AT Commands for SmartSCM, SmartACF, SmartACFL, and SC56D Modems Reference Manual Conexant Proprietary Information Doc. No.
AT Commands Reference Manual Revision Record Revision 100722B 100722A Date 3/20/2001 11/2/2000 Comments Rev. B release. Supersedes 100722A. Initial release. © 2000, 2001 Conexant Systems, Inc. All Rights Reserved. Information in this document is provided in connection with Conexant Systems, Inc. (“Conexant”) products. These materials are provided by Conexant as a service to its customers and may be used for informational purposes only.
AT Commands Reference Manual Contents Tables............................................................................................................................................................ xi Figures ......................................................................................................................................................... xii 1 Introduction .............................................................................................................................
AT Commands Reference Manual 2.4.5 Additional Syntax Rules...............................................................................................................................2-7 Concatenating Commands after Extended Syntax Commands..............................................................2-7 2.5 2.6 2.7 Concatenating Commands after Basic Format Commands ...................................................................2-8 Issuing Commands .................................................
AT Commands Reference Manual &K - Flow Control ..............................................................................................................................3-24 &M - Asynchronous/Synchronous Mode Selection............................................................................3-25 &Q - Sync/Async Mode......................................................................................................................3-26 &R - RTS/CTS Option ..............................................
AT Commands Reference Manual 3.2.6 Data Compression Commands ..................................................................................................................3-67 +DS - Data Compression ...................................................................................................................3-67 +DS44 - V.44 Compression Select .....................................................................................................3-68 +DR - Data Compression Reporting..................
AT Commands Reference Manual S10 - Lost Carrier To Hang Up Delay ...............................................................................................3-101 S11 - DTMF Tone Duration ..............................................................................................................3-101 S12 - Escape Prompt Delay (EPD) ...................................................................................................3-102 S14 - General Bit Mapped Options Status ............................
AT Commands Reference Manual 4.2 4.1.4 Fax Origination ............................................................................................................................................4-3 4.1.5 Fax Answering .............................................................................................................................................4-3 4.1.6 Fax Control Transmission ...................................................................................................................
AT Commands Reference Manual 5.2 5.3 Service Class 2 Identification and Selection.................................................................................................................5-5 5.2.1 +FMFR? - Request Manufacturer Identification............................................................................................5-5 5.2.2 +FMDL? - Identify Product Model................................................................................................................5-5 5.2.
AT Commands Reference Manual 5.6 6 5.5.6 +FPTS= - Page Transfer Status..................................................................................................................5-21 5.5.7 +FCQ - Copy Quality Checking ...................................................................................................................5-21 5.5.8 +FPHCTO - DTE Phase C Response Time-out ............................................................................................5-21 5.5.9 +FAXERR - T.
AT Commands Reference Manual Tables Table 3-1. Upload Messages..........................................................................................................................................3-15 Table 3-2. Result Codes.................................................................................................................................................3-20 Table 3-3. +MS Command Supported Rates...............................................................................................
AT Commands Reference Manual Figures Figure 5-1. T.30 Session Parameter Relationships ........................................................................................................
AT Commands Reference Manual 1 Introduction 1.1 Overview This manual describes the host command and responses for the following Conexant modem families: SmartSCM™ Modem Device Set SmartACF™ Modem Device Set SmartACFL™ Modem Device Set SC56D Modem Device The commands and responses are implemented in controller firmware for specific modem models. Additional configuration and implementation information is available in release notes and/or readme files that accompany product firmware release.
AT Commands Reference Manual 1.1.4 ConfigurACE II for Windows Utility Program The PC-based ConfigurACE II for Windows utility program allows the OEM to customize SmartACF and SmartACFL modem firmware to suit specific application and country requirements.
AT Commands Reference Manual 2 Syntax and Procedures The command and response syntax and procedures generally conform to referenced recommendations and standards. Since these recommendations and standards describe characteristics universal to a large installed base of modems to a maximum degree, there may be syntax and procedural differences due to extensions and behavioral differences in implemented commands, parameters, and responses beyond that described in these recommendations and standards.
AT Commands Reference Manual 2.2.2 Command Line Editing The character defined by parameter S5 (default, BS) is interpreted as a request from the DTE to the modem to delete the previous character. Any control characters (IA5 0/0 through 1/15, inclusive) that remain in the command line after receipt of the termination character are ignored by the modem.
AT Commands Reference Manual where is either a single character, or the "&" character followed by a single character per V.250. In addition, can be the "%" character followed by a single character, the "*" character followed by a single character, or the "^" character followed by a single character. may be a string of one or more characters from "0" through "9" representing a decimal integer value. Commands that expect a are noted in the description of the command.
AT Commands Reference Manual 2.4 Extended Syntax Commands 2.4.1 Command Naming Rules Both actions and parameters have names, which are used in the related commands. Names always begin with the character "+". Following the "+", from one to 16 additional characters appear in the command name. These characters will be selected from the following set: A through Z (IA5 4/1 through 5/10) 0 through 9 (IA5 3/0 through 3/9) ! (IA5 2/1) % (IA5 2/5) - (IA5 2/13) .
AT Commands Reference Manual String Constants String constants consist of a sequence of displayable IA5 characters, each in the range from 2/0 to 7/15, inclusive, except for the characters ‘"’ (IA5 2/2) and "\" (IA5 5/12). String constants are bounded at the beginning and end by the double-quote character (‘"’, IA5 2/2). Any character value may be included in the string by representing it as a backslash ("\") character followed by two hexadecimal digits.
AT Commands Reference Manual The following syntax is used for actions that have one subparameter: +[=] The following syntax is used for actions that have two or more subparameters: +[=] For actions that accept subparameters, if all subparameters are defined as being optional, and the default values for all subparameters are satisfactory, the data terminal equipment (DTE) may use the first syntax above (i.e.
AT Commands Reference Manual Parameter Set Command Syntax The definition of the parameter indicates, for each value, whether the specification of that value is mandatory or optional. For optional values, the definition indicates the assumed (default) value if none is specified; the assumed value may be either a previous value (i.e., the value of an omitted subparameter retains its previous value), or a fixed value (e.g., the value of an omitted subparameter is assumed to be zero).
AT Commands Reference Manual The semicolon is not necessary when the extended syntax command is the last command on the command line. Concatenating Commands after Basic Format Commands Extended syntax commands may appear on the same command line after a basic syntax command without a separator, in the same manner as concatenation of basic syntax commands. 2.5 Issuing Commands All characters in a command line must be issued at the same data rate, and with the same parity and format.
AT Commands Reference Manual 2.6.2 Handling of Invalid Numbers and S-Parameter Values The modem reacts to undefined numbers and S-parameter values in one of three ways: 1. Issue the ERROR result code, and leave the previous value of the parameter unchanged; 2. Issue the OK result code, and leave the previous value of the parameter unchanged; or, 3. Issue the OK result code, and set the parameter value to the valid value nearest to that specified in the command line.
AT Commands Reference Manual Result Code Types. There are three types of result codes: final, intermediate, and unsolicited. Result codes are described in Section 3.5. 2.7.2 1. A final result code indicates the completion of a full modem action and a ability to accept new commands from the DTE. 2. An intermediate result code is a report of the progress of an modem action. The CONNECT result code is an intermediate result code.
AT Commands Reference Manual Fax Modes. If a single value is to be reported, the form of the result code is: or () 2.7.3 +: Information Text Formats for Test Commands In general, the format of information text returned by extended syntax commands is described in the definition of the command. The modem may insert intermediate characters in very long information text responses in order to avoid overrunning DTE receive buffers.
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AT Commands Reference Manual 3 Data Command Set 3.1 Command Guidelines The commands used to control and report modem operation in data modem mode are defined in this section. The Data Modem Mode commands and responses described in this section are applicable when command +FCLASS=0. (See Section 3.2.1 for the definition of the FCLASS command.) The default values are typical of a fully configured modem supporting all data rates and options.
AT Commands Reference Manual 3.2.1 Generic Modem Control Z - Soft Reset and Restore Profile This command causes the modem to perform a soft reset and restore (recall) the configuration profile. If no is specified, zero is assumed. Syntax Z Defined Values Decimal number corresponding to the selected profile. 0 Soft reset and restore stored profile 0. 1 Soft reset and restore stored profile 1. Result Codes OK = 0 or 1. ERROR Otherwise.
AT Commands Reference Manual Reporting Current or Selected Values Command: +FCLASS? Response: +FCLASS: Example: +FCLASS: 0 For the default setting. Reporting Supported Range of Parameter Values Command: +FCLASS=? Response: +FCLASS: ( range) Example: +FCLASS: (0,1,1.0,2,8,10) +VCID - Caller ID (CID) This command controls the reporting and presentation of data associated with the Caller ID services in the Incoming Call Line ID (ICLID) data format for the next call.
AT Commands Reference Manual +VRID - Report Retrieved Caller ID (CID) This command reports the data associated with the Caller ID services in the Incoming Call Line ID (ICLID) data format for the last received call. Syntax +VRID= Defined Values Decimal number corresponding to the selected option. 0 Reports Caller ID with formatted presentation to the DTE. The modem presents the data items in a pair format.
AT Commands Reference Manual \N - Operating Mode This command controls the preferred error correcting mode to be negotiated in a subsequent data connection. This command is affected by the OEM firmware configuration. Syntax \N Defined Values Decimal number which corresponds to the selected mode. 0 Selects normal speed buffered mode (disables error-correction mode). (Forces &Q6.) 1 Serial interface selected - Selects direct mode and is equivalent to &M0, &Q0 mode of operation. (Forces &Q0.
AT Commands Reference Manual I - Identification This command causes the modem to reports the requested result according to the command parameter. Syntax I Defined Values Decimal number corresponding to the selected information. 0 Reports product code, e.g., “56000”. 1 Reports the least significant byte of the stored checksum in decimal. Reports 255 if the prestored checksum value is FFh. 2 Reports "OK". 3 Reports identification codes.
AT Commands Reference Manual 4 Reports OEM defined identifier string in either Hayes-compatible binary format (default) or ASCII format (selectable by ConfigurACE), e.g.: a007040284C6002F bC60000000 r1005111151012000 3000111170000000 5 Reports Country Code parameter (see +GCI). 6 Reports modem data pump model and internal code revision. Example: “RCV56DPF-PLL L8773A Rev 14.00/34.00”. 7 Reports “OK”. Result Codes OK = 0 - 7. ERROR Otherwise.
AT Commands Reference Manual +GMM - Request Model Identification This command causes the modem to report the modem product. Syntax +GMM Typical Response +GMM: V90 +GMR - Request Revision Identification This command causes the modem to report the modem version, revision level or date. This is the same as the I3 command.
AT Commands Reference Manual +GCI - Country of Installation This extended syntax command selects and indicates the country of installation for the modem. This parameter selects the settings for any operational parameters that need to be adjusted for national regulations or telephone networks. Syntax +GCI= Defined Values 8-bit country code from Annex A of T.35. The value is the hexadecimal equivalent of the T.
AT Commands Reference Manual &F - Restore Factory Configuration (Profile) The modem loads the factory default configuration (profile). The factory defaults are identified for each command and in the S-Parameter descriptions. A configuration (profile) consists of a subset of S-Parameters. Syntax &F[] Defined Values Decimal number corresponding to the selected configuration. 0 Restore factory configuration 0. 1 Restore factory configuration 1.
AT Commands Reference Manual &Y - Designate a Default Reset Profile This command selects which user profile will be used after a hard reset. Syntax &Y Defined Values Decimal number corresponding to the selected profile. 0 The modem will use profile 0. 1 The modem will use profile 1. Result Codes OK = 0 to 1. ERROR If > 1, or if NVRAM is not installed or is not operational.
AT Commands Reference Manual &Zn=x - Store Telephone Number The modem can store up to four telephone numbers and each telephone number dial string can contain up to 31 digits. (Requires 256-byte NVRAM installed.) Syntax &Z Defined Values Decimal number from 0 to 3 corresponding to the selected telephone number. Dial string from 0 to 31 characters. Result Codes OK For ≤ 3, and ≤ 31 digits.
AT Commands Reference Manual %8 - Plug and Play Vendor ID and Product Number Sets and stores Vendor ID and product number for serial Plug and Play and for ISA Plug and Play which use the Conexant 11596 Plug and Play device. Applicable to Desktop configuration only.
AT Commands Reference Manual **- Load Flash Memory The linear flash memory uploader allows flash memory connected to the modem external memory bus to be upgraded with revised modem firmware. This process transfers (uploads) the upgraded modem firmware (data) from the host computer to the modem which transfers the data to the flash memory device. The linear flash memory downloader allows the flash memory connected to the modem external memory bus to read and saved.
AT Commands Reference Manual 8. The messages described in Table 3-1 may occur during the uploading process: Table 3-1. Upload Messages Message Device not supported Wrong S37 format Record error Download abort Erase fail Download error, Re-Load Error, No H/W flow ctl DTE timeout Code doesn’t match hardware Device successfully programmed Description Displayed if the FLM used does not support the flash memory that is installed on the board.
AT Commands Reference Manual 3.2.2 DTE-Modem Interface commands The parameters defined in this section control the operation of the interface between the DTE and modem. E - Command Echo The modem enables or disables the echo of characters to the DTE. The parameter value, if valid, is written to S14 bit 1. Syntax E Defined Values Decimal number corresponding to the option. 0 Disables command echo. 1 Enables command echo. (Default.) Result Codes OK = 0 or 1. ERROR Otherwise.
AT Commands Reference Manual V - Result Code Form This command selects the sending of short-form or long-form result codes to the DTE. The parameter, if valid, is written to S14 bit 3. Syntax V Defined Values Decimal number corresponding to the selected option. 0 Enables short-form (terse) result codes. Line feed is not issued before a short-form result code. 1 Enables long-form (verbose) result codes. (Default.) Result Codes OK = 0 or 1. ERROR Otherwise.
AT Commands Reference Manual X - Extended Result Codes This command selects the subset of the result code messages used by the modem to inform the DTE of the results of commands. Blind dialing is enabled or disabled by country parameters. If the user wishes to enforce dial tone detection, a "W" can be placed in the dial string (see D command). The information below is based upon the default implementation of the X results table. Table 3-2 indicates the messages which are enabled for each X value.
AT Commands Reference Manual 101b is written to S22 bits 6, 5, and 4, respectively. 3 Enables reporting of busy tones; send only OK, CONNECT, RING, NO CARRIER, ERROR, NO ANSWER, and CONNECT XXXX. Blind dialing is enabled/disabled by country parameters. If dial tone detection is enforced and dial tone is not detected, NO CARRIER will be reported. The value 110b is written to S22 bits 6, 5, and 4, respectively. 4 Enables reporting of busy tones; send all messages.
AT Commands Reference Manual Table 3-2.
AT Commands Reference Manual Table 3-2.
AT Commands Reference Manual Table 3-2.
AT Commands Reference Manual &C - RLSD (DCD) Option The modem controls the RLSD output in accordance with the parameter supplied. The parameter value, if valid, is written to S21 bit 5. Syntax &C Defined Values Decimal number corresponding to the selected option. 0 RLSD remains ON at all times. 1 RLSD follows the state of the carrier. (Default.) Result Codes OK 0 or 1. ERROR Otherwise.
AT Commands Reference Manual &Q2, &Q3: DTR drop causes the modem to hang up. Auto-answer is inhibited. 2 DTR drop is interpreted according to the current &Qn setting as follows: &Q0 through &Q6: DTR drop causes the modem to hang up. Auto-answer is inhibited. (Default.) 3 DTR drop is interpreted according to the current &Qn setting as follows: &Q0, &Q1, &Q5, &Q6: DTR drop causes the modem to perform a soft reset as if the Z command were received. The &Y setting determines which profile is loaded.
AT Commands Reference Manual &M - Asynchronous/Synchronous Mode Selection This command determines the DTR operating mode. The modem treats the &M command as a subset of the &Q command. Syntax &M Defined Values Decimal number corresponding to the selected option. 0 Selects direct asynchronous operation. The command sequence &M0\N0 selects normal buffered mode, but the command sequence \N0&M0 selects direct mode. This is because the \N0 command is analogous to the &Q6 command.
AT Commands Reference Manual &Q - Sync/Async Mode This command is an extension of the &M command and is used to control the connection modes permitted. It is used in conjunction with S36 and S48. (Also, see \N.) NOTE: When the &Q0 to &Q3 command is issued to select the mode, the subsequent connect message will report the DCE speed regardless of the W command and S95 settings. Syntax &Q Defined Values Decimal number corresponding to the selected option.
AT Commands Reference Manual &R - RTS/CTS Option This selects how the modem controls CTS. CTS operation is modified if hardware flow control is selected (see &K command). The parameter value, if valid, is written to S21 bit 2. Syntax &R Defined Values Decimal number corresponding to the selected option. 0 In sync mode, CTS tracks the state of RTS; the RTS-to-CTS delay is defined by S26. In async mode, CTS is normally ON and will turn OFF only if required by flow control.
AT Commands Reference Manual &X - Select Synchronous Clock Source Selects the source of the transmit clock for the synchronous mode of operation. The parameter value, if valid, is written to S27 bits 4 and 5. In asynchronous mode, the transmit and receive clocks are turned OFF. In synchronous mode, the clocks are turned ON with the frequency of 1200 Hz or faster corresponding to the speed that is selected for modem operation.
AT Commands Reference Manual +IPR - Fixed DTE Rate This numeric extended-format parameter specifies the data rate at which the modem will accept commands during online operation. It may be used to select operation at rates at which the modem is not capable of automatically detecting the data rate being used by the DTE. Specifying a value of 0 disables the function and allows operation only at rates automatically detectable by the modem.
AT Commands Reference Manual +IFC - DTE-Modem Local Flow Control This extended-format compound parameter controls the operation of local flow control between the DTE and the modem during the data state when V.42 error control is used, or when fallback to non-error control mode is specified to include buffering and flow control. It accepts two numeric subparameters.
AT Commands Reference Manual +ILRR - DTE-Modem Local Rate Reporting This extended-format numeric parameter controls whether or not the extended-format +ILRR: information text is transmitted from the modem to the DTE. Syntax +ILRR= Defined Values Decimal number corresponding to the selected option. 0 Disables reporting of local port rate (+ILRR: is not transmitted). (Default.) 1 Enables reporting of local port rate (+ILRR: is transmitted).
AT Commands Reference Manual Defined Values Decimal value representing the current (negotiated or renegotiated) DTE-modem rate: 0, 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, or 230400 Optional decimal value reporting the RXD rate, if it is different from the TXD rate: 0, 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, or 230400 Example +ILRR: 19200 3.2.
AT Commands Reference Manual Defined Values 100722B Character string corresponding to the selected option(s). 0-9 DTMF digits 0 to 9. * The 'star' digit (tone dialing only). # The 'gate' digit (tone dialing only). A-D DTMF digits A, B, C, and D. Some countries may prohibit sending of these digits during dialing. L Re-dial last number: the modem will re-dial the last valid telephone number. The L must be immediately after the D with all the following characters ignored).
AT Commands Reference Manual & Wait for credit card dialing tone before continuing with the dial string. If the tone is not detected within the time specified by S7 (US models) or S6 (W-class models), the modem will abort the rest of the sequence, return on-hook, and generate an error message. , Dial pause: the modem will pause for a time specified by S8 before dialing the digits following ",". ; Return to command state.
AT Commands Reference Manual T - Set Tone Dial Default This command forces DTMF dialing until the next P dial modifier or P command is received. The modem will set an S-Parameter bit to indicate that all subsequent dialing should be conducted in tone mode. The DP command will override this command. Clears S14 bit 5. This command may not be permitted in some countries. (See P.
AT Commands Reference Manual H - Disconnect (Hang-Up) This command initiates a hang up sequence. This command may not be available for some countries due to PTT restrictions. Syntax H Defined Values Decimal number corresponding to the selected option. 0 The modem will release the line if the modem is currently on-line, and will terminate any test (AT&T) that is in progress.
AT Commands Reference Manual O - Return to On-Line Data Mode This command determines how the modem will enter the on-line data mode. If in the online command mode, the modem enters the on-line data mode with or without a retrain. If in the off-line command mode (no connection), the modem reports ERROR. Syntax O Defined Values Decimal number corresponding to the selected option. 0 Enters on-line data mode without a retrain. Handling is determined by the Call Establishment task.
AT Commands Reference Manual L - Speaker Volume This command sets the speaker volume control. The parameter value, if valid, is written to S22 bits 0 and 1. Syntax L Defined Values Decimal number corresponding to the selected option. 0 Low volume. 1 Low volume. (Default.) 2 Medium volume. 3 High volume. Result Codes OK = 0 to 3. ERROR Otherwise. M - Speaker Control This command selects when the speaker will be on or off.
AT Commands Reference Manual &G - Select Guard Tone This command causes the modem to generate the guard tone selected by this command (DPSK modulation modes only). The parameter value, if valid, is written to S23 bits 6 and 7. Syntax &G Defined Values Decimal number corresponding to the selected option. 0 Disables guard tone. (Default.) 1 Disables guard tone. 2 Selects 1800 Hz guard tone. This command may not be permitted in some countries. Result Codes OK = 0 to 2.
AT Commands Reference Manual &V - Display Current Configuration and Stored Profiles This command reports the current (active) configuration, the stored (user) profiles, and the first four stored telephone numbers. The stored profiles and telephone numbers are not displayed if the NVRAM is not installed or is not operational as detected by the NVRAM test during reset processing.
AT Commands Reference Manual &V1 - Display Last Connection Statistics Displays the last connection statistics in the following format (shown with typical results): TERMINATION REASON.......... LOCAL REQUEST LAST TX rate................ 26400 BPS HIGHEST TX rate............. 26400 BPS LAST RX rate................ 49333 BPS HIGHEST RX rate............. 49333 BPS PROTOCOL.................... LAPM COMPRESSION................. V42Bis Line QUALITY................ 038 Rx LEVEL....................
AT Commands Reference Manual \V - Single Line Connect Message Enable This command enables or disables the single line connect message format as follows: Syntax \V Defined Values Decimal number corresponding to the selected option. 0 Connect messages are controlled by the command settings X, W, and S95. 1 Connect messages are displayed in the single line format described below subject to the command settings V (Verbose) and Q (Quiet).
AT Commands Reference Manual %L - Report Line Signal Level Returns a value which indicates the received signal level. The value returned is a direct indication (DAA dependent) of the receive level at the MDP, not at the telephone line connector. For example, 009 = -9 dBm, 043 = -43 dBm, and so on. Result Codes OK %Q - Report Line Signal Quality Reports the line signal quality (DAA dependent). Returns the higher order byte of the EQM value.
AT Commands Reference Manual *D - Display Delayed Numbers This command causes the modem to send a list of the delayed numbers together with the delay associated with each. The modem will return a list of delayed telephone numbers as defined in the *B command. The format of the response is shown by the example below (delay times are shown as hours:minutes:seconds). If no numbers are delayed, only the OK result code is issued. Syntax *D Example NO.
AT Commands Reference Manual –STE= - Set Telephony Extension The –STE command enables/disables Line-In-Use, Extension Pickup, and Remote Hangup detection features. Note: Additional hardware may be required to support these features. Syntax -STE= Defined Values Decimal number corresponding to the selected bit-mapped options. The bit fields are defined as follows: Bit 0 Line-In-Use detection enable/disable. Bit 1 Extension Pickup detection enable/disable.
AT Commands Reference Manual When off-hook and either an extension is picked up or a line reversal is detected, the modem will drop the connection. The disconnect reason in register S86=25 (this is also defined for #UD). The user must flash the hook in order to get a dial tone due because the remote server will be retraining. If the local handset is picked up while the modem is off-hook, the modem will do a linkdisconnect, flash the hook for 1.5 seconds, then connect the local handset to the line.
AT Commands Reference Manual Case 2: Modem off-hook, Extension Pick-up If the modem is connected and another extension goes off-hook, the modem will send a GSTN Cleardown to the remote modem and then immediately hang-up. Due to the noise possibly being added to the line when a telephone extension is picked-up, a GSTN Cleardown may or may not successfully be received by the remote mode.
AT Commands Reference Manual The line is not in use and the modem tries to dial AT-STE=7 ATDT555-1212 Modem goes off-hook CONNECT An extension is off-hook but there is silence on the line and the modem tries to dial AT-STE=3 ATDT555-1212 Modem goes off-hook NO DIAL TONE Modem is connected in data mode and an extension goes off-hook AT-STE=2 ATDT555-1212 CONNECT NO CARRIER Cleardown sent Extension is picked up, GSTN ATS86=? 025 Modem is connected in data mode and remote modem goes on-hook AT-STE=4 ATDT555
AT Commands Reference Manual Modem is connected in data mode and the LOCAL HANDSET goes off-hook AT-STE=7 ATDT555-1212 5 sec delay CONNECT NO CARRIER Local handset goes off-hook, GSTN Cleardown sent, and remote modem goes on-hook ATS86=? 025 500ms after no carrier a dial tone is heard on the local handset Modem is in answer machine mode and an extension goes off-hook AT-STE=2 AT+FCLASS=8 OK h Local handset on-hook R Ring AT+VLS=1 OK AT+VSM=1,7200,0,0 100722B AT+VTX Starts to play greetin
AT Commands Reference Manual Automated system that needs to periodically use the line while giving the voice user the highest priority A common use for these features would be an automated system that needs to periodically use the line while giving the voice user the highest priority. The automated system would make a connection when the line is free. It would do this without disturbing the line if the line is in use. The automated system would periodically retry the connection until the line is free.
AT Commands Reference Manual 3.2.4 Modulation Control Commands +MS - Modulation Selection This extended-format compound parameter controls the manner of operation of the modulation capabilities in the modem. It accepts six subparameters. Syntax +MS=[[,[,[,[, [,]]]]]] Where possible , , , , and values are listed in Table 3-3. Table 3-3.
AT Commands Reference Manual Defined Values A string which specifies the preferred modem carrier to use in originating or answering a connection. values are strings of up to eight characters, consisting only of numeric digits and upper case letters. values for ITU standard modulations take the form: <1-4 digits>. Defined values are listed in Table 3-3. A numeric value which enables or disables automatic modulation negotiation (e.
AT Commands Reference Manual Reporting Current or Selected Values Command: +MS? Response: +MS:,,, , , Note: The current active settings are reported under control of the +MR parameter. Example: +MS: K56, 1,300,33600,300,56000 For default values. This example allows maximum system flexibility to determine optimal receive and transmit rates during operation.
AT Commands Reference Manual Defined Values A decimal number corresponding to the selected option: 0 Disables reporting of modulation connection (+MCR: and +MRR: are not transmitted). (Default.) 1 Enables reporting of modulation connection (+MCR: and +MRR: are transmitted with tx rate, rx rate). 2 Enables reporting of modulation connection (+MCR: and +MRR: are transmitted with rx rate only).
AT Commands Reference Manual +MRR: Report Syntax Response: +MRR: , Decimal transmit rate in bits/s. Decimal receive rate in bits/s. Example: +MRR: 28800, 48000 %E - Enable/Disable Line Quality Monitor and Auto-Retrain or Fallback/Fall Forward Controls whether or not the modem will automatically monitor the line quality and request a retrain (%E1) or fall back when line quality is insufficient or fall forward when line quality is sufficient (%E2).
AT Commands Reference Manual %U - Select µ-Law or A-Law Codec Type This command selects µ-Law or A-Law codec type for V.90 and K56flex modulation. This command also stores the selected setting directly to NVRAM. The default value is country specific. Syntax %U Defined Values Decimal number corresponding to the selected option. 0 Selects µ-Law. 1 Selects A-Law. Result Codes OK = 0 or 1 ERROR Otherwise.
AT Commands Reference Manual 3.2.5 Error Control Commands +ES - Error Control and Synchronous Mode Selection This extended-format command specifies the initial requested mode of operation when the modem is operating as the originator, optionally specifies the acceptable fallback mode of operation when the modem is operating as the originator, and optionally specifies the acceptable fallback mode of operation when the modem is operating as the answerer.
AT Commands Reference Manual Decimal number which specifies the acceptable fallback mode of operation when the modem is operating as the answerer or specifies V.80 Synchronous Access Mode. 0 Direct Mode. 1 Error control disabled, use Normal Mode. 2 LAPM, MNP, or Normal Mode error control optional. (Default.) 3 LAPM, MNP, or Direct Mode error control optional. 4 LAPM or MNP error control required; disconnect if error control is not established.
AT Commands Reference Manual +EB - Break Handling in Error Control Operation This extended-format compound parameter controls the break handling in V.42 operation. It accepts three numeric subparameters: Syntax +EB=[[,[,]]] Defined Values Decimal number 0 specifying that break is to be ignored, i.e., not signaled to remote DCE. Decimal number 0 specifying that any transmitted V.
AT Commands Reference Manual Reporting Supported Range of Parameter Values: Command: +ESR=? Response: +ESR: () Example: +ESR: (0) +EFCS - 32-bit Frame Check Sequence This extended-format numeric parameter controls the use of the 16-bit or 32-bit frame check sequence (FCS) option in V.42. Syntax +EFCS=[] Defined Values Decimal number 0 specifying the use of the 16-bit FCS specified in V.42.
AT Commands Reference Manual +ER - Error Control Reporting This extended-format numeric parameter controls whether or not the extended-format +ER: intermediate result code is transmitted from the modem to the DTE. S95 bit 3 is reset to 0 for +ER=0 and is set to a 1 for +ER=1. The more recent setting of +ER or S95 bit 3, and the W command setting, determines the actual error control result code reporting (see S95 Parameter and W Command).
AT Commands Reference Manual +ER: The +ER: reported represents the current (negotiated or renegotiated) modemmodem error control type. If enabled, the intermediate result code is transmitted at the point during error control negotiation (handshaking) at which the modem has determined which error control protocol will be used (if any), before the final result code (e.g., CONNECT) is transmitted.
AT Commands Reference Manual +ETBM - Call Termination Buffer Management This extended-format compound parameter controls the handling of data remaining in modem buffers upon call termination. It accepts three numeric subparameters: Syntax +ETBM=[[,[,]]] Defined Values Decimal number 0 specifying that disconnect will occur immediately and all buffered transmit data will be discarded when the local DTE requests call disconnection.
AT Commands Reference Manual \B - Transmit Break to Remote In non-error correction mode, the modem will transmit a break signal to the remote modem with a length in multiples of 100 ms according to parameter specified. If a number in excess of 9 is entered, 9 is used. The command works in conjunction with the \K command. In error correction mode, the modem will signal a break through the active error correction protocol, giving no indication of the length.
AT Commands Reference Manual \K - Break Control Controls the response of the modem to a break received from the DTE or the remote modem or the \B command. The parameter value, if valid, is written to S40 bits 3, 4, and 5. Syntax \K Defined Values Decimal number corresponding to the selected option. The response is different in three separate states.
AT Commands Reference Manual The third case is where a break is received from a remote modem during a non-error corrected connection: 0 Clears data buffers and sends break to the DTE. 1 Clears data buffers and sends break to the DTE. (Same as 0.) 2 Send a break immediately to DTE. 3 Send a break immediately to DTE. (Same as 2.) 4 Send a break in sequence with received data to DTE. 5 Send a break in sequence with received data to DTE. (Same as 4.) (Default.) Result Codes OK 0 to 5.
AT Commands Reference Manual 3.2.6 Data Compression Commands This section contains parameters to condition modem use of standard ITU-T V.42bis Data Compression Procedures. +DS - Data Compression This extended-format compound parameter controls the V.42bis data compression function if provided in the modem.
AT Commands Reference Manual +DS44 - V.44 Compression Select This extended-format compound parameter controls the V.44 data compression function. Syntax +DS44=[[,< compress_negotiation >[,[, [,[,[,[, [,]]]]]]]]] Defined Values Decimal number that specifies the desired direction(s) of operation of the data compression function; from the DTE point of view.
AT Commands Reference Manual Reporting Current or Selected Values Command: +DS44? Response: +DS44:,,, ,,, ,, Example: +DS44:3,0,0,2048,2048,32,32,4096,4096 For the default setting.
AT Commands Reference Manual Reporting Supported Range of Parameter Values Command: +DR=? Response: +DR: ( range) Example: +DR: (0,1) +DR: Intermediate Result Code The +DR: reported represents the current (negotiated or renegotiated) modemmodem data compression type.
AT Commands Reference Manual %C - Enable/Disable Data Compression Enables or disables data compression negotiation. The modem can only perform data compression on an error corrected link. The parameter value, if valid, is written to S41 bits 0 and 1. Syntax %C Defined Values Decimal number corresponding to the selected option. 0 Disables data compression. Resets S46 bit 1. 1 Enables MNP 5 data compression negotiation. Resets S46 bit 1. 2 Enables V.42 bis data compression.
AT Commands Reference Manual 3.2.7 V.8/V.8bis Commands +A8E - V.8 and V.8bis Operation Controls This command is defined for two conditions: as a parameter while the modem is on-hook, and as an action command while the modem is off-hook. If enabled, V.8 negotiation does not preclude simultaneous implementation of other negotiation means (e.g., V.8bis, V.18, V.32bis Annex A). This command is a compound parameter if issued while the modem is on-hook, used to precondition V.8 and V.
AT Commands Reference Manual Default values: 1,1,00,1,0,0 The ATD and ATA commands behave as specified in V.250, and +A8n indications are not generated by the modem. For subparameter values =6 and =5, the +A8I indications are issued during the course of the V.8 session to notify the DTE when the relevant V.8 signals are received.
AT Commands Reference Manual 3.2.8 Synchronous Access Mode Commands Three commands support Synchronous Access Mode: +ES Enables and disables Synchronous Access Mode in the client or central site modem (see 0) +ESA Configures the operation of the Synchronous Access Submode +ITF Selects Transmit Flow Control Thresholds Enabling Synchronous Access Mode enables the use of the 8-bit command characters defined in Table 9/V.80 of the Draft ITU-T Recommendation V.
AT Commands Reference Manual Specifies whether or not, in V.34 half-duplex operation, additional procedures besides those specified in § 12/V.34 shall be performed by the modem when switching from primary channel to secondary channel operation, and vice versa. This subparameter should not be commanded. Specifies the CRC polynomial used while operating in Framed sub-Mode. The options are: 0 CRC generation and checking disabled (default).
AT Commands Reference Manual +H - Enable/Disable RPI This command enables or disables Conexant Protocol Interface (RPI) processing and sets the DTE speed. Syntax +H= Defined Values Decimal number corresponding to the selected option. 0 Disable protocol interface and video ready mode. 1 Enable RPI mode and set DTE speed to 19200 bps. 2 Enable RPI mode and set DTE speed to 38400 bps. 3 Enable RPI mode and set DTE speed to 57600 bps. 11 Enable RPI+ mode.
AT Commands Reference Manual +ITF - Transmit Flow Control Thresholds The +ITF command determines the flow control thresholds used by the modem for transmit data from the DTE. This optional compound parameter allows the DTE to determine the input buffer size in the modem for data on circuit 103 (transmit data) from the DTE, to control the thresholds used for flow control of such data, and to control how often the modem reports to the DTE the number of octets in this buffer.
AT Commands Reference Manual Reporting Supported Options The modem sends a string of information text to the DTE consisting of supported options in response to the following command: +ITF=? The response is: +ITF: (list of supported values),(list of supported values),(list of supported values) Example: +ITF=? +ITF: (0-255),( 0-255),(0) The maximum reported value is the input transmit data buffer level at which the modem signals a transmit data overrun indication to the DTE.
AT Commands Reference Manual Data Call State Model For purposes of this command, there are four data call states, and associated status issues: • • • • Call Setup − Calling DCE: get dial tone, generate dial digits, detect call progress signals. − Answering DCE: detect ringing, detect CallerID, etc. Negotiation − V.25 calling tone/answer tone exchanges − V.8 or V.8bis call function negotiations − V-series modem carrier detection and training − Modem-to-modem protocols (e.g., V.42, V.42bis).
AT Commands Reference Manual Defined Values DIAG 5 hexadecimal characters (44h, 49h, 41h, 47h, 20h) < Left angle bracket (less than sign) (3Ch) token Unique 32-bit hexadecimal string 2A4D3263(32h, 4h1, 34h, 44h, 33h, 32h, 36h, 33h) space space character (20h) Key One- or two-digit hexadecimal number (see Key in Table 3-4) = Equal sign (3Dh) Value Any string as defined below (Table 3-4 - Table 3-9 as appropriate) > Right angle bracket (greater than sign) (3Eh) Unless otherwise noted, all val
AT Commands Reference Manual Table 3-4.
AT Commands Reference Manual Table 3-5. Call Setup Result Codes Code 0 1 2 3 4 5 Definition No previous call (modem log has been cleared since any previous calls) No dial tone detected Reorder signal detected, network busy Busy signal detected No recognized signal detected (e.g., no signal, or nothing recognizable) Voice detected * if this is a voice modem (e.g., V.253) operating in voice mode (e.g., +FCLASS=8.0) Data Answering signal detected (e.g., V.25 ANS, V.8 ANSam) Data Calling signal detected (e.g.
AT Commands Reference Manual Table 3-9. gstnModulationSchemeActive from 3.7.2/V.58 Value 0 1 2 3 4 8 9 A B C E 81 84 85 Description V.17 (G3 Fax call) V.21 V.22 V.22bis V.23 Constant Carrier (1200/75) V.27ter (G3 Fax call) V.29 HD (G3 Fax call) V.32 V.32bis V.34 V.90 and V.92 K56flex Bell 212A Bell 103 Table 3-10. errorControl Active from 3.5.2/V.58 Value 0 1 2 80 Description Disable/none V.42 LAPM V.42 Alternative protocol (MNP™) MNP10™ Table 3-11. compressionActive from 3.2.2/V.
AT Commands Reference Manual Table 3-12. callCleared codes from 3.6.4/V.
AT Commands Reference Manual Example Modem Response and Usage Example #UD commend response are shown in Table 3-13. Table 3-13.
AT Commands Reference Manual 3.2.10 Compatibility Commands &L - Leased Line Operation This command requests leased line or dial-up operation. This command is provided for compatibility only; no mode change is performed, dial-up operation continues. The OK response is returned for a valid parameter, but no other action is performed. The parameter value, if valid, is written to S27 bit 2. Syntax &L Defined Values Decimal number corresponding to the selected option.
AT Commands Reference Manual @M - Initial Cellular Power Level Setting This command is included for compatibility only and has no effect other than returning a result code. Syntax @M Defined Values Decimal number corresponding to the selected power setting. 0 @M0 command. . . 30 @M30 command. Result Codes OK 0 to 30. ERROR Otherwise. :E - Compromise Equalizer Enable Command This command is included for compatibility only and has no effect other than returning a result code.
AT Commands Reference Manual 3.2.11 FastConnect Commands $F – FastConnect Control This command allows configuring of the client modem to connect to a central site modem that supports non-standard V.22 and V.22 bis FastConnect protocols. Syntax $F Defined Values 3-88 Decimal number which specifies the initial requested mode of operation when the modem is operating as the originator.
AT Commands Reference Manual 3.2.12 V.92 +P and –Q Commands This section describes the +P (PCM DCE) and –Q commands and parameters used to control the V.92 Mode operation. +PCW - Call Waiting Enable This command controls the operation of the modem in the presence of call waiting. Syntax +PCW= Defined Values Decimal number corresponding to the selected operation. 0 Request modem-on-hold if enabled by +PMH and collect caller ID information if enabled by +VRID. Toggle V.24 circuit 125.
AT Commands Reference Manual +PMH - Modem-on-Hold Enable This command controls the selection of modem-on-hold in the modem. The action of the modem in response to modem-on-hold events is determined by the state of this command as well as the state of a negotiated handshake with a V.92-compliant server in V.92 Mode. Syntax +PMH= Defined Values Decimal number corresponding to the selected operation. 0 Modem-on-hold enabled in V.92 Mode. (Default.) 1 Disabled modem-on-hold.
AT Commands Reference Manual +PMHT – Modem-on-Hold Timer This command controls whether or not the modem will grant or deny a modem-on-hold (MOH) request as well as setting the MOH Timeout value. Syntax +PMHT= Defined Values Decimal number corresponding to selected setting. 0 Deny V.92 modem-on-hold Request (Default.
AT Commands Reference Manual +PMHR - Initiate Modem-on-Hold This command requests the modem to initiate or to confirm a modem-on-hold procedure. The modem will return ERROR if modem-on-hold is not enabled or if the modem is in an idle condition. The modem will return the string response +PMHR: where is a decimal value corresponding to the status of the modem's hold exchange procedure as defined below.
AT Commands Reference Manual +PIG - PCM Upstream Ignore This command controls the selection of PCM upstream in the modem. The actual state of PCM upstream is determined by the state of this command as well as the state of a negotiated handshake with a V.92-compliant server in V.92 Mode. Syntax +PIG= Defined Values Decimal number corresponding to the selected operation. 0 Enable PCM upstream negotiation. 1 Disable PCM upstream negotiation. (Default.) Result Codes OK 0 or 1 in V.
AT Commands Reference Manual +PQC - V.92 Phase 1 and Phase 2 Control This command controls the global enabling or disabling of the V.92 shortened Phase 1 and Phase 2 startup procedures. This command is used in conjunction with the +PSS command. Syntax +PQC= Defined Values Decimal number corresponding to the selected setting. 0 Enable Short Phase 1 and Short Phase 2. (Default.) 1 Enable Short Phase 1 only. 2 Not supported. 3 Disable Short Phase 1 and Short Phase 2.
AT Commands Reference Manual +PSS - Use Short Sequence This command causes a calling modem to force either a V.92 short or full startup sequence as defined by the +PQC command on the next and subsequent connections. Syntax +PSS= Defined Values Decimal number corresponding to the selected sequence. 0 The modems decide whether or not to use the short startup procedures. The short startup procedures can only be used if enabled by the +PQC command. (Default.) 1 Reserved.
AT Commands Reference Manual -QCPC - Force Full Startup Procedure Next Connection This command causes the modem to use full startup procedures on the next connection attempt regardless of the setting of the +PQC command. After this attempt, the modem will select the startup procedure as defined by the +PQC command. If a shortened startup procedure is enabled by the +PQC command, then the quick connect profile will also be updated on the next connection attempt. Syntax -QCPC Result Code OK In V.
AT Commands Reference Manual 3.3 S-Parameters The S-Parameters are summarized in Table 3-14 along with their default values; registers denoted with an '*' may be stored in one of the two user profiles by entering the &W command. One of these profiles may be loaded at any time by using the Z command. Registers or register fields quoted as “reserved” are reserved for current or future use by the firmware, or are permanently overridden by PTT limitations.
AT Commands Reference Manual The default values shown in Table 3-14 may vary by modem firmware configuration. Consult the MCU firmware release notes for exact configuration. The factory default values may be loaded at any time by entering the &Fn command. Table 3-14.
AT Commands Reference Manual 3.3.2 S-PARAMETER DEFINITIONS S0 - Number of Rings to Auto-Answer S0 sets the number of the rings required before the modem automatically answers a call. Setting this parameter to zero disables auto-answer mode. Range: 0-255 rings Default: 0 S1 - Ring Counter S1 is incremented each time the modem detects a ring signal on the telephone line. S1 is cleared if no rings occur over an eight second interval.
AT Commands Reference Manual S5 - Backspace Character S5 sets the character recognized as a backspace. Pertains to asynchronous operation only. The modem will not recognize the Backspace character if it is set to a value that is greater than 32 ASCII. This character can be used to edit a command line.
AT Commands Reference Manual S8 - Pause Time For Dial Delay S8 sets the time, in seconds, that the modem must pause when the “,” dial modifier is encountered in the dial string. Range: 2-255 seconds Default: 2 S9 - Carrier Detect Response Time S9 is supported for backwards compatibility only. No value can be written. Responds with default value. Range: 6 tenths of a second Default: 6 (0.
AT Commands Reference Manual S12 - Escape Prompt Delay (EPD) S12 defines the maximum period, in fiftieths of a second, allowed between receipt of the last character of the three escape character sequence from the DTE and sending of the OK result code to the DTE. If any characters are detected during this time, the OK will not be sent. Sending of the OK result code does not affect entry into command mode. (See 3.1.3.
AT Commands Reference Manual S19 - Reserved S19 is supported for backwards compatibility only. No value can be written. Responds with default value. Range: None Default: 0 S20 - Reserved S20 is supported for backwards compatibility only. No value can be written. Responds with default value. Range: None Default: 0 S21 - V.24/General Bit Mapped Options Status S21 indicates the status of command options.
AT Commands Reference Manual S22 - Speaker/Results Bit Mapped Options Status S22 indicates the status of command options. Default: 117 (75h) (01110101b) Bits 0-1 Speaker volume (Ln) 0= 1= 2= 3= Bits 2-3 Off (L0) Low (L1) (Default.) Medium (L2) High (L3) Speaker control (Mn) 0= 1= 2= 3= Bits 4-6 Disabled (M0) Off on carrier (M1) (Default.) Always on (M2) On during handshake (M3) Limit result codes (Xn) 0= 4= 5= 6= 7= Bit 7 X0 X1 X2 X3 X4 (Default.
AT Commands Reference Manual S25 - Delay To DTR Off S25 sets the length of time that the modem will ignore DTR for taking the action specified by &Dn. Its units are seconds for synchronous modes and one hundredths of a second for other modes. Range: 0-255 (1 second for synchronous modes 1; 0.01 second otherwise) Default: 5 S26 - RTS to CTS Delay S26 sets the time delay, in hundredths of a second, before the modem turns CTS ON after detecting an OFF-to-ON transition on RTS when &R0 is commanded.
AT Commands Reference Manual S28 - Bit Mapped Options Status S28 indicates bit mapped options status. Default: 0 Bits 0 - 1 Reserved Bit 2 Reserved (always 0). Bits 3 - 4 Pulse dialing (&Pn) 0= 1= 2= 3= Bit 5-7 39%-61% make/break ratio at 10 pulses per second (&P0) (Default.
AT Commands Reference Manual S31 - Bit Mapped Options Status S31 indicates bit mapped options status. Default: 192 (C0h) (11000000b) Bit 0 Single line connect message enable/disable (\Vn) 0= 1= Messages controlled by S95, Wn and Vn (\V0) (Default.) Single line connect message (\V1) Bit 1 Reserved (0) Bits 2-3 Error correction progress messages (Wn) 0= 1= 2= Bits 4-5 DTE speed only (W0) (Default.
AT Commands Reference Manual S38 - Delay Before Forced Hang Up S38 specifies the delay between the modem's receipt of the H command to disconnect (or ON-to-OFF transition of DTR if the modem is programmed to follow the signal), and the disconnect operation. Applicable to error-correction connection only. This parameter can be used to ensure that data in the modem buffer is sent before the modem disconnects. 1.
AT Commands Reference Manual S41 - General Bit Mapped Options Status S41 indicates the status of command options. Default: 13 (C3h) (00001101b) Bits 0 -1 Compression selection (%Cn) 0= 1= 2= 3= Bits 2, 6 Disabled (%C0) MNP 5 (%C1) V.42 bis (%C2) MNP 5 and V.42 bis (%C3) (Default.
AT Commands Reference Manual S86 - Call Failure Reason Code When the modem issues a NO CARRIER result code, a value is written to S86 Register to help determine the reason for the failed connection. S86 records the first event that contributes to a NO CARRIER message. The code definitions are: Range: 0-26 Default: 21 3-110 S86=0 Normal hangup, no error occurred. S86=1 Reserved. S86=2 Reserved. S86=3 Call Waiting caused disconnect. S86=4 Physical carrier loss.
AT Commands Reference Manual S91 - PSTN Transmit Attenuation Level In non-PCM modes (V.90 or K56flex are PCM modes), S91 sets the transmit attenuation level from 0 to 15 dBm for the PSTN mode, resulting in a transmit level from 0 to 15 dBm. In some countries, the transmit level may not be changed and there are checks to prevent transmit attenuation level change using ConfigurACE. Range: 0 to 15 dBm (Corresponding to 0 to -15 dBm transmit level.) Default: 10 (-10 dBm transmit level.
AT Commands Reference Manual S210 – V.34 Symbol Rates The bits in this parameter control V.34 symbols rates and enables/disables V.34 asymmetric rates. This parameter is used for diagnostic purpose only. Default: 13 (0Dh) (00001101b) Bits 0-2 Selects the range of allowed V.34 symbol rates. 21 00 00 01 01 10 10 Bit 3 0 0 1 0 1 0 1 Symbol Rates (baud) 2400 only 2400 only (no 2734) 2400, 2800 2400, 2800, 3000 2400, 2800, 3000, 3200 2400, 2800, 3000, 3200, 3429 (Default.) Enable/disable V.
AT Commands Reference Manual 3.4 Cellular Commands Cellular direct connect, supported by portable application modems, allows a direct interface to most cellular telephones eliminating the need for other intelligent interfaces. Landline modems operate with the telephone system by either going off-hook detecting dial tone and the dialing the telephone number using pulses or DTMF digits, or detecting the RING signal and answering the call.
AT Commands Reference Manual ^I - Identify Cellular Phone Driver The modem reports the identification of the loaded cellular phone driver in response to the ^I command. The response is dependent upon the driver. Result Codes (Typical): CELLULAR DRIVER: OKI 900/910 (c) Copyright 1999, Conexant Systems, Inc. Version 1.
AT Commands Reference Manual 3.4.3 Operation Once the driver is loaded and the modem is connected to the cellular phone, and the phone is powered on dial/answer functions will be routed through the phone instead of the landline DAA, i.e., no special commands are needed to place or answer calls, the same AT commands and software packages that are used for landline communication sessions can be used.
AT Commands Reference Manual It is recommended that systems be set up if possible with separate modems to receive calls from other land based modems and cellular modems. This is so that land based users that experience high network attenuation do not have connection problems when communicating to modems configured for cellular operation. The above configurations are the minimum additional AT commands may be issued to change the result messages etc., AT&F is used to ensure that the modem is in a know state.
AT Commands Reference Manual Table 3-15. Remote Modem Configuration and Resulting Transmit Levels Remote Modem Configuration V.34 Direct Connect AT&F AT&F-SEC=1,x V.32bis Direct Connect AT&F AT&F-SEC=1,x V.34 PSTN AT&F V.32bis PSTN AT&F Base Site Configuration (Connected to PSTN) AT&F-SEC=0,x V.34 V.32bis Mod = V.32bis Mod = V.32bis Mode = -EC Mode = Single -EC RTxlv = Driver RTxlv = Driver BTxlv = x BTxlv = -10 Mod = V.34 Mod = V.
AT Commands Reference Manual 3.5 Result Codes The modem responds to commands from the DTE and to activity on the line by signaling to the DTE in the form of result codes. The result codes that the modem can send are described in Table 3-16. Two forms of each result code are available: long-form, an English-like "verbose" response, and short-form, a data-like numeric response (included in parentheses following the long-form). The long-form code is preceded and terminated by the sequence < CR> < LF>.
AT Commands Reference Manual Table 3-16. Result Code Definitions Code +F4 0 1 Message +FCERROR OK CONNECT 2 RING 3 NO CARRIER 4 ERROR 5 CONNECT 1200 6 NO DIAL TONE 7 BUSY 8 NO ANSWER 9 CONNECT 600 10 CONNECT 2400 11 CONNECT 4800 12 CONNECT 9600 13 14 15 16 CONNECT 7200 CONNECT 12000 CONNECT 14400 CONNECT 19200 17 CONNECT 38400 18 CONNECT 57600 19 CONNECT 115200 22 CONNECT 75TX/1200RX 100722B Meaning High speed fax data (V.27, V.29, V.33, or V.17) is expected but a V.
AT Commands Reference Manual Table 3-16.
AT Commands Reference Manual Table 3-16.
AT Commands Reference Manual Table 3-16.
AT Commands Reference Manual Table 3-16. Result Code Definitions (Continued) Code Message 201 +MRR: 38667 202 +MRR: 41333 203 +MRR: 42667 204 +MRR: 45333 205 +MRR: 46667 206 +MRR: 49333 207 +MRR: 50667 208 +MRR: 53333 209 +MRR: 54667 Meaning The modem has connected to the line at 38667 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 41333 bps and carrier reporting is enabled. (See S95 and Xn.
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AT Commands Reference Manual 4 Fax Class 1 and Fax Class 1.0 Commands 4.1 Fax I/O Processing The fax I/O interface supports asynchronous serial and parallel interfaces. The character format is 8 bits data, no parity, and 1 stop bit. Start and stop elements are removed from the transmit data and added to the receive data. Both transmit and receive data are buffered. Flow control using XON/XOFF or RTS/CTS is provided.
AT Commands Reference Manual Table 4-1. Fax Class 1 and Fax Class 1.
AT Commands Reference Manual 4.1.4 Fax Origination Origination of fax calls is made using the ATD command. Upon completion of the dial function, a calling tone at 1100 Hz is transmitted, with a cadence of 0.5 seconds on and 3 seconds off. The modem automatically enters mode +FRH=3 and sends the CONNECT message to the DTE when FSK flags are detected from the remote. 4.1.
AT Commands Reference Manual the last byte in the frame, the modem sends to the DTE marking the end of the frame. The modem then generates either the OK message if no errors were detected or the ERROR message if errors were detected (FCS is incorrect), and returns to command mode.
AT Commands Reference Manual as the end of stream marker, and is not transmitted. All data received from the DTE after the is ignored by the modem until the modem generates either the CONNECT, OK, or ERROR result code. If no more data is in the transmit buffer, and the last transmitted character was not an ASCII NULL, the modem generates the OK result code and returns to the command mode.
AT Commands Reference Manual 4.2 Commands and Parameters 4.2.1 Mode Entry Commands +FCLASS=1 - Select Facsimile Class 1 Mode +FCLASS=1 selects the Fax Class 1 Mode. The Fax Class 1 Mode commands and responses described in this section are applicable when command +FCLASS=1 as shown in Table 4-1. +FCLASS=1.0 - Select Facsimile Class 1.0 Mode +FCLASS=1.0 selects the Fax Class 1.0. The Fax Class 1.0 Mode commands and responses described in this section are applicable when command +FCLASS=1.
AT Commands Reference Manual +FAE - Auto Answer Enable This command enables or disables fax adaptive answer. This command operates identically to the +FAA command. Syntax +FAE= Defined Values Decimal number corresponding to the selected option. 0 Disable data /fax auto answer mode. (Default.) 1 Enable data /fax auto answer mode. The modem determines the calling type and issues DATA result code (13) if the caller is a data modem or issues FAX result code (15) if the caller is a fax modem.
AT Commands Reference Manual +FRS - Receive Silence This command causes the modem to listen and report an OK result code when silence has been detected on the line for the specified period of time. This command will terminate when the required period of silence is detected or when the DTE sends the modem another character other than XON or XOFF, which is discarded. In either event, the OK result code is returned.
AT Commands Reference Manual +FTM - Transmit Facsimile This command causes the modem to transmit data using the modulation defined below. When a valid value is entered, the modem transmits the proper training sequence in the selected mode, followed by constant 1 bits until data is received from the DTE. The modem also returns the CONNECT result code at the beginning of the training sequence.
AT Commands Reference Manual Reporting Current or Selected Values Command: +FTM? Response: +FTM: Example: +FTM: 98 For V.17 9600 bps. Reporting Supported Range of Parameter Values Command: +FTM=? Response: +FTM: ( range) Example: +FTM: 3,24,48,72,73,74,96,97,98,121,122,145,146 +FRM - Receive Facsimile This command causes the modem to enter the receiver mode using the modulation defined below.
AT Commands Reference Manual +FTH - Transmit Data with HDLC Framing This command causes the modem to transmit data using HDLC protocol and the modulation defined below. Syntax +FTH= Defined Values Decimal number corresponding to the selected modulation mode and data rates shown in Table 4-2. Result Codes CONNECT OK Reported for either of two conditions: 1. At the beginning of transmission of the training pattern for the selected modulation. 2. If the Final Frame bit is 0.
AT Commands Reference Manual +FRH - Receive Data with HDLC Framing This command causes the modem to receive frames using HDLC protocol and the modulation defined below. An ERROR response code results if this command is issued while the modem is on-hook. Syntax +FRH= Defined Values Decimal number corresponding to the selected modulation mode and data rates shown in Table 4-2. Reporting Current or Selected Values Command: +FRH? Response: +FRH: Example: +FRH: 98 For V.17 9600 bps.
AT Commands Reference Manual 4.2.3 Service Class 1 Parameters +FAR - Adaptive Reception Control If Adaptive Reception is enabled, the modem adaptively detects the selected message carrier or V.21 control messages. If the expected carrier is detected, the modem operates as specified in the respective +FRM= or +FRH= commands. If V.21 flag preamble is detected instead, the modem issues a +FRH:3 intermediate result code, and then executes an implied +FRH=3 command.
AT Commands Reference Manual +FCL - Carrier Loss Timeout This parameter allows the DTE to select the modem’s loss-of-carrier delay between initial loss-of-carrier and qualified loss-of-carrier, when the modem will give up and exit a receive mode. Intermediate (less than FCL timeout) loss-of-carrier should be indicated by insertion of the SQ-BAD signal quality indicator in the received data stream. In unframed receive modes, if the modem detects RTC as described in Recommendation T.
AT Commands Reference Manual +FDD - Double Escape Character Replacement This parameter conditions the use of the DLE SUB pair to encode consecutive <1/0>€<1/0> in data. This may be used to prevent unbound expansion of data that contains many <1/0> patterns. Syntax +FDD= Defined Values Decimal number corresponding to the selected option.
AT Commands Reference Manual +FIT - DTE Inactivity Timeout This command specifies a DTE inactivity timeout value that allows the modem to break away from an unsuccessful connection attempt at any stage of a facsimile transfer. The DTE inactivity timer operates only while the modem is off-hook. Syntax +FIT=
AT Commands Reference Manual +FPR - Fixed DTE Rate This numeric extended-format parameter specifies the data rate at which the modem will accept commands during on-line operation. It may be used to select operation at rates at which the modem is not capable of automatically detecting the data rate being used by the DTE. Specifying a value of 0 disables the function and allows operation only at rates automatically detectable by the modem.
AT Commands Reference Manual +FMI? - Request Manufacturer Identification This command causes the modem to report the modem product manufacturer. Syntax +FMI? Typical Response CONEXANT OK +FMM? - Request Model Identification This command causes the modem to report the modem product model. Syntax +FMM? Typical Response V90 OK +FMR? - Request Revision Identification This command causes the modem to transmit one or more lines of information text identifying the modem version, revision level or date.
AT Commands Reference Manual +FLO - Flow Control This parameter allows the DTE to identify and select the type of flow control used. Syntax +FLO= Defined Values Decimal number corresponding to the selected option. 0 XON/XOFF and RTS/CTS flow control turned off. 1 Use XON/XOFF flow control in either direction. 2 Use RTS for flow control of the modem by the DTE; use CTS for flow control of the DTE by the modem.
AT Commands Reference Manual Table 4-4. Fax Class 1 Calling Sequence (Transmitting a Single Page) DTE Commands AT+FCLASS=1 Modem Responses OK ATDT Local Modem Action Remote Station Action Notes Set Class 1 Dial and send CNG Look for V.21 Detect flags CONNECT OK Answer send CED, V.21 Send HDLC flags AT+FRH=3 implied by dialing with +FCLASS=1.
AT Commands Reference Manual Table 4-5. Fax Class 1 Answering Sequence (Receiving a Single Page) DTE Commands AT+FCLASS=1 Modem Responses OK RING<- ATA CONNECT CONNECT OK AT+FRH=3 CONNECT OK Local Modem Action Remote Station Action Notes Set Class 1 detect ringing off-hook, send CED, send V.
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AT Commands Reference Manual 5 Fax Class 2 Commands The Fax Class 2 commands are summarized in Table 5-1. Table 5-1.
AT Commands Reference Manual 5.1 Command and Syntax Guidelines 5.1.1 Mode Entry Commands +FCLASS=2 - Select Facsimile Class 2 Mode +FCLASS=2 selects the Fax Class 2 Mode (see Section 3.2.1). 5.1.2 DTE Commands The ISO 646 character set (CCITT T.50 International Alphabet 5, American Standard Code for Information Interchange) is used for the issuance of commands and responses. Only the low-order 7 bits of each character are used for commands or parameters; the high order bit is ignored.
AT Commands Reference Manual For example, the command to instruct the modem to automatically answer a data or fax call and also enable reception is: AT+FAE=0; +FCR 1 Basic data mode and fax service class mode select commands are: AT+FCLASS=0 for Data Mode AT+FCLASS=1 for Service Class 1 Fax AT+FCLASS=1.0 for Service Class 1.0 Fax AT+FCLASS=2 for Service Class 2 Fax In Class 2, the DCE makes and terminates calls, manages the communication session and negotiates (T.
AT Commands Reference Manual 5.1.3 Serial Port Speed and Flow Control During fax mode, the DTE-DCE port speed is 19200 bps. The DCE provides a speed buffer of 1024 bytes and provides the DC1/DC3 (XON/XOFF) or RTS/CTS method of controlling the data into the buffer. This flow control is controlled by the &K3 or &K4 command. This method of data flow control is available only for DTE to DCE direction of data. There is no provision for data flow control from DCE to DTE.
AT Commands Reference Manual 5.1.5 Identification of T.30 Options Group 3 devices negotiate session parameters in DIS, DCS, and DTC frames. These parameters are defined in Table 5-2. 5.1.6 Session Status Reporting The DCE provides reports to the DTE on the status of a session. The DCE provides the following status reports: 1. Connection and hang up status: +FCON +FHNG:<0-255> 2. Requested DIS session parameters +FDIS: reports remote facsimile capabilities.
AT Commands Reference Manual 5.2.3 +FREV? - Identify Product Revision The +FREV? command causes the DCE to send a message identifying the DCE product model revision number. The message format is the same as the ATI3 message, e.g.: VX.X-F_A OK 5.3 Service Class 2 Action Commands These commands transfer data, and punctuate sessions. They also release specific T.30 messages. All action commands must be the last command on a command line as indicated by the terminating .
AT Commands Reference Manual 5.3.2 ATA - Answer a Call The DCE can support a DTE command to answer an incoming call using the ATA command (see Section 3.2). The DTE may issue an Answer command in response to an incoming ring. If the Answer command is unsuccessful, the DCE will report an appropriate failure or error type result code, such as NO CARRIER (see Section 3.3).
AT Commands Reference Manual Initiate Page Transmission Phase B DCE polled response: [+FCSI:] [+FDIS:] +FDCS: CONNECT - if new CSI received - if new DIS received - when ready for data After placing a call, or after finishing a document exchange, the DTE may command the DCE to re-enter T.30 Phase B to attempt to negotiate a document transmission.
AT Commands Reference Manual - Escape from Transmission The DCE may request the DTE to halt Phase C transmission, by sending a cancel character (024) to the DTE. In this case, the DTE should terminate Phase C transmission, issue , and wait for the OK response code from the DCE. Table 5-2. T.
AT Commands Reference Manual 5.3.4 +FET - Transmit Page Punctuation Syntax: +FET=[,,,] DCE response: +FPTS: - when receive from remote OK This command is used to punctuate page and document transmission after one or more +FDT commands. This command generates T.30 Post Page Messages selected by the code (Table 5-3). The +FET= command indicates that the current page is complete; no more data will be appended to it.
AT Commands Reference Manual 5.3.5 +FDR - Begin or Continue Phase C Receive Data Syntax: +FDR Default value: 3 seconds in some places The +FDR command initiates transition to Phase C data reception. This can occur after answering, dialing, a document is received, or a page is received. The DCE reports the negotiated T.30 parameters, with the remote ID information if available. When the DCE is ready to commence data transfer, it issues a CONNECT response code.
AT Commands Reference Manual Continue Document Reception The DTE may issue a +FDR command in Phase D, which releases the post page message, and indicates readiness to receive another page after receipt of a Multipage (+FET:0) or PPS-NULL (+FET:3) message.
AT Commands Reference Manual 5.3.6 +FK - Session Termination Syntax: +FK The +FK command causes the DCE to terminate the session in an orderly manner. In particular, the DCE will send a DCN message at the next opportunity and hang up. At the end of the termination process, the DCE will report the +FHNG response with result code (Table 5-5). This operation can be invoked by using the cancel character during Phase C data reception (see prior section).
AT Commands Reference Manual Table 5-5. Hang Up Status Codes Code Cause Description 0-9 Call Placement and Termination 0 Normal and proper end of connection 1 Ring Detect without successful handshake 2 Call aborted, from +FK or AN 3 No Loop Current 10-19 Transmit Phase A & Miscellaneous Errors 10 Unspecified Phase A error 11 No Answer (T.
AT Commands Reference Manual 5.4 Service Class 2 DCE Responses The DCE sends information responses to the DTE as a facsimile session proceeds. They indicate the state of the facsimile session and convey needed information. These messages are solicited messages generated in execution of DTE action commands described in Section 6.3. The DCE precedes and follows the information responses with . The DCE provides the on-line status of several session parameters when they are available during T.
AT Commands Reference Manual 5.4.6 +FCSI: - Report the Called Station ID Syntax: +FCSI: “” Called Station ID This response reports the received called station ID string, if any. This message is generated in execution of Originate, Answer, +FDT, or +FDR commands. 5.4.7 +FPTS: - Receive Page Transfer Status Syntax: +FPTS:, [,, ] The +FPTS: is generated by the DCE at the end of Phase C data reception in execution of a +FDR command.
AT Commands Reference Manual 5.4.10 +FHNG: - Call Termination with Status Syntax: +FHNG: +FHNG indicates that the call has been terminated. The hangup cause is reported and stored in the +FAXERR parameter for later inspection. The values are described in Table 5-5. +FHNG: is a possible intermediate result code to any DTE action command described in Section 6.3. It is always followed by the OK final result code.
AT Commands Reference Manual 5.5 Service Class 2 Parameters All Service Class 2 parameters can be read, written, and tested for range of legal values by the DCE. The general syntax is described in Section 6.1. Group 3 FAX devices negotiate session parameters in DIS, DCS, and DTC frames. The following parameters are provided to condition the facsimile DCE for the capabilities it will offer and to report the session settings negotiated. The three primary T.30 session parameters are +FDCC, +FDIS and +FDCS.
AT Commands Reference Manual 5.5.2 +FDIS - Current Sessions Capabilities Parameters Write syntax: +FDIS=VR,BR,WD,LN,DF,EC,BF,ST Valid values: See Table 5-2. Default values: 0,3,0,2,0,0,0,0 (9600 bps fax models) or 0,5,0,2,0,0,0,0 (14400 bps fax models) The +FDIS parameter allows the DTE to sense and constrain the capabilities used for the current session. The DCE uses +FDIS to generate DIS or DTC messages directly, and uses +FDIS and received DIS messages to generate DCS messages.
AT Commands Reference Manual Example: +FDIS=0,5,0,2,0,0,0,1 = VR = 0 BR = 5 WD = 0 LN = 2 DF = 0 EC = 0 BF = 0 ST = 1 5.5.4 98 dpi vertical resolution, 14400 bit/s 1728 pixels, unlimited length 1-D modified Huffman coding, no ECM, no BFT, 5 ms scan time. +FLID= - Local ID String Write syntax: +FLID="" Valid value: 20-character ASCII string Default value: Empty If FLID is not a null string, it generates a TSI or CSI frame. Table 3/T.30 includes digits 0-9, “+” and space.
AT Commands Reference Manual 5.5.6 +FPTS= - Page Transfer Status Write Syntax: +FPTS= Valid values: 1, 2, 3, 4, 5 Default value: 0 The +FPTS parameter contains a value representing the post page response, including copy quality and related end-of-page status. These values correspond to post page response messages defined in T.30. The receiving DCE sets this parameter after it receives a page of Phase C data.
AT Commands Reference Manual 5.5.10 +FBOR - Data Bit Order Write syntax: +FBOR= Valid values: 0, 1, 2, or 3 Default value: 0 This parameter controls the mapping between PSTN facsimile data and the DTE-DCE link. There are two choices: Direct: The first bit transferred to each byte on the DTE-DCE link is the first bit transferred on the PSTN data carrier. Reversed: The last bit transferred of each byte on the DTE-DCE link is the first bit transferred on the PSTN data carrier.
AT Commands Reference Manual 5.5.12 +FBUF? - Buffer Size The +FBUF parameter allows the DTE to determine the characteristics of the DCE's data buffer. Data buffers are used for flow control. Use of the reported values allow the DTE to transfer data without provoking XOFF. Read syntax: +FBUF? DCE response syntax: , , , where: = total buffer size = XOFF threshold = XON threshold = current buffer byte count Example: +FBUF? 512, 506, 500, 0 5.
AT Commands Reference Manual Table 5-6. Send Two Pages, 1-D, No Errors DTE Command AT+CLASS=2 AT+FLID="" AT DCE Response OK OK +FCON [+FCSI:""] +FDIS: OK AT+FDT +FDCS: CONNECT <1st page data> AT+FET=0 AT+FDT <2nd page data> AT+FET=2 Remote Station Action x Answer, Send [CED] V.
AT Commands Reference Manual Table 5-7.
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AT Commands Reference Manual 6 Voice Commands 6.1 Voice Commands Overview Voice commands are identified in Table 6-1. Table 6-1. Voice Commands Command +FCLASS +VCID +VNH +FMI? +FMM? +FMR? +FLO +VIP +VRX +VTS +VTX +VGR +VGT +VIT +VLS +VRA +VRN +VSD +VSM +VTD +VDR +VDT +VPR +VSP +VDX +VGM +VGS 100722B Function Configuration Set Mode Caller ID (CID) Automatic Hang-up control Manufacturer Identification Product Identification Version, Revision, etc.
AT Commands Reference Manual 6.1.1 Shielded Event Codes Sent to the DTE Table 6-2 lists the supported shielded codes sent to the DTE in the expression . The number in parenthesis in the second column corresponds to the T.50 equivalent. Table 6-2. Supported Shielded Codes Sent to the DTE Code 6-2 T.50 Equivalent (1/0) X .
AT Commands Reference Manual 6.1.2 Shielded Codes Sent to the Modem (DCE) Table 6-3 lists the supported shielded codes sent to the modem in the expression . The number in parenthesis in the second column corresponds to the T.50 equivalent. Table 6-3.
AT Commands Reference Manual 6.2 Voice Commands 6.2.1 Configuration Commands +FCLASS=8 - Select Voice Mode +FCLASS=8 selects the Voice Mode. The Voice Mode commands and responses described in this section are applicable when command +FCLASS=8. (See Section 3.2.1 for the definition of the FCLASS command.) +VNH - Automatic Hang-up Control This command enables or disables automatic hangups. Syntax +VNH= Defined Values Decimal number corresponding to the selected option (see Table 6-4).
AT Commands Reference Manual Reporting Current or Selected Values Command: +VNH? Response: Example: 0 For the default setting. Reporting Supported Range of Parameter Values Command: +VNH=? Response: ( range) Example: (0-2) Result Codes 6.2.2 OK = 0-2. ERROR Otherwise. Voice Commands +VIP - Voice Initialize All Parameters This command causes the modem to initialize all voice parameters to their default values. Syntax +VIP Result Code OK ERROR If not in Voice Mode.
AT Commands Reference Manual +VTS - Send Voice Tone(s) This command causes the modem to send DTMF digit or hookflash tones with the duration specified by +VTD, to send DTMF digit or hookflash tones with duration specified by this command, or to send single or dual tone frequencies with duration specified with this command. Syntax +VTS= Defined Values The tone generation consists of elements in a list where each element is separated by a comma. Each element can be: 1.
AT Commands Reference Manual Reporting Supported Range of Parameter Values Command: +VTS=? Response: ( range), ( range), ( range) Example: (200-3000),(200-3000),(0-255) OK Result Codes OK Valid command. ERROR The command is invalid, or a selected frequency is out of range. Example 1. This example illustrates tone generation without using any null elements. The command example is followed by a description of command execution.
AT Commands Reference Manual +VTX - Start Modem Transmit (Playback) This command causes the modem to start the voice transmission process. Syntax +VTX Result Codes CONNECT The modem accepts the command. ERROR The modem is not connected to at least one off-hook telephone line or one non-telephone line. +VGR - Voice Gain Receive (Record Gain) This command causes the modem to set the gain for received voice samples.
AT Commands Reference Manual +VGT - Voice Gain Transmit (Playback Volume) This command causes the modem to set the volume level. Syntax +VGT= Defined Values Decimal number corresponding to the volume level. Reporting Current or Selected Values Command: +VGT? Response: Example: 128 For the default setting. Reporting Supported Range of Parameter Values Command: +VGT=? Response: range Example: 0-255 Result Codes 100722B OK = 0-255.
AT Commands Reference Manual +VIT - Voice Inactivity Timer (DTE/Modem) This command sets the modem’s initial value for the DTE/modem inactivity timer. Syntax +VIT= Defined Values Decimal number corresponding to the time in units of 1.0 second. A value of 0 disables the timer. Reporting Current or Selected Values Command: +VIT? Response: Example: 0 For the default setting.
AT Commands Reference Manual +VLS - Analog Source/Destination Selection This command causes the modem to select one or more source/destinations of the analog data. Syntax +VLS=
AT Commands Reference Manual Result Codes OK
AT Commands Reference Manual Table 6-6. Events Detectable in the Voice Mode per V.253 Event Number Event Description Event Reporting 0 Caller Id Report Message 1 DID Report Message 2 Distinctive Ringing Pattern 3 RING Simple 4 DTMF Received Simple 5 Receive Buffer Overrun Simple 6 Facsimile Calling (e.g., 1100 Hz) Simple 7 Data Calling (e.g.
AT Commands Reference Manual +VRA - Ringback Goes Away Timer This command sets the length of time the modem will wait between ringbacks during call origination before the modem can assume that the remote station has gone off-hook. Syntax +VRA= Defined Values Decimal number (0-255) specifying the silence interval time in units of 0.10 second between the end of one ring interval and the start of the next ring interval.
AT Commands Reference Manual +VRN - Ringback Never Appeared Timer This command sets the length of time the modem will wait between ringbacks during call origination before the modem can assume that the remote station has gone off-hook. Syntax +VRN= Defined Values Decimal number specifying the time period, in units of 1.0 second, that the modem will wait for Ringback during call origination. A value of 0 forces the modem to report the OK result code immediately after dialing.
AT Commands Reference Manual +VSD - Silence Detection (Quiet and Silence) This command causes the modem to set the silence detection sensitivity and the required period of silence before the modem reports silence detected at the end of a voice receive either with the “Presumed End of Message” (QUIT) or “Presumed Hangup (SILENCE) event reports. Syntax +VSD=, Defined Values Decimal number corresponding to the selected parameter.
AT Commands Reference Manual +VSM - Compression Method Selection This command causes the modem to set the voice compression method, the silence compression sensitivity, and the voice sampling rate. Syntax +VSM=,,, Defined Values Decimal number identifying the compression method. containing the supported range of voice samples per second of the analog signal.
AT Commands Reference Manual Example: 1,"UNSIGNED PCM",8,0,8000,0,0 129,"IMA ADPCM",4,0,8000,0,0 130,"UNSIGNED PCM",8,0,8000,0,00 140,"2 Bit ADPCM",2,0,8000,0,0 141,"4 Bit ADPCM",4,0,8000,0,0 OK Result Codes OK Valid range. ERROR Otherwise, or if not in Voice Mode. +VTD - Beep Tone Duration Timer This command causes the modem to set the default DTMF/tone generation duration. Syntax +VTD= Defined Values Decimal number specifying the default DTMF/tone generation duration in units of 0.
AT Commands Reference Manual +VDR - Distinctive Ring This command causes the modem to enable or disable reporting of the ring cadence information and to control the timing of the RING event code report if ring cadence reporting is enabled. Syntax +VDR=, Defined Values Decimal number corresponding to the selected option. 0 The modem will not report ring cadence information. 1 The modem will report ring cadence information as specified for the subparameter.
AT Commands Reference Manual +VDT - Control Tone Cadence Reporting This command is included for compatibility only and has no effect other than returning a result code. This command allows the modem to enable or disable reporting of the control tone cadence information in the frequency band used by the Ringback/Remote Ring, BUSY, and reorder/Fast Busy tones (usually in the 300 to 600 Hz range). Syntax +VDT=, Defined Values Decimal number corresponding to the selected option.
AT Commands Reference Manual +VPR - Select DTE/Modem Interface Rate (Turn Off Autobaud) This command selects the DTE/modem interface rate.
AT Commands Reference Manual 6.2.3 Speakerphone Commands +VSP - Speakerphone ON/OFF This command turns the speakerphone ON or OFF Syntax +VSP= Defined Values Decimal number corresponding to the selected option. 0 The speakerphone function is OFF. (Default.) 1 The speakerphone function is ON. Reporting Current or Selected Values Command: +VSP? Response: Example: 0 For the default setting.
AT Commands Reference Manual +VDX - Speakerphone Duplex Mode This command selects speakerphone full duplex mode. Syntax +VDX= Defined Values Decimal number corresponding to the selected option. 1 The speakerphone mode is full duplex. Reporting Current or Selected Values Command: +VDX? Response: Example: 1 For the default setting. Reporting Supported Range of Parameter Values Command: +VDX=? Response: ( range) Example: (1) Result Codes 100722B OK = 1.
AT Commands Reference Manual +VGM - Microphone Gain This command causes the modem to set the microphone gain of the speakerphone function. Syntax +VGM= Defined Values Decimal number between 0 and 255 corresponding to the gain. Reporting Current or Selected Values Command: +VGM? Response: Example: 64 For the default setting. Reporting Supported Range of Parameter Values Command: +VGM=? Response: range Example: 0-255 Result Codes 6-24 OK = 0-255.
AT Commands Reference Manual +VGS - Speaker Gain This command causes the modem to set the speaker gain of the speakerphone function. Syntax +VGS= Defined Values Decimal number between 0 and 255 corresponding to the gain. Reporting Current or Selected Values Command: +VGS? Response: Example: 128 For the default setting. Reporting Supported Range of Parameter Values Command: +VGS=? Response: range Example: 0-255 Result Codes 100722B OK = 0-255.
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Index # #UD – Last Call Status Report ....................................... 3-78 $ $F – FastConnect Control .............................................. 3-88 % %7 - Plug and Play Serial Number ................................. 3-12 %8 - Plug and Play Vendor ID and Product Number ...... 3-13 %C - Enable/Disable Data Compression ........................ 3-71 %E - Enable/Disable Line Quality Monitor ...................... 3-55 %L - Report Line Signal Level ........................................
+FPOLL - Indicate Polling Request ................................ 5-17 +FPR - Fixed DTE Rate ................................................. 4-17 +FPTS: - Receive Page Transfer Status ........................ 5-16 +FPTS: - Transmit Page Transfer Status ....................... 5-16 +FPTS= - Page Transfer Status ..................................... 5-21 +FREV? - Identify Product Revision ................................. 5-6 +FRH - Receive Data with HDLC Framing .....................
S40 - General Bit Mapped Options Status.................... 3-108 S41 - General Bit Mapped Options Status.................... 3-109 S46 - Data Compression Control.................................. 3-109 S48 - V.42 Negotiation Control..................................... 3-109 S5 - Backspace Character ........................................... 3-100 S6 - Wait Time before Blind Dialing or for Dial Tone..... 3-100 S7 - Wait Time for Carrier, Silence, or Dial Tone..........
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