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US Robotics 56 K SOFTMODEM - COMMAND REFERENCE REV 1 Command Reference Manual

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56K Softmodem
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R46.2021.00
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Summary of Contents for US Robotics 56 K SOFTMODEM - COMMAND REFERENCE REV 1

  • Page 1 56K Softmodem Command Reference R46.2021.00 rev 1 4/10...

  • Page 3: Table Of Contents

    56K Softmodem Command Reference Contents Introduction ..........1 Overview .
  • Page 4 56K Softmodem Command Reference \G<value>—Modem Port Flow Control ....... . 26 \J<value>—Adjust Bits/s Rate Control .
  • Page 5 56K Softmodem Command Reference +PCW=<call_waiting>—Call Waiting Enable ......56 +PIG=<value>—PCM Upstream Ignore ....... 57 +PMH=<value>—Modem On Hold Enable .
  • Page 6 56K Softmodem Command Reference...

  • Page 7: Introduction

    56K Softmodem Command Reference Introduction Overview The following reference manual specifies the command set for the 56K Softmodem. The 56K Softmodem supports a broad base of commands for data and FAX. The command set includes support for the basic data commands standardized by ITU- T recommendation V.250 (05/99), and class 1 FAX commands standardized by ITU-T recommendation T.31 (08/95).
  • Page 8 56K Softmodem Command Reference...

  • Page 9: At Command Conventions

    56K Softmodem Command Reference AT Command Conventions This document describes the AT commands and S registers supported in the USRobotics 56K Softmodem. Presentation format for each command has a standard layout consisting of the following: • A command title. • A general command description.

  • Page 10: Basic Syntax Commands

    56K Softmodem Command Reference Table 2-1: E<value> Commands Command Function Disables echo command. Enables echo command (default). Basic Syntax Commands Basic syntax commands use the following format: <command>[<parameter>] • • Where <command> is a single character or a group of characters that represent the command and <parameter>...

  • Page 11: S Register Conventions

    56K Softmodem Command Reference Test syntax: +<name>=? The modem responds to this command with a list of the supported parameter ranges. S Register Conventions S registers contain parameters used by the modem. The presentation format for an S register is similar to the format used for an AT command. Each S register has a standard layout consisting of the following: S register title.
  • Page 12 56K Softmodem Command Reference Table 2-2: Other Document Conventions Item Example Conventions Description AT Command &C<value> AT commands are all capitals followed by their parameter values in bold print. This document does not explicitly use the AT prefix when presenting com- mands.

  • Page 13: At Command Set

    56K Softmodem Command Reference AT Command Set AT commands are issued to the modem to control the modem’s operation and software configuration. The basic command syntax is as follows: • <command><parameter>. The <command> is a combination of the attention prefix (AT) followed by the AT command.

  • Page 14: A-Answer

    56K Softmodem Command Reference A—Answer This command instructs the 56K Softmodem to go off-hook and answer an incoming call. B<value>—Communication Standard Setting Use this command to select the communication standard used by the 56K Softmodem. Result codes: OK if <value> = 0—3, 15, 16. ERROR if <value>...
  • Page 15 56K Softmodem Command Reference sequence. The dial string (<dial string>, including modifiers and the telephone number) is entered after the D command. A dial string can be up to sixty characters long. Any digit or symbol may be dialed as touchtone digits. Characters such as spaces, hyphens, and parentheses are ignored by the modem and may be included in the dial string to enhance readability.

  • Page 16: H-Hook Control

    56K Softmodem Command Reference Table 3-4: E<value> Commands Command Function Disables echo command. Enables echo command (default). F<value>—On-Line Data Character Echo Command This command is supported to ensure compatibility with communications software that issues the F1 command. The F0 version of this command is not supported. This command was originally used to set echo features for the DTE.
  • Page 17 56K Softmodem Command Reference ERROR if <value> does not equal 0—11. Note:ITU-T Recommendation V.250 (05/99) standardized this command. However, the standard does not include the additional functionality added with the H1 command. TI<value> Commands Table 3-7: Command Function I0, I3 Returns modem identity string and driver version number.
  • Page 18 56K Softmodem Command Reference Transmit Frame Count Transmit Frame Error Count Receive Frame Count Receive Frame Error Count Retrain by Local Modem Retrain by Remote Modem Rate Renegotiation by Local Modem Rate Renegotiation by Remote Modem Call Termination Cause Robbed-Bit Signaling Digital Loss (dB) 06 Remote Server ID...
  • Page 19 56K Softmodem Command Reference ATI11 Command Results Table 3-8: Result Description Last Connection V.92, V.90, V.34, or V.32, depending on the type of connection negoti- ated. Initial Transmit Carrier Rate Initial upstream rate. Initial Receive Carrier Rate Initial downstream rate. Final Transmit Carrier Rate Current or final upstream rate.

  • Page 20: L-Speaker Volume

    56K Softmodem Command Reference L<value>—Speaker Volume Use this command to set the monitor speaker volume setting when the speaker is on. Result codes: OK if <value> = 0—3. ERROR if <value> does not equal 0—3. Table 3-9: L<value> Commands Command Function Low volume.

  • Page 21: O-Return To On-Line Data Mode

    56K Softmodem Command Reference N<value> Commands Table 3-11: Command Function When originating or answering, this is for handshake only at the communication standard specified by register S37 (see “S37—Dial Line Rate*” on page 90) and the B<value> (“B<value>—Communication Standard Setting” on page 8) command. When originating or answering, begin the handshake only at the communication standard specified by S37 and the B<value>...

  • Page 22: S=-S Register Control

    56K Softmodem Command Reference Result codes: OK if <value> = 0—1. ERROR if <value> does not equal 0—1. Q<value> Commands Table 3-13: Command Function Enables result codes (default). Disables result codes. S<register_number>=<value>—S Register Control Use this command to view or change an S-register. S-registers contain parameters used by the modem.

  • Page 23: W-Result Code Option

    56K Softmodem Command Reference Result codes: OK if <value> = 0—1. ERROR if <value> does not equal 0—1. Table 3-15: V<value> Commands Command Function Displays result codes as digits. Numerical mode. Displays result codes as text (default). Verbose mode. V<value> Result Code Formats Table 3-16: Command Result Code Format...

  • Page 24: Y-Long-Space Disconnect

    56K Softmodem Command Reference Table 3-18: X<value> Commands Command Description Busy detection is disabled; blind dialing (no dial tone detection) is enabled. The following result codes are supported: • OK • CONNECT • RING • NO CARRIER • ERROR Busy detection is disabled; blind dialing (no dial tone detection) is enabled. The following result codes are supported: •...

  • Page 25: B-V.32 Auto Retrain

    56K Softmodem Command Reference Result codes: OK if <value> = 0, 1. ERROR if <value> does not equal 0, 1. Table 3-20: Z<value> Commands Command Function Reset and restore stored profile 0. Reset and restore stored profile 1. &B<value>—V.32 Auto Retrain This command is supported to ensure compatibility with communications software that issues the B1 command.

  • Page 26: D-Data Terminal Ready (Dtr) Control

    56K Softmodem Command Reference Table 3-22: &C<value> Commands Command Function &C0 Modem ignores the state of the carrier from the remote modem. DCD remains on at all times. &C1 Modem turns on DCD when the remote modem’s carrier signal is detected and turns off DCD when the carrier signal is not detected (default).

  • Page 27: G-V.22 Bis Guard Tone Control

    56K Softmodem Command Reference Table 3-24: &F<value> Commands Command Function &F0 Restores factory default configuration. &G<guard tone>—V.22 bis Guard Tone Control Use this command to select which guard tone, if any, the modem will send while transmitting in the high band (answer mode). This command is only used in V.22 and V.22 bis mode.

  • Page 28: M-Asynchronous Communications Mode

    56K Softmodem Command Reference ERROR if <value> does not equal 0, 3, or 4. Table 3-26: &K<value> Commands Command Function &K0 Disables flow control. &K3 Enables RTS/CTS (hardware) flow control (default). &K4 Enables XON/XOFF flow control. &M<value>—Asynchronous Communications Mode This command is supported to ensure compatibility with communication software that issues the &M0 command.

  • Page 29: S-Data Set Ready (Dsr) Option

    56K Softmodem Command Reference asynchronous communication mode is to use the \N<error control mode> command. Result codes: OK if <value> = 0, 5, 6, 8, or 9. ERROR if <value> does not equal 0, 5, 6, 8, or 9. Table 3-29: &Q<value> Commands Command Function &Q0...

  • Page 30: V-Display Current Configuration

    56K Softmodem Command Reference Table 3-31: &T<value> Commands Command Function &T0 Abort. Terminates the test in progress. &T1 Initializes local analog loopback, V.56 Loop 3. If a connection exists when this command is issued, the modem hangs up. The modem displays the CONNECT <rate> message at the start of the test.

  • Page 31: W-Store Current Configuration

    56K Softmodem Command Reference B1 L2 M1 E1 N1 Q0 V1 W2 X1 Y0 &C1 &D2 &G0 &J0 &K3 &L0 &Q5 &S0 %C3 %E2 S00:002 S01:000 S02:043 S03:013 S04:010 S05:008 S06:003 S07:060 S08:002 S09:050 S10:014 S11:095 S12:050 S14:138 S18:000 S20:000 S21:048 S22:022 S23:008 S27:073 S28:160 S29:050 S30:000 S31:010 S32:010 S33:000 S35:000 S36:007 S37:000 S38:002 S39:003 S40:040 S41:107 S42:001 S43:001 S48:007 S49:027 S50:015 S51:095 S52:007 S53:047 S54:002 S55:035 S56:000 S57:000...

  • Page 32: A-Select Maximum Mnp Block Size

    56K Softmodem Command Reference dialing strings. The dial string may contain up to 34 characters. The ATDS=<storage location> command (see “D<dial string>—Dial” on page 8) dials using the stored string. Result codes: OK if <storage location> = 0—3. ERROR if <storage location> does not equal 0—3. \A<value>—Select Maximum MNP Block Size The modem will operate an MNP error corrected link using a maximum block size controlled by the \A parameter.

  • Page 33: J-Adjust Bits/S Rate Control

    56K Softmodem Command Reference control to the remote DCE. Result codes: OK if <value> = 0—1. ERROR if <value> does not equal 0—1. Table 3-34: \G<value> Commands Command Function The modem processes XON/XOFF flow control characters locally (default). The modem passes XON/XOFF flow control characters. \J<value>—Adjust Bits/s Rate Control Use this command to specify whether or not the negotiated connect speed of the modem forces the adjustment of the speed of the DTE to the modem’s speed.

  • Page 34: N-Select Error Control Mode

    56K Softmodem Command Reference Table 3-36: \K<value> Commands When Modem Is Operating in Data Transfer Mode Command Function \K0, \K2, K4 Enter on-line command mode. No break is sent to the remote modem. Clears data buffers and sends a break to the remote modem. Sends a break to the remote modem immediately.

  • Page 35: Q-Local Flow Control Selection

    56K Softmodem Command Reference Table 3-39: N<value> Commands Command Function Buffer mode. No error control (same as &Q6). Direct mode. MNP or disconnect mode. The modem attempts to connect using MNP 2—4 error control proce- dures. If this fails, the modem disconnects. This is also known as MNP reliable mode. V.42, MNP, or buffered (default).

  • Page 36: T

    56K Softmodem Command Reference Table 3-41: \R<value> Commands Command Functions Ring indicator is off after the telephone call is answered. \T<time delay>—Inactivity Timer Use this command to specify the delay time used by the inactivity timer. The delay time is the length of time in minutes that the modem waits during periods of inactivity before disconnecting.

  • Page 37: C-Data Compression Control

    56K Softmodem Command Reference blacklisted, failed, or delayed. The ERROR result code appears for countries that do not support blacklisting. %C<value>—Data Compression Control Use this command to enable or disable V.42 bis and MNP class 5 data compression. On-line changes do not take effect until a disconnect occurs. Result codes: OK if <value>...

  • Page 38: V90=-Enable/Disable V.90 Settings

    56K Softmodem Command Reference Result codes: OK if <value> = 0, 1. ERROR if <value> does not equal 0, 1. -C<value> Commands Table 3-46: Command Function Disabled (default). Enabled. -V90=<rate>—Enable/Disable V.90 Settings Result codes: OK if <rate> = 0—23. ERROR if <rate> does not equal 0—23. Table 3-47: -V90 Commands Command Function...

  • Page 39: A8E=,,,-V.8 And V.8 Bis Operation Controls

    56K Softmodem Command Reference Table 3-48: -V90=<rate> Equivalent Downstream Rates <rate> Value Downstream Rate <rate> Value Downstream Rate V.90 disabled. 41333 kbits/s. Auto rate (default). 42666 kbits/s. 28000 kbits/s. 44000 kbits/s. 29333 kbits/s. 45333 kbits/s. 30666 kbits/s. 46666 kbits/s. 32000 kbits/s. 48000 kbits/s.

  • Page 40: A8T=

    56K Softmodem Command Reference Table 3-49: Valid <v8o> Values Value Description Enables DCE-controlled V.8 origination negotiation (default). Enables DCE-controlled V.8 origination negotiation, issue +A8x indications. Table 3-50: Valid <v8a> Values Value Description Enables DCE-controlled V.8 answer negotiation (default). Enables DCE-controlled V.8 answer negotiation, issue +A8x indications. Table 3-51: Valid <v8cf>...
  • Page 41 56K Softmodem Command Reference Result codes: OK if <signal> = 0—10 and <sig_en> = 0, 1 and <msg_en> = 0, 1 and <supp_delay> = 0,1. ERROR if <signal> does not equal 0—10 or <sig_en> does not equal 0, 1 or <msg_en>...

  • Page 42: A8T=

    56K Softmodem Command Reference Table 3-57: Valid <supp_delay> Values Value Meaning No delay inserted (default). Inserts a 1.5 s delay between transmitted V.8 bis signal and the subsequent V.8 bis message. +A8T=<sig- nal>,<1st_message>,<2nd_message>,<sig_en>,<msg_en>,<supp_delay >—Send V.8 bis +A8T Extended Syntax Commands Table 3-58: Command Description...

  • Page 43: Data Compression

    56K Softmodem Command Reference Table 3-60: +DR Data Compression Reporting Intermediate Result Codes Result Code Description +DR: NONE Data compression is not in use. +DR: V42B V.42 bis is in use in both directions. +DR: V42B RD V.42 bis is in use in the receive direction. +DR: V42B TD V.42 bis is in use in the transmit direction.

  • Page 44: Ds44=,,

    56K Softmodem Command Reference Table 3-62: Valid <direction> Values Value Meaning Modem negotiates no V.42 bis compression. Modem negotiates transmit only V.42 bis compression. Modem negotiates receive only V.42 bis decompression. Modem accepts V.42 bis compression in both or either direction (default). The <compression_negotiation>...

  • Page 45: Ds44=,,

    56K Softmodem Command Reference equal 512, 1024, 2048, or <max_codewords_rx> does not equal 512, 1024, 2048, or <max_history_tx> does not equal 1024, 2048, 4096, 1536, 3072, 6144, or <max_history_rx> does not equal 1024, 2048, 4096, 1536, 3072, 6144. The <direction> parameter sets which directions use the compression method. The 56K Softmodem uses compression in one or both directions.

  • Page 46: Operation

    56K Softmodem Command Reference Table 3-67: Valid <max_history_tx> and <max_history_rx> Values Value Meaning 6144 Default <max_history_tx> and <max_history_rx> value. 1024, 2048, 4096, 1536, 3072, 6144 Valid maximum transmit and receive history buffer sizes. Table 3-68: +DS44 Extended Syntax Commands Command Description +DS44=<direction>,<0>,<0><max_code_ Configures modem V.44 compression method.

  • Page 47: Efram=,-Frame Length

    56K Softmodem Command Reference mation on the standardized version of this command, refer to ITU-T recommendation V.250. Valid <timed> Values Table 3-70: Value Meaning V.42 L-SIGNAL does not indicate break signal length. V.42 L-SIGNAL indicates break signal length. Table 3-71: Valid <default_length> Values Value Meaning Modem does not deliver a break to the DTE.

  • Page 48: Er=-Error Control Reporting

    56K Softmodem Command Reference Table 3-73: +EFRAM Extended Syntax Commands Command Description +EFRAM=<value 1>,<value 2> Sets the link-layer frame fields size. +EFRAM? Displays the current maximum link-layer frame field size settings. +EFRAM=? Displays the supported maximum frame sizes. +ER=<value>—Error Control Reporting Use this command to turn on or turn off the error control report.

  • Page 49: Es=,,-Error Control Selection

    56K Softmodem Command Reference Table 3-74: +ER Control Reporting Commands Command Function +ER=0 This command enables error control report (default). +ER=1 This command disables error control report. Table 3-75: +ER Error Control Reporting Intermediate Result Codes Result Code Description +ER: NONE Data compression not in use.

  • Page 50: Esr=-Selective Repeat

    56K Softmodem Command Reference Table 3-77: +ES Combinations Combination Mode +ES=1,0,1 Buffered mode. +ES=0,1,0 Direct mode. +ES=4,4,6 MNP or disconnect mode. +ES=3,3,5 LAPM or disconnect mode. +ES=4,0,6 MNP or buffered mode. +ES=3,0,2 LAPM, MNP, or buffered mode (default). +ES=2,0,2 LAPM or buffered mode. +ES=3,2,4 LAPM, MNP, or disconnect mode.

  • Page 51: Etbm=,,-Call Termination Buffer Management

    56K Softmodem Command Reference Table 3-79: +ESR Parameter Values Command Description Enables the selective reject mode. Disables the selective reject mode. Table 3-80: +ESR Extended Syntax Commands Command Description +ESR=<value> Turns on or turns off the selective reject mode. +ESR? Displays the current settings for the selective reject mode.

  • Page 52: Ewind=,-Window Size

    56K Softmodem Command Reference Table 3-81: <pending_TD> Parameter Values Value Description Modem discards all buffered data immediately and disconnects. Modem ignores the timer and attempts to deliver the data until it is acknowledged. If the remote DCE disconnects, discard the remaining data. Modem attempts to deliver the data until the data is acknowledged.

  • Page 53: Fclass=-Service Class Indication

    56K Softmodem Command Reference Table 3-85: +EWIND Extended Syntax Commands Command Description +EWIND=<value_1>,<value_2> Sets the maximum link-layer window size. +EWIND? Displays the current maximum link-layer window size. +EWIND=? Displays the supported maximum link-layer window sizes. +FCLASS=<value>—Service Class Indication Use this command to set the modem service class. The service class determines if the modem is in data, FAX.

  • Page 54: Gci=-Country Of Installation

    56K Softmodem Command Reference Table 3-88: +GCAP Responses +GCAP Responses* DCE Control Standard Description +FCLASS T.class 1, +F Class 1 FAX DCE control +M commands Modulation control: • +MS • +MR +E commands Error control: • +ES • +EB • +ER • +EFCS •...

  • Page 55: Gmm-Modem Identification

    56K Softmodem Command Reference Table 3-90: +GMI Extended Syntax Commands Command Description +GMI, +GMI? Display modem manufacturer and generates an OK result code. +GMI=? Display modem manufacturer and generates an ERROR result code. +GMM—Modem Identification This command is supported to ensure compatibility with communication software that issues the +GMM command.

  • Page 56: Gsn-Request Product Serial Number Identification

    56K Softmodem Command Reference ERROR when using the +GOI=? or +GOI? syntax. Table 3-93: +GOI Extended Syntax Commands Command Description +GOI Displays the ISO registration object identifier followed by the OK result code. +GOI=?, +GOI? Displays the ISO registration object identifier followed by the ERROR result code. +GSN—Request Product Serial Number Identification This command returns the product serial number.

  • Page 57: Ifc=, -Dte-Dce Local Flow Control

    56K Softmodem Command Reference Table 3-95: +IDSR Values Commands Description +IDSR=0 DSR is always on. +IDSR=1 DSR functions as defined in ITU-T recommendation V.24. Table 3-96: +IDSR Extended Syntax Commands Command Description +IDSR=<value> Sets how the modem manages DSR. +IDSR? Displays the current parameter value.

  • Page 58: Ilrr=-Dte-Dce Local Rate Reporting

    56K Softmodem Command Reference Table 3-98: +IFC Extended Syntax Commands Command Description +IFC=<DCE by DTE>,<DTE by DCE> Sets the local flow control method. +IFC? Displays the current local flow control settings. +IFC=? Displays the supported local flow control parameter settings. +ILRR=<value>—DTE-DCE Local Rate Reporting Use this command to display or hide the local rate report result code.

  • Page 59: Ma=,

    56K Softmodem Command Reference Table 3-101: +IPR Commands Command DTE Rate +IPR=0 Automatic rate detection (default). +IPR=300 300 bits/s. +IPR=1200 1200bits/s. +IPR=2400 2400 bits/s. +IPR=4800 4800 bits/s. +IPR=9600 9600 bits/s. +IPR=19200 19200 bits/s +IPR=38400 38400 bits/s. +IPR=57600 57600 bits/s. +IPR=115200 115200 bits/s.

  • Page 60: Mr=-Modulation Reporting Control

    56K Softmodem Command Reference ERROR if <carrier x> does not equal V90, V34, V32T, V32B, V32, V22B, V22, Bell212A, V23C, V21, Bell103 or <carrier x> is greater than the carrier set by the +MS command. Table 3-103: +MA Extended Syntax Commands Command Description +MA=<carrier 1>...

  • Page 61: Ms=,,,-Modulation Selection

    56K Softmodem Command Reference Table 3-104: +MR Commands Command Function +MR=0 Enables the modulation report (default). +MR=1 Disables the modulation report. +MR Extended Syntax Commands Table 3-105: Command Description +MR=<value> Select or deselect transmission of the modulation result codes. +MR? Display the current status of the modulation report result code.
  • Page 62 56K Softmodem Command Reference Table 3-106: Valid <carrier> Values Value Meaning V.92 (default) V.90 V.34 V32T V.32ter V32B V.32 bis V.32 V22B V.22 bis V.22 V.22 Bell212A Bell 212A* V23C V.23, constant carrier, asymmetric FDM Bell103 Bell 103* Note:* The +MS command was standardized by ITU-T recommendation V.250. However, the standard command does not include the additional functionality provided by the Bell212A and Bell103 values of the <carrier>...

  • Page 63: Msc=-Seamless Rate Change Enable

    56K Softmodem Command Reference Table 3-108: Valid <max_rate> Range Value Meaning Determined by modulation selected in <carrier> (default). 300—57333 Value limited by modulation selected in <carrier>. Table 3-109: Valid <max_rate> for each <carrier> Value Meaning 28000 bits/s—57333 bits/s in steps of 1333 bits/s. 28000 bits/s—57333 bits/s in steps of 1333 bits/s.

  • Page 64: Pcw=-Call Waiting Enable

    56K Softmodem Command Reference Table 3-111: +MSC Commands Command Function +MSC=0 Disables V.34 seamless rate change. +MSC=1 Enables V.34 seamless rate change (default). Table 3-112: +MSC Extended Syntax Commands Command Description +MSC=<value> Enable or disable V.34 seamless rate changes. +MSC? Display the current status of the V.34 seamless rate change parameter.

  • Page 65: Pmh=-Modem On Hold Enable

    56K Softmodem Command Reference Result codes: OK if <value> = 0, 1. ERROR if <value> does not equal 0, 1. Table 3-115: Valid +PIG Commands Command Meaning +PIG=0 Enable PCM upstream. +PIG=1 Disable PCM upstream (default). Table 3-116: +PIG Extended Syntax Commands Value Meaning +PIG=<value>...

  • Page 66: Pmhf-Modem On Hold Hook Flash

    56K Softmodem Command Reference Table 3-117: Valid +PMH Parameter Values Value Meaning +PMH=0 Enables modem on hold ( default). +PMH=1 Disables modem on hold. Table 3-118: +PMH Extended Syntax Commands Value Meaning +PMH=<value> Enable or disable modem on hold. +PMH? Display the current state of the +PMH command.
  • Page 67 56K Softmodem Command Reference +PMHT command, by default, the modem on hold request is denied. This command also sets the modem on hold timer. The modem on hold timer sets the amount of time the modem will remain on hold waiting for the requesting modem to return to the line.

  • Page 68: Vcid=-Caller Id

    56K Softmodem Command Reference Table 3-120: +PMHT Extended Syntax Commands Value Meaning +PMHT=<value> Configure the 56K Softmodem response to a modem on hold request. +PMHT? Display the current modem on hold settings. +PMHT=? Display the valid +PMHT parameter values. +VCID=<value>—Caller ID Use this command to enable or disable caller ID.

  • Page 69: Fax Commands

    56K Softmodem Command Reference Fax Commands FAX Commands The 56K Softmodem supports FAX commands conforming to EIA* standard 578 and ITU-T recommendation T.31 (08/95) which outlines class 1 asynchronous facsimile under DCE control. The nature of FAX communication is for a facsimile machine to transmit a graphic image to a receiving facsimile machine.

  • Page 70: Fclass=1-Enter Class 1 Fax Mode

    56K Softmodem Command Reference Table 4-1: +FAA Commands Command Function +FAA=0 The DCE will answer only as a class 1 FAX device. No automatic switching of service class will occur based on the calling device type (default). +FAA=1 The DCE can answer and automatically determine whether to answer as a facsimile DCE or as a data modem.

  • Page 71: Fmr?-Version/Revision Information

    56K Softmodem Command Reference Table 4-4: +FMM Extended Syntax Command Description +FMM, +FMM? Displays the modem product identification. +FMR?—Version/Revision Information This command returns the modem version code. Result codes: This command always yields an OK result code. • Table 4-5: +FMR Extended Syntax Command Description +FMR, +FMR?

  • Page 72: Frh=-Receive Hdlc Data With Carrier

    56K Softmodem Command Reference Table 4-7: +FPR Extended Syntax DTE Command Description +FPR=<value> Does not perform any particular action in soft modem based systems. +FPR? Does not perform any particular action in soft modem based systems. +FRH=<mod>—Receive HDLC Data with <mod> Carrier Use the +FRH command to instruct the modem to receive data framed in the HDLC protocol at the modulation defined by Table 4-8: +FRH Commands on page Result codes:...

  • Page 73: Frm=-Receive Data

    56K Softmodem Command Reference +FRH Commands Table 4-8: Command Modulation Speed +FRH=3 V.21 channel 2. 300 bits/s. +FRH=24 V.27ter. 2400 bits/s. +FRH=48 V.27ter. 4800 bits/s. +FRH=72 V.29. 7200 bits/s. +FRH=96 V.29. 9600 bits/s. +FRH=73 V.17. 7200 bits/s. +FRH=74 V.17 (short train). 7200 bits/s.

  • Page 74: Frs=-Receive Silence

    56K Softmodem Command Reference +FRM Commands Table 4-10: Command Modulation Speed +FRM=3 V.21 channel 2. 300 bits/s. +FRM=24 V.27ter. 2400 bits/s. +FRM=48 V.27ter. 4800 bits/s. +FRM=72 V.29. 7200 bits/s. +FRM=96 V.29. 9600 bits/s. +FRM=73 V.17. 7200 bits/s. +FRM=74 V.17 (short train). 7200 bits/s.

  • Page 75: Ftm=-Transmit Fax Data With Carrier

    56K Softmodem Command Reference Result codes: CONNECT if <mod> = 3, 24, 48, 72—74, 96—98, 121, 122, 145, 146 and the connection is established. This is an intermediate result code. OK if <mod> = 3, 24, 48, 72—74, 96—98, 121, 122, 145, 146 and the connection is established.

  • Page 76: Fts=-Transmission Silence

    56K Softmodem Command Reference OK if <mod> = 3, 24, 48, 72—74, 96—98, 121, 122, 145, 146 and the connection is established. This is a final result code. ERROR if <mod> does not equal 3, 24, 48, 72—74, 96—98, 121, 122, 145, 146 or the connection is not established.

  • Page 77: Test And Debug At Command

    56K Softmodem Command Reference Test and Debug AT Command The following command is used for testing and debugging only. It is not meant for general use. #UD—Unimodem Diagnostics This command is defined by Microsoft ’s* unimodem diagnostics command specification. The 56K Softmodem implements a subset of the parameters in that specification.
  • Page 78 56K Softmodem Command Reference * Microsoft is a registered trademark of Microsoft Corporation. - 70...
  • Page 79 56K Softmodem Command Reference Table 4-16: #UD Last Call Status Report Format * Refers to Table 1 in the Microsoft specification. Note: Value(s) Required Definition Implemented 2 digits Diagnostic command specification revision number, digit.digit. Call setup result code. Table 4- 17: Call Setup Result...
  • Page 80 56K Softmodem Command Reference Reserved for modulation setup and training reports — — — (see note 5*). — Note 6* Transmit carrier negotiation result. Table 4- 18: gstn- Modula- tionSche meAc- tive from 3.7.2/ V.58 on page 75 Note 6* Receive carrier negotiation result.
  • Page 81 56K Softmodem Command Reference 2 digits 0—FF Carrier retrain requests granted. 4 digits 0— Final transmit carrier rate. FA00 4 digits 0— Final receive carrier rate. FA00 Reserved. — — — — 0—2 Protocol negotiation result (see note 7*). Table 4- 19: error- Control Active...
  • Page 82 56K Softmodem Command Reference 8 digits 0— Transmit characters sent from DTE (see note 8*). — FFFFFF 8 digits 0— Receive characters sent to DTE (see note 8*). — FFFFFF 8 digits 0—FFFF Transmit characters lost (data overrun errors from —...
  • Page 83 56K Softmodem Command Reference Note:* Refers to notes or tables in the Microsoft specification. Table 4-17: Call Setup Result Codes Note:* Refers to Table 2 in the Microsoft specification. Code Definition Implemented No previous call (modem log has been cleared since any previous call). No dial tone detected.
  • Page 84 56K Softmodem Command Reference V.32. V.32 bis. — V.34. V.34 HD. — V.pcm (asymmetric). — V.pcm (symmetric). — E–7F Reserved (V.58). — — V.FC. — V.32terbo. — 80–FF Reserved for mfgs. — - 76...
  • Page 85 56K Softmodem Command Reference Table 4-19: errorControl Active from 3.5.2/V.58 * Refers to Table 7 in the Microsoft specification. Note: Value Description Implemented Disable/none. V.42 LAPM. V.42 alternative protocol (MNP). 3—7F Reserved (V.58). — MNP Class 10. — Enhanced cellular protocol. —...
  • Page 86 56K Softmodem Command Reference Table 4-22: callCleared Codes from 3.6.4/V.58-1994 Note:callCleared indicates that the DCE has gone on-hook and that the previously existing network con- nection has been cleared. These values are hexadecimal, converted from decimal in V.58. Refer to Table 10 in the Microsoft specification.
  • Page 87 56K Softmodem Command Reference EngagedTone. — — Value Description Notes Implemented LongSpaceDisconnect. — — CarrierLost. Signal converter. TrainingFailed. — NoModulationinCommon. — — RetrainFailed. — RetrainAttemptCountExceeded. — — GstnCleardownReceived. — — FAXDetected. — — InTestMode. Test. — IntrusiveSelfTestInitiated. — — AnyKeyAbort. Call control.
  • Page 88 56K Softmodem Command Reference - 80...

  • Page 89: Result Codes

    56K Softmodem Command Reference Result Codes The 56K Softmodem AT command handler responds to commands from the caller and to activity on the line via result codes. Table 5-1: presents a summary of these result codes. Two forms of each result code are available. The long-form, or verbose, response is given when V1 is selected, and the short-form, numeric response is given when V0 is selected.
  • Page 90 56K Softmodem Command Reference Result Code Numeric Description Code CONNECT 31200 EC* Connection at 31200 bits/s. CONNECT 33600 EC* Connection at 33600 bits/s. CONNECT 38400 EC* Connection at 38400 bits/s (DTE rate). CONNECT 57600 EC* Connection at 57600 bits/s (DTE rate). CONNECT 115200 Connection at 115200 bits/s (DTE rate).
  • Page 91 56K Softmodem Command Reference Result Code Numeric Description Code CONNECT 46666 EC* Connection at 46666 bits/s. CONNECT 49333 EC* Connection at 49333 bits/s. CONNECT 50666 EC* Connection at 50666 bits/s. CONNECT 53333 EC* Connection at 53333 bits/s. CONNECT 54666 EC* Connection at 54666 bits/s.

  • Page 92: S-Registers

    56K Softmodem Command Reference S-Registers The current setting of each S-register may be displayed by the S<register number>? command. There are two forms for this command. Table 5-2: S<register number> Extended Syntax Syntax Function S<register_number>? Displays register contents. S<register_number>=<value>* Sets the contents of the register to <value>. Note:* Some registers are read only and are not affected by the S<register number>=<value>...
  • Page 93 56K Softmodem Command Reference Table 5-3: S-Register Summary Note: * Values presented in decimal except where noted. Register Description Range Base Unit Default* Auto answer ring number. 0—255 Rings 0† Ring counter. 0—255 Rings AT escape character (user defined). 0—255 ASCII 43(2Bh) Carriage return character.

  • Page 94: S-Register Definitions

    56K Softmodem Command Reference DTMF transmit attenuation level for 0—25 high DTMF group. Note:† Values are country-specific. S-Register Definitions S0—Auto-Answer Ring Number This register determines the number of rings the modem will count before automatically answering a call. The user can disable autoanswer by entering zero. When autoanswer is disabled, modem can answer only with the A command.

  • Page 95: S4-Line Feed Character (User-Defined)

    56K Softmodem Command Reference Default: 13 (carriage return). Base Unit: ASCII. S4—Line Feed Character (User-Defined) Use this register to set the ASCII value used as the line feed character. The 56K Softmodem uses a line feed character in command mode when it responding to the computer.

  • Page 96: S7-Wait Time For Carrier

    56K Softmodem Command Reference Base Unit: 1 s. S7—Wait Time for Carrier S7 sets the length of time (in seconds) that the modem will wait for a carrier before hanging up. The timer starts when the 56K Softmodem finishes dialing (originate) or two seconds after going off-hook (answer).

  • Page 97: S20-Sync Mode Underrun Fill Character

    56K Softmodem Command Reference S20—Sync Mode Underrun Fill Character Specifies the character that will be sent in sync mode when there is not enough valid data available. Range: 0 to 255. Default: 0. S21—V.24/General Bit-Mapped Options Status S21 indicates the status of command options. Only bits 3, 4, and 5 are used; they are read-only.

  • Page 98: S36-Lapm Failure Control

    56K Softmodem Command Reference Base Unit: 10 min. S36—LAPM Failure Control Default: 7 (00000111b). • Description Value 0—2 Action upon LAPM failure. If S48 = 128, 0 = The 56K Softmodem disconnects. the fallback options are initiated immedi- ately after establishing the data connec- 1 = The 56K Softmodem stays on-line and a normal tion.

  • Page 99: S48-Lapm Error Control And Feature Negotiation

    56K Softmodem Command Reference Table 5-5: Table 152. Register S37 Values Value Rate Value Rate Auto rate (default). 12000 bits/s. Reserved. 14400 bits/s. 1200/75 bits/s (V.23). 16800 bits/s. 300 bits/s. 19200 bits/s. Reserved. 21600 bits/s. 1200 bits/s. 24000 bits/s. 2400 bits/s. 26400 bits/s.

  • Page 100: S54-Blind Dialing Delay

    56K Softmodem Command Reference Table 5-7: Table 154. Register S36 and S48 Configuration Settings Register S36 Settings S48 = 7 S48 = 128 S36 = 0, 2 LAPM or hang-up. Do not use. S36 = 1, 3 LAPM or asynchronous. Asynchronous.

  • Page 101: S94-Dtmf Transmit Level For High Dtmf Group

    56K Softmodem Command Reference Default: 6 (–6 dBm transmit level). Base Unit: –1 dBm transmit level. S94—DTMF Transmit Level for High DTMF Group This register has a dual purpose: When S94 is zero, then S93 controls the overall DTMF transmit level, with the twist between DTMF groups fixed at 2 dB.

  • Page 102: At Command Cross Reference Tables

    56K Softmodem Command Reference AT Command Cross Reference Tables Table 5-8: Data and General Commands Command Description Reference* Repeat last command. — Answer. V.250 (05/99) Communication standard setting. — Carrier control. — Dial. V.250 (05/99) Echo command. V.250 (05/99) On-line data character echo command. —...
  • Page 103 56K Softmodem Command Reference &M Asynchronous communications mode. — &P Pulse dial make-to-break ratio selection. — &Q Asynchronous communications mode. — &S Data set ready (DSR) option. — &T Self-test commands. — &V Display active configuration. — &W Store current configuration. —...
  • Page 104 56K Softmodem Command Reference +EFRAM Frame length. V.250 (05/99) Error control reporting. — Error control selection. V.250 (05/99) +ESR Selective repeat. V.250 (05/99) +ETBM Call termination buffer management. V.250 (05/99) +FCLASS Service class indicator. V.253 (02/98) +GCI Country of installation. V.250 (05/99) +GMI Manufacturer identification.
  • Page 105 56K Softmodem Command Reference Table 5-9: FAX Class 1 Commands Summary Command Function Reference* +FAA Set DCE adaptive answer mode. — +FCLASS Service class indicator. T.31 (08/95) +FMI Manufacturer identification. T.31 (08/95) +FMM Product identification. T.31 (08/95) +FMR Version/revision information. T.31 (08/95) +FPR Set DTE-DCE FAX port rate.
  • Page 106 56K Softmodem Command Reference Table 5-10: Table 158. T.35 Country Code Table TAPI Code Country AT+GCI Code T.35 (Hex) AT%T19 code (Decimal) Europe 0xFB 0x2A Argentina 0x07 0x33 Australia 0x09 0x01 Austria 0x0A 0x0F Azerbaijan 0xF7 0x55 Bangladesh 0x0D 0x4C Barbados 0x0E 0x46...
  • Page 107 56K Softmodem Command Reference Iceland 0x52 0x2E India 0x53 0x1E Indonesia 0x54 0x17 Ireland 0x57 0x1A Israel 0x58 0x30 Italy 0x59 0x08 Japan 0x00 0x10 Jordan 0x5E 0x56 Korea 0x61 0x12 Kuwait 0x62 0x48 Latvia 0xF8 0x52 Lebanon 0x64 0x4D Liechtenstein 0x68 0x42...
  • Page 108 56K Softmodem Command Reference Russia none 0x2F Saudi Arabia 0x98 0x31 Singapore 0x9C 0x14 Slovakia 0xFC 0x27 Slovenia 0xFD 0x26 South Africa 0x9F 0x24 Spain 0xA0 0x0B Sri Lanka 0xA1 0x4A Sweden 0xA5 0x0C Switzerland 0xA6 0x0D Taiwan 0xFE 0x15 Thailand 0xA9 0x16...

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