modem and a remote modem and if the remote station runs short of buffer capacity, a transmission halt request is sent from the receiver to the transmitter.
  • Page 113 input/output (I/O): Input and output are two of the three functions that computers perform (the other is processing). Input/Output describes the interrelated tasks of providing information to the computer and providing the results of processing to users. I/O devices include keyboards (input) and printers (output). A disk drive is both an input and an output device, since it can both provide information to the computer and receive information from the computer.
  • Page 114 Glossary Normal mode: Error correction is not made by MNP or V.42, but even if serial port speed is different from modem port speed, the buffers in the modem and its flow control function permit communication without changing their speeds. on line: A functional state in which a device is ready to receive or transmit information.
  • Page 115 Pulse dialing: A dialing method that uses pulses instead of tones to generate a telephone number. Generally associated with rotary dial phones, although some push-button phones can be used on pulse lines. Reliable mode: Reliable mode is for error-free communication by MNP or V.42.
  • Page 116 Glossary synchronous: Having a constant time interval between successive bits, characters or events. Synchronous data transmission requires both the sending and receiving devices to use special synchronizing characters to correct variations in timing between the devices. See also asynchronous. Test function: When normal communication is not possible, this function checks the modem, personal computer, and telephone lines to determine if they are normal.

  • Page 117: Index

    Index Numerics 56K technology 16 analog/loopback test 92 answering a call 20 AT command 52 AT command set result codes 87 AT commands answer command 52 Call Waiting 77 Caller ID enable/disable 79 communication standard setting data carrier detect 65 data compression control 72 data terminal ready (DTR) 66 dial a telephone number 53...
  • Page 118 Index select stored profile for hardware reset 69 select tone dialing 62 self-test commands 68 store current configuration 69 store telephone number 70 V.44 data compression 73 V.90 enable/disable 72 view active configuration and stored profile 69 call receiving 49 terminating 49 call cancelled error message 22 call history 25...
  • Page 119 hook control 55 icons definitions 14 internal modem communications protocols 17 connecting 45 connection procedures 44 disconnecting 46 load factory settings 66 local flow control selection 67, 71 loopback test 93 MNP protocol 95 modem connecting internal 44 flow control function 97 modem port 97 serial port 97 maximum connection speed 74...
  • Page 120 Index S-register values AT escape character 83 Comma pause time 85 Command line editing character Command line termination character 83 Connection completion time-out Dial line rate 86 DTMF dialing speed 85 Escape guard time 86 Response formatting character 83 Wait before dialing 84 store current configuration 69 store telephone number 70 telephone line...

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