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Synxcom SM9256D User Manual

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SM9256D and SM9234D Modems
User's Guide
0049-2500-001 Rev B

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  • Page 1 SM9256D and SM9234D Modems User’s Guide 0049-2500-001 Rev B...
  • Page 2 Synxcom Corporation will makes best efforts to update or keep current the information in this User’s Guide, and reserves the right to make changes to this User’s Guide and/or product without notice.
  • Page 3 FCC Requirements This device complies with Part 15 Class A of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 Class A of the FCC Rules.
  • Page 4 If they do, you will be notified in advance to give you an opportunity to maintain uninterrupted telephone service. If you experience trouble with this telephone equipment, please contact Synxcom Corporation, 1000 Dove Street, Newport Beach, CA 92660, Phone (949) 677-6204 for information on obtaining service or repairs.
  • Page 5 local or long-distance transmission charges.) Page v...

  • Page 7: Table Of Contents

    Contents FEATURES ................................ 15 MODEL NUMBERS AND ORDER INFORMATION..................16 UNPACKING YOUR MODEM ........................19 ADDITIONAL ITEMS YOU NEED ......................... 19 SETTING-UP AND INSTALLING YOUR MODEM ..................19 INSTALLING THE DRIVER ........................... 22 XP..............................22 INDOWS 2000..............................22 INDOWS LEDS .................................. 23 MODEM OPERATION.............................
  • Page 8 Additional Syntax Rules ..........................40 ............................40 SSUING OMMANDS ........................... 40 XECUTING OMMANDS Aborting Commands ........................... 41 Handling of Invalid Numbers and S-Parameter Values................41 ............................41 ODEM ESPONSES Responses ..............................42 Extended Syntax Result Codes ........................43 +<name>: <compound_value>Information Text Formats for Test Commands ........... 45 DATA COMMAND SET ...........................
  • Page 9 P - Set Pulse Dial Default ........................... 72 A - Answer ..............................73 H - Disconnect (Hang-Up) .......................... 73 O - Return to On-Line Data Mode....................... 74 L - Speaker Volume............................. 74 M - Speaker Control ........................... 74 &G - Select Guard Tone..........................75 &P - Select Pulse Dial Make/Break Ratio ....................
  • Page 10 @M - Initial Cellular Power Level Setting ....................115 :E - Compromise Equalizer Enable Command ..................116 FastConnect Commands..........................116 $F – FastConnect Control......................... 116 V.92 +P and –Q Commands........................117 +PCW - Call Waiting Enable........................117 +PMH - Modem-on-Hold Enable......................117 +PMHT –...
  • Page 11 S86 - Call Failure Reason Code........................ 135 S86=11 No sync information from the remote modem................135 S86=26 Remote hangup detected......................136 S91 - PSTN Transmit Attenuation Level ....................137 S92 - Fax Transmit Attenuation Level ....................... 137 S95 - Extended Result Codes Control......................137 S210 –...
  • Page 12 Mode Entry Commands..........................168 +FCLASS=2 - Select Facsimile Class 2 Mode ..................168 DTE Commands............................168 Serial Port Speed and Flow Control......................170 Auto Answer.............................. 171 Identification of T.30 Options ........................171 Session Status Reporting ........................... 171 Procedure Interrupt Negotiation ....................... 172 ..................
  • Page 13 <DLE> Shielded Codes Sent to the Modem (DCE) ................... 196 ............................196 OICE OMMANDS Configuration Commands ......................... 196 +FCLASS=8 - Select Voice Mode ......................196 +VNH - Automatic Hang-up Control......................196 Voice Commands ............................197 +VIP - Voice Initialize All Parameters...................... 197 +VRX - Start Modem Receive (Record).....................

  • Page 15: Features

    Chapter 1 Introduction he Synxcom SM9256D and SM9234D are industrial grade standalone data/fax modem that deliver outstanding performance, transmitting data at the highest rates available over the public switched telephone networks (PSTN) today. The SM9256D, supports V.92 & V34 standards, offers asynchronous line speeds of up to 56kbps. The SM9234D supports V.34 and line speeds of up to 33.6kbps.

  • Page 16: Model Numbers And Order Information

    Introduction Model Numbers and Order Information Model SM9256D: V92/V34/V32bis/V32/V22bis (56K) Stand-alone with AC power module 90 to 264 VAC or 100-400 VDC Model SM9256D-DC: V92/56K/V34/V32bis/V32/V22bis Stand-alone, DC power, 10-48 VDC Model SM9234D: V34/V32bis/V32/V22bis (33.6K) Stand-alone with AC power module 90 to 264 VAC or 100-400 VDC Model SM9234D-DC: V34/V32bis/V32/V22bis (33.6K)
  • Page 17 Introduction Page 17...

  • Page 19: Unpacking Your Modem

    A standard wall-mounted telephone jack (RJ-11C) located within 6 feet of your computer For RS-232 interface, a shielded serial cable with a 9-pin male connector for connecting to your SM9256D/SM9234D. The connector on the other end of the cable should match the requirements of your computer or Data Terminal Equipment (DTE).
  • Page 20 Installation Your SM9256D and SM9234D support RTU/DTE with either RS-232 or RS-485 interface for communications. The modem is set to use the RS-232 interface (DB-9 connector) as the default interface from the factory. If you do not use RS-485/RS-422 option of the modem, skip this section and continue the installation with the “Installing Your Modem”...

  • Page 21: Installing Your Modem

    Installation Installing Your Modem The following procedure describes how to install your SM9256D modem. You perform these procedures using the connectors and jacks on the back of your SM9256D modem (see Fig. 2 on page 17). Turn off your computer.

  • Page 22: Installing The Driver

    Installation Installing the Driver After you install your SM9256D, use the appropriate procedure to install the modem driver. The driver is supplied on the CD that came with your SM9256D modem. Windows XP If your computer contains the Microsoft Windows XP operating system, use the following procedure to install the modem driver.

  • Page 23: Leds

    Auto-Answer Mode By default, the SM9256D modem is set up to not auto-answer incoming calls. If you want the modem to answer calls automatically, set the S0 register to a value other than its default value of zero. For example, issuing the AT command ATS0=1 configures the modem to auto-answer...
  • Page 24 Installation calls after the first ring. These commands are typed from your computer or DTE keyboard using terminal-emulation software such as HyperTerminal. If you change the auto-answer parameter, the new setting remains in effect until your modem is powered-off. The next time your modem is powered-up, auto-answer is disabled again. To keep auto-answer enabled each time the modem is powered-up, use the AT&W command to save your changes in the modem’s nonvolatile memory.

  • Page 25: Call Answer Testing

    Configure your SM9256D modem to auto-answer incoming calls, as described under “Modem Operation” on page 13. Use a telephone to call the SM9256D modem. Listen to the call to verify that the SM9256D modem answers the call with its answer tone and performs its handshaking sequence in an attempt to make a data connection.
  • Page 27 Using the Modem’s Auto-Connect Feature Chapter 3 Using the Modem’s Security Features This section is available with the security modems only Page 27...
  • Page 28 Using the Modem’s Auto-Connect Feature Page 28...

  • Page 29: Storing Telephone Numbers

    When the $DL command is used, your SM9256D modem automatically dials the first of four telephone numbers you have stored using the &Zn=x command. If the call fails or is disconnected, your modem waits a user-defined number of seconds before redialing the number.

  • Page 30: Configuring The $Dl Timeout

    Using the Modem’s Auto-Connect Feature AT&Z3=9,5552468 Stores dial string AT&Z3=9,5552468 in nonvolatile memory location 2. Configuring the $DL Timeout The $DL timeout determines how long your modem waits between dialing attempts when a call dialed with the $DL command does not establish a data connection with the remote modem. This timeout value is controlled by Register S32.

  • Page 31: Syntax And Procedures

    AT Commands Appendix A AT Commands 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.

  • Page 32: Command Line General Format

    AT Commands Command Line General Format A command line is made up of three elements: the prefix, the body, and the termination character. The command line prefix consists of the characters "AT" or "at". To repeat the execution of the previous command line, the characters "A/" or "a/" are used without typing the command line prefix.

  • Page 33: Repeating A Command Line

    AT Commands Repeating a Command Line If the prefix "A/" or "a/" is received, the modem immediately executes once again the body of the preceding command line. No editing is possible, and no termination character is necessary. A command line may be repeated multiple times in this manner.

  • Page 34: S Parameters

    AT Commands <number> may be a string of one or more characters from "0" through "9" representing a decimal integer value. Commands that expect a <number> are noted in the description of the command. If a command expects <number>and it is missing (<command>...

  • Page 35: Extended Syntax Commands

    AT Commands Extended Syntax Commands 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)
  • Page 36 AT Commands Binary numeric constants consist of a sequence of one or more of the characters "0" and "1". In all numeric constants, the most significant digit is specified first. Leading "0" characters are ignored by the modem. No spaces, hyphens, periods, commas, parentheses, or other generally-accepted numeric formatting characters are permitted in numeric constants;...

  • Page 37: Action Commands

    AT Commands Action Commands Action Execution Command Syntax There are two general types of action commands: those that have associated sub parameter values that affect only that invocation of the command, and those that have no sub parameters. If sub parameters are associated with a command, the definition of the action command indicates, for each sub parameter, whether the specification of a value for that sub parameter is mandatory or optional.

  • Page 38: Parameter Commands

    AT Commands Action Test Command Syntax The DTE may test if an action command is implemented in the modem by using the syntax: +<name>=? If the modem does not recognize the indicated name, it returns an ERROR result code and terminates processing of the command line. If the modem does recognize the action name, it returns an OK result code.
  • Page 39 AT Commands The following syntax is used for parameters that accept a single value: +<name>=[<value>] The following syntax is used for parameters that accept more than one value: +<name>=[<compound_value>] For each implemented parameter, if all mandatory values are specified, and all values are valid according to the definition of the parameter, the specified values are stored.

  • Page 40: Additional Syntax Rules

    AT Commands Additional Syntax Rules Concatenating Commands after Extended Syntax Commands Additional commands may follow an extended-syntax command on the same command line if a semicolon (";") is inserted after the preceding extended command as a separator. The semicolon is not necessary when the extended syntax command is the last command on the command line.

  • Page 41: Aborting Commands

    AT Commands result codes for preceding commands are suppressed. If no commands appear in the command line, the OK result code is issued. Aborting Commands Some action commands that require time to execute may be aborted while in progress; these are explicitly noted in the description of the command. Aborting of commands is accomplished by the transmission from the DTE to the modem of any character.

  • Page 42: Responses

    AT Commands When the modem transitions from the command state or online command state to the online data state, the result code CONNECT should be issued at the bit rate and parity used during the command state. When the modem transitions from the online data state to the command state or online command state, the result codes should be issued at the bit rate used during the online data state.

  • Page 43: Extended Syntax Result Codes

    AT Commands command, the modem switches from command state to online data state, and issues a CONNECT result code. This is an intermediate result code for the modem because it cannot accept commands from the DTE while in online data state.
  • Page 44 AT Commands A single space character separates the colon character from the <value>; no space appears between the result code name and the colon. If multiple values are to be reported with the result code, the form is: +<name>: <compound_i> Fax Modes.

  • Page 45: Name>: Information Text Formats For Test Commands

    AT Commands +<name>: <compound_value>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 <CR> characters in very long information text responses in order to avoid overrunning DTE receive buffers.
  • Page 46 AT Commands This indicates that the first subparameter accepts only the value 0, the second accepts any value from 1 through 3 inclusive, and the third subparameter accepts any of the values 0, 4, 5, 6, 9, 11, or 12. Page 46...

  • Page 47: Data Command Set

    AT Commands Data Command Set 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. The default values are typical of a fully configured modem supporting all data rates and options.

  • Page 48: Fclass - Select Active Service Class

    AT Commands Syntax Z<value> Defined Values <value> Decimal number corresponding to the selected profile. Soft reset and restore stored profile 0. Soft reset and restore stored profile 1. Result Codes <value> = 0 or 1. ERROR Otherwise. +FCLASS - Select Active Service Class This command selects the active service class (mode).

  • Page 49: Vcid - Caller Id (Cid)

    AT Commands +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. Syntax VCID=<pmode> Defined Values <pmode> Decimal number corresponding to the selected option.

  • Page 50: N - Operating Mode

    AT Commands \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. \N<mode> Syntax Defined Values <mode> Decimal number which corresponds to the selected mode. Selects normal speed buffered mode (disables error- correction mode).

  • Page 51: Gmi - Request Manufacturer Identification

    AT Commands where: RevisionName = product family name_firmware version, i.e., ACF3. The firmware version is in the form VX.XXX. Example: ACF3_V1.000 Modulation = V90, V34, or V32 for V.92/V.90, V.34, or V.32bis, respectively. Model = Identifies RAM/ROM configuration. For the SmartSCM, the codes are in the form RevisionName-Modulation, where: RevisionName = masked firmware code version.

  • Page 52: Gmm - Request Model Identification

    AT Commands +GMM - Request Model Identification This command causes the modem to report the modem product. +GMM Syntax Typical Response +GMM: V90 +GMR - Request Revision Identification This command causes the modem to report the modem version, revision level or date.

  • Page 53: F - Restore Factory Configuration (Profile)

    AT Commands The supported countries are: Country Code Country Country Australia Hong Kong Norway Austria Hungary Philippines Belgium India Poland Brazil Ireland Portugal Bulgaria Israel Russia Canada Italy Singapore China Japan South Africa Czech and Slovak Federal Korea Spain Republic Denmark Luxembourg Sweden...

  • Page 54: T - Local Analog Loopback Test

    AT Commands &T - Local Analog Loopback Test The modem will perform the local analog loopback test if &T1 is selected. The test can be run only when in an asynchronous operation in non-error-correction mode (normal), e.g., AT&Q6. To terminate the test in progress, the escape sequence must be entered first.

  • Page 55: Plug And Play Serial Number

    AT Commands 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.) &Z<value> Syntax Defined Values <value> Decimal number from 0 to 3 corresponding to the selected telephone number.
  • Page 56 AT Commands modem firmware (data) to the host computer. Uploading new firmware to the flash memory or downloading existing firmware from the flash memory device is a two- step process When the AT** command is issued, the modem firmware boot loader is invoked and the user will first load a flash load module (FLM) into the modem's RAM.
  • Page 57 AT Commands an industry standard communications software or an equivalent process (ensure that all ASCII translation or pacing is turned off). After the FLM has been loaded, if uploading new firmware to the modem, perform an XMODEM upload of the new modem firmware hex file (e.g., 206s4712.S37) from the host computer to the modem RAM using an industry standard communications software or an equivalent process.

  • Page 58: Dte-Modem Interface Commands

    AT Commands function properly. In the instance that there is a failure during the download or upload process, the modem will be in a “flash rescue mode”. In this mode, the modem will respond “OK” to all AT commands, but will only take action on the AT** command, so a new attempt to upload or download can be initiated.

  • Page 59: W - Connect Message Control

    AT Commands Enables short-form (terse) result codes. Line feed is not issued before a short-form result code. Enables long-form (verbose) result codes. (Default.) Result Codes <value> = 0 or 1 ERROR Otherwise. W - Connect Message Control This command, along with S95, bits 0, 2, 3, and 5 (bits 2, 3, and 5 can be written directly by the host or by the +MR, +ER, and +DR commands, respectively), control the format of CONNECT messages (see Table A-2).
  • Page 60 AT Commands X<value> Syntax Defined Values <value> Decimal number corresponding to the option. 0 Disables reporting of busy tones unless forced otherwise by country requirements; send only OK, CONNECT, RING, NO CARRIERERROR, and NO ANSWER result codes. Blind dialing is enabled/disabled by country parameters.
  • Page 61 AT Commands Table A-2. Result Codes Short Long Form n Value in ATXn Command Notes Form +FCERROR CONNECT RING NO CARRIER ERROR CONNECT 1200 NO DIAL TONE BUSY NO ANSWER CONNECT 600 CONNECT 2400 CONNECT 4800 CONNECT 9600 CONNECT 7200 CONNECT 12000 CONNECT 14400 CONNECT 19200...
  • Page 62 AT Commands Table A-2. Result Codes (Continued) Short Long Form n Value in ATXn Command Notes Form +DR: ALT +DR: V42B +DR: NONE +ER: NONE +ER: LAPM +MCR: 31200 Note 2 +MCR: 33600 Note 2 +ER: ALT +ER: ALT- CELLULAR LINE IN USE CONNECT 33600 Note 2...

  • Page 63: C - Rlsd (Dcd) Option

    AT Commands Table A-2. Result Codes (Continued) Short Long Form N Value in ATXn Command Notes Form CONNECT 40000 Note 3 CONNECT 42000 Note 3 CONNECT 44000 Note 3 CONNECT 46000 Note 3 CONNECT 48000 Note 3 CONNECT 50000 Note 3 CONNECT 52000 Note 3 CONNECT 54000...

  • Page 64: D - Dtr Option

    AT Commands 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<value> Defined Values <value> Decimal number corresponding to the option. 0 RLSD remains ON at all times. RLSD follows the state of the carrier.

  • Page 65: K - Flow Control

    AT Commands &K - Flow Control This command defines the DTE/DCE (terminal/modem) flow control mechanism. The parameter value, if valid, is written to S39 bits 0, 1, and 2. &K<value> Syntax Defined Values <value> Decimal number corresponding to the option. Disables flow control.

  • Page 66: Q - Sync/Async Mode

    AT Commands <value> = 0 to 3 (SmartACF and SmartACFL) <value> = 0 (SmartSCM ERROR Otherwise. &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 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.

  • Page 67: R - Rts/Cts Option

    AT Commands &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<value> Defined Values <value>...

  • Page 68: Ipr - Fixed Dte Rate

    AT Commands transmit clock signal on the XTCLK input of the serial interface. The modem applies this clock to the TXCLK output at the serial interface. Selects slave receive timing. The modem derives the transmit clock signal from the incoming carrier and applies it to the TXCLK output at the serial interface.

  • Page 69: Ifc - Dte-Modem Local Flow Control

    AT Commands +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.

  • Page 70: Call Control

    AT Commands Response: +ILRR: (<value> range) Example: +ILRR: (0,1) Reported Rate The <rate> reported represents the current (negotiated or renegotiated) DTE- modem rate. If enabled, the intermediate result code is transmitted after any modulation, error control or data compression reports are transmitted, and before any final result code (e.g., CONNECT) is transmitted.
  • Page 71 AT Commands the NO CARRIER message. If the modem has finished dialing, it proceeds as if the +FRH=3 command has been issued. (Refer to the +FRH command to determine how the modem behaves following this stage.) Dial Modifiers The valid dial string parameters are described below. Punctuation characters may be used for clarity, with parentheses, hyphen, and spaces being ignored.

  • Page 72: T - Set Tone Dial Default

    AT Commands & 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...

  • Page 73: A - Answer

    AT Commands This command may not be permitted in some countries. Result Code A - Answer The modem will go off-hook and attempt to answer an incoming call if correct conditions are met. Upon successful completion of answer handshake, the modem will go on-line in answer mode.

  • Page 74: O - Return To On-Line Data Mode

    AT Commands O - Return to On-Line Data Mode This command determines how the modem will enter the on-line data mode. If in the on-line 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.

  • Page 75: G - Select Guard Tone

    AT Commands Speaker is always off. Speaker is on during call establishment, but off when receiving carrier. (Default.) Speaker is always on. Speaker is off when receiving carrier and during dialing, but on during answering. Result Codes <value> = 0 to 3. ERROR Otherwise.

  • Page 76: V1 - Display Last Connection Statistics

    AT Commands 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.

  • Page 77: Single Line Connect Message Enable

    AT Commands Line QUALITY....038 Rx LEVEL....015 Highest Rx State.... 67 Highest TX State.... 67 EQM Sum..... 00B4 Min Distance....0000 RBS Pattern....00 Rate Drop....00 Digital Loss....2000 Local Rtrn Count.... 00 Remote Rtrn Count... 00 Flex 9481814347C4 RBS Pattern: Shows which bits are being robbed in the least significant 6 bytes, e.g., 03 indicates 2 robbed bits in bit positions 0 and 1.

  • Page 78: L - Report Line Signal Level

    AT Commands settings V (Verbose) and Q (Quiet). In Non-Verbose mode (V0), single line connect messages are disabled and a single numeric result code is generated for CONNECT DTE. When single line connect messages are enabled, there are no CARRIER, PROTOCOL (+ER:), or COMPRESSION (+DR:) messages apart from the fields described below.

  • Page 79: B - Display Blacklisted Numbers

    AT Commands *B - Display Blacklisted Numbers This command requests the modem to return a list of blacklisted numbers to the DTE. The format of the response is shown by the example below. Permanently forbidden numbers as defined by country requirements will not appear on this list. If no numbers are blacklisted, only the OK result code is issued.
  • Page 80 AT Commands 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=<value> Defined Values <value> Decimal number corresponding to the selected bit-mapped options. The bit fields are defined as follows: Bit 0 Line-In-Use detection enable/disable.
  • Page 81 AT Commands If the local handset is picked up while the modem is off-hook, the modem will do a link-disconnect, flash the hook for 1.5 seconds, then connect the local handset to the line. At this point, the user dial tone should be on the local handset. The disconnect reason in S86=25.
  • Page 82 AT Commands CARRIER message to the DTE. A result code of 25 will be left in S86 register. After 2 seconds, the local handset will be connected to the telephone line so the user hears the dial tone. 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 Clear down to the remote modem and then immediately hang-up.
  • Page 83 AT Commands If the modem is off-hook and the remote user goes on-hook, the modem issues a <DLE>P to the DTE. The application software should then hang up the line (VLS=0). Examples User is talking on an extension and the modem tries to dial AT-STE=7 ATDT555-1212 LINE-IN-USE...
  • Page 84 AT Commands ATS86=? 500ms after no carrier a dial tone is heard on the local handset Page 84...
  • Page 85 AT Commands Modem is in answer machine mode and an extension goes off-hook AT-STE=2 AT+FCLASS=8 <DLE>h Local handset on-hook <DLE>R Ring AT+VLS=1 AT+VSM=1,7200,0,0 T+VTX Starts to play greeting message <DLE>P User picks up extension <DLE>! DTE send abort to end playback AT+VLS=0 DTE hangs up Automated system that needs to periodically use the line while giving the voice user the...

  • Page 86: Modulation Control Commands

    AT Commands 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=[<carrier>[,<automode>[,<min_tx_rate>[,<max_tx_rate>[,<min_rx_rate> [,<max_rx_rate>]]]]]] Where possible <carrier>, <min_tx_rate>, <max_tx_rate>, <min_rx_rate>, and <max_rx_rate> values are listed in Table A-3. Table A-3.
  • Page 87 AT Commands example, modem models supporting V92 may not support K56. Page 87...
  • Page 88 AT Commands Defined Values <carrier> A string which specifies the preferred modem carrier to use in originating or answering a connection. <carrier> values are strings of up to eight characters, consisting only of numeric digits and upper case letters. <carrier> values for ITU standard modulations take the form: <letter><1-4 digits><other letters as needed>.

  • Page 89: Mr - Modulation Reporting Control

    AT Commands +MR - Modulation Reporting Control This extended-format numeric parameter controls whether or not the extended- format +MCR:<carrier> and +MRR:<rate> intermediate result codes are transmitted from the modem to the DTE. If enabled, +MCR:<carrier> and +MRR:<rate> intermediate result codes represent the current (negotiated or renegotiated) modulation <carrier>...

  • Page 90: Mrr: Report Syntax

    AT Commands +MRR: Report Syntax Response: +MRR: <tx_rate>,<rx_rate> <tx_rate> Decimal transmit rate in bits/s. <rx_rate> 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).

  • Page 91: U - Select Μ-Law Or A-Law Codec Type

    AT Commands %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. %U<value> Syntax Defined Value <value>...

  • Page 92: Error Control Command

    AT Commands Error Control Command +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.

  • Page 93: Eb - Break Handling In Error Control Operation

    AT Commands LAPM error control required; disconnect if error control is not established. MNP error control required; disconnect if error control is not established. Initiate V.80 Synchronous Access Mode when connection is completed, and Data State is entered (see +ESA and +ITF commands). 9Initiate Frame Tunneling Mode when connection is complete, and Data Mode is entered...

  • Page 94: Esr - Selective Repeat

    AT Commands Reporting Current or Selected Values Command: +EB? Response: +EB: <break_selection>,<timed>,<default_length><CR> Example: +EB: 0,0,0 For default settings. Reporting Supported Range of Parameter Values Command: +EB=? Response: +EB: (<break_selection> range),(<timed> range), (default_length> range) Example: +EB: (0),(0),(0) +ESR - Selective Repeat This extended-format numeric parameter controls the use of the selective repeat (SREJ) option in V.42.

  • Page 95: Er:

    AT Commands +ER: <value> +ER=[<value>] Syntax Defined Value <value> A decimal number corresponding to the selected error control option: Error control reporting disabled (no +ER intermediate result code transmitted). (Default.) Error control reporting enabled (+ERintermediate result code transmitted). Reporting Current or Selected Values Command: +ER? Response:...

  • Page 96: B - Transmit Break To Remote

    AT Commands when the local DTE requests call disconnection. <timer> Decimal number 0 specifying that the modem will not attempt to deliver the buffered data before abandoning the attempt and discarding remaining data. Reporting Current or Selected Values Command: +ETBM? Response: +ETBM: <pending_TD>,<pending_RD>,<timer>...

  • Page 97: K - Mnp Extended Services

    AT Commands Send break to remote modem immediately. Same as 0. Send break to remote modem in sequence with transmitted data. (Default.) The second case is where the modem is in the on-line command state (waiting for AT commands) during a data connection, and the \B is received in order to send a break to the remote modem: Clear data buffers and send break to remote modem.

  • Page 98: Data Compression Commands

    AT Commands 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. It accepts four numeric subparameters: +DS=[<direction>[,<compr_neg>[,<max_dict>[,<max_string>]]] Syntax Defined Value...
  • Page 99 AT Commands operation of the data compression function; from the DTE point of view. Negotiated, no compression. Transmit only. Receive only. Both directions, accept any direction. (Default.) <compress_negotiat Decimal number that specifies whether or not the modem ion> should continue to operate if the desired result is not obtained.

  • Page 100: Dr - Data Compression Reporting

    AT Commands +DR - Data Compression Reporting This extended-format numeric parameter controls whether or not the extended- format +DR: intermediate result code is transmitted from the modem to the DTE. S95, bit 5 is reset to 0 for +DR=0 and is set to a 1 for +DR=1. The more recent setting of +DR or S95, bit 5, and the W command setting, determines the actual data compression result code reporting (see S95 Parameter and W Command).

  • Page 101: C - Enable/Disable Data Compression

    AT Commands %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<value> Defined Value <value>...

  • Page 102: A8I: - Ci Signal Indication

    AT Commands Decimal number which enables/disables issuance of +A8x indications during modem-controlled V.8 answer negotiation. Enable DCE-controlled V.8 answer negotiation with +A8x indications. <v8cf Set the V.8 CI signal call function to the hexadecimal octetXY. (Default.) <v8b> Decimal number which enables/disables V.8bis negotiation. Disable V.8bis negotiation.

  • Page 103: Synchronous Access Mode Commands

    AT Commands Synchronous Access Mode Commands Three commands support Synchronous Access Mode: 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.80 (DATA COMMUNICATION OVER THE TELEPHONE NETWORK;...

  • Page 104: H - Enable/Disable Rpi

    AT Commands commanded. <crc_type> Specifies the CRC polynomial used while operating in Framed sub- Mode. The options are: CRC generation and checking disabled (default). In Framed sub-Mode, the 16-bit CRC is generated by the modem in the transmit direction, and checked by the modem in the receive direction.

  • Page 105: Itf - Transmit Flow Control Thresholds

    AT Commands or WinRPI95 driver software is installed in the PC. Reserved Reserved Result Codes 0 to 3, 11, 16, 17 ERROR Otherwise. +ITF - Transmit Flow Control Thresholds The +ITF command determines the flow control thresholds used by the modem for transmit data from the DTE.

  • Page 106: Diagnostic Commands

    AT Commands +ITF? +ITF: (0-255),( 0-255),(0) The maximum reported <off> value is the input transmit data buffer level at which the modem signals a transmit data overrun indication to the DTE. Diagnostic Commands #UD – Last Call Status Report #UD is an action command requesting reporting of logged operation events. It does not take parameters and must be the last command in the command line.
  • Page 107 AT Commands • Data Transfer Bit-error rates, for each direction Page 107...
  • Page 108 AT Commands Rate renegotiation Retraining • Call Termination protocol disconnect signals carrier disconnect signals loss of carrier excessive error rates Command Syntax In response to this command, the modem will report one or more lines of information text as defined below. Information text format conforms to V.250; each line is preceded by a <CR><LF>...
  • Page 109 AT Commands Monitoring an Active Connection This command is intended for use after call termination. However, codes are defined so that a modem can respond before the first call is placed, and during a call for live monitoring purposes. For example, key 60, call termination, has value 1 defined, indicating that the call is still in progress.
  • Page 110 AT Commands Table A-4. AT#UD Last Call Status Report Format Value(s) Definition 2 digits Diagnostic Command Specification revision number, digit.digit Table 3-5 Call Setup Result code Table 3-6 Multi-media mode Table 3-7 DTE-DCE interface mode String V.8 CM octet string, same format as V.250, in quotes String V.8 JM octet string, same format as V.250, in quotes 0-2F...
  • Page 111 AT Commands Table A-5. Call Setup Result Codes Code 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)
  • Page 112 AT Commands Table A-9. gstnModulationSchemeActive from 3.7.2/V.58 Value 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 K56fle Bell 212A Bell 103 Table A-10.
  • Page 113 AT Commands Table A-12. callCleared codes from 3.6.4/V.58-1994 Valu Description Notes CauseUnidentified Call setup issues No Previous call Not in V.58 Call is still in progress Not in V.58 Call Waiting signal detected Not in V.58, only if modem can detect it Delayed Same as value 2A, CallAttemptsLimitExceeded...
  • Page 114 AT Commands Example Modem Response and Usage Example #UD commend response are shown in Table A-13. Table A-13. Completed Data Call, with some errors and rate retrain during the call Modem Response line Description DIAG <2A4D3263 0=09> This is version 0.9 DIAG <2A4D3263 1=06 2=0 3=0>...

  • Page 115: Compatibility Commands

    AT Commands 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.

  • Page 116: E - Compromise Equalizer Enable Command

    AT Commands :E - Compromise Equalizer Enable Command This command is included for compatibility only and has no effect other than returning a result code. Syntax :E<value> Defined Value <value> Decimal number corresponding to the selected option. :E0 command. :E1 command. @M30 command.

  • Page 117: P And -Q Commands

    AT Commands 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=<value>...

  • Page 118: Pmht - Modem-On-Hold Timer

    AT Commands +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. +PMHT=<value> Syntax Defined Value <value> Decimal number corresponding to selected setting. Deny V.92 modem-on-hold Request (Default.) Grant MOH with 10 second timeout Grant MOH with 20 second timeout...

  • Page 119: Pig - Pcm Upstream Ignore

    AT Commands MOH with 10 second timeout Granted. MOH with 20 second timeout Granted. MOH with 30 second timeout Granted. MOH with 40 second timeout Granted. MOH with 1 minute timeout Granted. MOH with 2 minute timeout Granted. MOH with 3 minute timeout Granted. MOH with 4 minute timeout Granted.

  • Page 120: Pqc - V.92 Phase 1 And Phase 2 Control

    AT Commands +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=<value>...

  • Page 121: Qcpc - Force Full Startup Procedure Next Connection

    AT Commands -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.

  • Page 122: S-Parameters

    AT Commands S-Parameters The S-Parameters are summarized in Table A-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.

  • Page 123: Factory Defaults

    AT Commands FACTORY DEFAULTS The factory default values are stored in ROM and are loaded into the active configuration at power up or by the ATZ command. In addition, the designated default profile is subsequently loaded, and may change some of the factory default values.
  • Page 124 AT Commands V.24/General Bit Mapped Options Status 52 (34h) Speaker/Results Bit Mapped Options Status 117 (75h) General Bit Mapped Options Status Sleep Inactivity Timer 0-255 Delay to DTR Off 0-255 s or 0.01 s RTS-to-CTS Delay 0-255 0.01 s General Bit Mapped Options Status 73 (49h) General Bit-Mapped...

  • Page 125: S-Parameter Definitions

    AT Commands 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: S1 - Ring Counter S1 is incremented each time the modem detects a ring signal on the telephone line.

  • Page 126: S5 - Backspace Character

    AT Commands 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.

  • Page 127: S8 - Pause Time For Dial Delay

    AT Commands Sets the length of time, in seconds, that the modem will wait for dial tone when encountering a “W” dial modifier before continuing with the next dial string parameter. (US models.) Range: 1-255 seconds Default: S8 - Pause Time For Dial Delay S8 sets the time, in seconds, that the modem must pause when the “,”...

  • Page 128: S11 - Dtmf Tone Duration

    AT Commands S11 - DTMF Tone Duration S11 operation is country dependent. 1. For US models, S11 sets the duration of tones in DTMF dialing (has no effect on pulse dialing). 2. For W-class models, S11 is a country parameter loaded by ConfigurACE. Range: 50-255 milliseconds Default:...

  • Page 129: S16 - Test Mode Bit Mapped Options Status

    AT Commands S16 - Test Mode Bit Mapped Options Status S16 indicates the test in progress status. Default: Bit 0 Local analog loopback Disabled (Default.) Enabled (&T1) Bits 1-7 Not used S19 – Reserved S19 is supported for backwards compatibility only. No value can be written. Responds with default value.

  • Page 130: S22 - Speaker/Results Bit Mapped Options Status

    AT Commands S22 - Speaker/Results Bit Mapped Options Status S22 indicates the status of command options. Default: 117 (75h) (01110101b) Bits 0-1 Speaker volume (Ln) Off (L0) Low (L1) (Default.) Medium (L2) High (L3) Bits 2-3 Speaker control (Mn) Disabled (M0) Off on carrier (M1) (Default.) Always on (M2) On during handshake (M3)

  • Page 131: S26 - Rts To Cts Delay

    AT Commands Default: 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. Pertains to synchronous operation only. Range: 0-255 hundredths of a second Default:...

  • Page 132: S29 - Flash Dial Modifier Time

    AT Commands S29 - Flash Dial Modifier Time S29 sets the length of time, in units of 10 ms, that the modem will go on-hook when it encounters the flash (!) dial modifier in the dial string. S29 is a country dependent parameter.

  • Page 133: S36 - Lapm Failure Control

    AT Commands S36 - LAPM Failure Control Default: 7 (00000111b) Bits 0-2 This value indicates what should happen upon a LAPM failure. These fallback options are initiated immediately upon connection if S48=128. If an invalid number is entered, the number is accepted into the register, but S36 will act as if the default value has been entered.

  • Page 134: S40 - General Bit Mapped Options Status

    AT Commands No flow control RTS/CTS (&K3) (Default.) XON/XOFF (&K4) Transparent XON (&K5) Both methods (&K6) Bits 3-7 Reserved S40 - General Bit Mapped Options Status S40 indicates the status of command options. Default: 104 (68h) (01101000b) Bits 0-1 MNP Extended Services (-Kn) Disable extended services (-K0) (Default.) Enable extended services (-K1) Enable extended services (-K2)

  • Page 135: S48 - V.42 Negotiation Control

    AT Commands S48 - V.42 Negotiation Control The V.42 negotiation process determines the capabilities of the remote modem. However, when the capabilities of the remote modem are known and negotiation is unnecessary, this process can be bypassed if so desired. Range: 0, 7, or 128 If an invalid number is entered, it is accepted into the S-Parameter, but S48 will act as if 128 has been entered.

  • Page 136: S86=26 Remote Hangup Detected

    AT Commands S86=26 Remote hangup detected. Page 136...

  • Page 137: S91 - Pstn Transmit Attenuation Level

    AT Commands 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.

  • Page 138: S210 - V.34 Symbol Rates

    AT Commands 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. 2 1 0 Symbol Rates (baud) 0 0 0...

  • Page 139: Cellular Phone Drivers

    AT Commands purchased separately. A different cable is required for each cellular phone or make of cellular phones. Cellular Phone Drivers The data interface to cellular phones differs between manufacturers and models and requires a unique cellular phone driver for each phone or group of phones. Therefore the particular phone driver needs to be downloaded from the PC into the modem's RAM before the modem can be used directly with the cellular phone.

  • Page 140: T6 - Indicate Status Of Cellular Phone

    AT Commands ^T6 - Indicate Status of Cellular Phone The status of the cellular phone connected to the modem is reported in response to the ^T6 command. The status is reported in a single byte formatted as a decimal number. The individual status signals assigned to the status byte bits are: bit 0 Cellular phone is receiving an incoming call bit 1...
  • Page 141 AT Commands Modem Configuration Modem performance will be improved by modification of your standard configuration; it is recommended that the landline modem also be EC compatible for reliable communications. Cell Site AT&F Base Site AT&F -SEC=1,18 MNP10-EC is automatically enabled on the cell side when a cellular phone driver is loaded and the modem firmware detects that the cellular phone is attached, also in the V.34 mode the modem is automatically configured to force the connection in V.32bis mode.
  • Page 142 AT Commands Table 3-15 summarizes the mode and resulting transmit levels for both modems depending on their configuration. Fax Configuration It is recommended that fax transmissions be configured to operate at 9600 bps in V.17 mode or 7200 bps in V.29 mode. Cellular Phone Configuration To achieve the best operational performance, a cellular data connection should be attempted in a location where adequate signal strength is observed for the cellular...
  • Page 143 AT Commands Table A-15. Remote Modem Configuration and Resulting Transmit Levels Remote Modem Base Site Configuration Configuration (Connected to PSTN) AT&F-SEC=0,x AT&F-SEC=1,x V.34 V.32bis V.34 V.32bis Mod = V.32bis Mod = V.32bis Mod = V.32bis Mod = V.32bis V.34 Mode = Single – Mode = -EC Mode = -EC Mode = -EC...

  • Page 144: Result Codes

    AT Commands 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 A-16. Two forms of each result code are available: long-form, an English-like "verbose"...
  • Page 145 AT Commands Code Message Meaning The modem has connected to the line and either the line speed is 2400 bps and CONNECT 2400 DCE speed reporting is enabled, or the DTE speed is 2400 bps and DTE speed reporting is enabled. The modem has connected to the line and either the line speed is 4800 bps and CONNECT 4800 DCE speed reporting is enabled, or the DTE speed is 4800 bps and DTE...
  • Page 146 AT Commands Code Message Meaning speed reporting is enabled. CONNECT 21600 The modem has connected to the line, the DTE speed is 21600 bps and DTE speed reporting is enabled. CONNECT 24000 The modem has connected to the line, the DTE speed is 24000 bps and DTE speed reporting is enabled.
  • Page 147 AT Commands Code Message Meaning +MRR: 42000 The modem has connected to the line at 42000 bps and carrier reporting is enabled. (See S95 and Xn.) +MRR: 44000 The modem has connected to the line at 44000 bps and carrier reporting is enabled.
  • Page 148 AT Commands Code Message Meaning CONNECT 49333 The modem has connected to the line at 49333 bps and DCE SPEED reporting is enabled. CONNECT 50667 The modem has connected to the line at 50667 bps and DCE SPEED reporting is enabled. CONNECT 53333 The modem has connected to the line at 53333 bps and DCE SPEED reporting is enabled.

  • Page 149: Fax Class 1 And Fax Class 1.0 Commands

    AT Commands Fax Class 1 and Fax Class 1.0 Commands 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.

  • Page 150: Fax Origination

    AT Commands Table A-17. Fax Class 1 and Fax Class 1.0 Commands Applicable Applicable Command/Paramete in Fax in Fax Function Class 1 Class 1.0 +FCLASS=<class> Select, read or test service class +FAA=<value> Auto answer enable +FAE=<value> Auto answer enable +FTS=<time> Stop transmission and pause +FRS=<time>...

  • Page 151: Fax Answering

    AT Commands Fax Answering Answering of fax calls is identical to answering of data calls with the exception that the modem enters the fax handshaking mode instead of the data handshaking mode after going off-hook. If +FAE=0, the modem, after sending answer tone, automatically enters fax mode (+FTH=3), sends the CONNECT message to the DTE, and starts sending FSK flags.
  • Page 152 AT Commands the command mode. If the specified carrier is detected, the modem generates the CONNECT message and enters the HDLC receive mode. In HDLC receive mode, the modem receives HDLC frames from the remote fax machine, strips the flags, performs zero-bit deletion, performs error checking, and handles <DLE><chr>...

  • Page 153: Fax Data Transmission

    AT Commands there is room in the receive buffer. If a starting flag is detected and there is no room in the buffer, the modem discards all data in that frame. If the modem receives any character from the DTE after the +FRH command (except flow control characters if software flow control is in effect), or if the modem detects a high-to-low transition of the DTR signal while &D1 is in effect, it sends <DLE><ETX>...

  • Page 154: Commands And Parameters

    AT Commands specified by register S7 expires, the modem generates the NO CARRIER message and returns to command mode. If a V.21 carrier is detected when a high speed carrier is expected, the modem generates the +FCERROR message and returns to the command mode.

  • Page 155: Mode Commands

    AT Commands Mode Commands +FAA - Auto Answer Enable This command enables or disables fax adaptive answer. This command operates identically to the +FAE command. +FAA=<value> Syntax Defined Value <value> Decimal number corresponding to the selected option. Disable data /fax auto answer mode. (Default.) Enable data /fax auto answer mode.

  • Page 156: Frs - Receive Silence

    AT Commands Response: +FTS: <time> range Example: +FTS: 0-255 +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.
  • Page 157 AT Commands Table A-18. Fax Class 1 and Fax Class 1.0 Modulation Modes and Rates <mod> Modulation Training Modulation Mode and Rate V.21 300 bps V.27 ter 2400 bps V.27 ter 4800 bps V.29 7200 bps V.17 long 7200 bps long V.17 short 7200 bps short...

  • Page 158: Frm - Receive Facsimile

    AT Commands +FRM - Receive Facsimile This command causes the modem to enter the receiver mode using the modulation defined below. Syntax +FRM=<mod> Defined Value <mod> Decimal number corresponding to the selected modulation mode and data rates shown in Table A-18. Reporting Current or Selected Values Command: +FRM?

  • Page 159: Frh - Receive Data With Hdlc Framing

    AT Commands Command: +FTH? Response: +FTH? Example: +FTH: 98 For V.17 9600 bps. +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.

  • Page 160: Service Class 1 Parameters

    AT Commands 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= mo FRH= mo commands.

  • Page 161: Fdd - Double Escape Character Replacement

    AT Commands 1 Enable Adaptive Reception. Reporting Current or Selected Values Command: +FCL? Response: +FCL: Example: +FCS: 0 For the default setting. Reporting Supported Range of Parameter Values Command: +FCL=? Response: +FCL: range) Example: +FCL: (0-255) +FDD - Double Escape Character Replacement This parameter conditions the use of the ˜DLE˜˜˜SUB˜...

  • Page 162: Fpr - Fixed Dte Rate

    AT Commands Reporting Current or Selected Values Command: FIT? Response: FIT: actio Example: FIT: 0,0 For the default settings. Reporting Supported Range of Parameter Values Command: FIT? Response: +FIT: (<time> range), (<action> range) Example: +FIT: (0-255),(0-1) Table A-19. Inactivity Timer Start and Stop Events On-line state Start timer event Stop timer event...

  • Page 163: Fmi? - Request Manufacturer Identification

    AT Commands Response: <rate code> Example 1: For automatic rate detection. Example 2: For 57600 bits/s. Reporting Supported Range of Parameter Values Command: +FPR=? Response: (<rate code> range) Example: (0,1,2,4,8,10,18) +FMI? - Request Manufacturer Identification This command causes the modem to report the modem product manufacturer. +FMI? Syntax Typical Response...

  • Page 164: Examples

    AT Commands Command: +FLO=? Response: +FLO: (<method>range) Example: +FLO: (0-2) Result Codes <method> = 0-2. ERROR Otherwise. Examples Examples of calling (transmitting) and answering (receiving) one page using fax class 1 commands are shown in Table A-20 and Table A-21, respectively. The examples show the interchange between the DTE and the modem for various cases.
  • Page 165 AT Commands AT+FRH=3 NO CARRIER detect loss-of-carrier drop carrier AT+FTM=96 CONNECT send V.29 carrier detect carrier <page image data> send page data receive page <DLE><ETX> drop carrier AT+FTS=8; wait 80 ms +FRH=3 send V.21 carrier detect carrier send flags detect flags <EOP frame data>...
  • Page 166 AT Commands send FCS <CFR frame data> drop carrier <DLE><ETX> final frame AT+FTM=96 CONNECT detect carrier receive send V.29 carrier <page image data> page send page data <DLE><ETX> detect loss-of-carrier drop carrier NO CARRIER wait 75 ms CONNECT detect carrier send V.21 carrier <EOP frame data>...

  • Page 167: Fax Class 2 Commands

    AT Commands Fax Class 2 Commands The Fax Class 2 commands are summarized in Table A-22. Table A-22. Fax Class 2 Commands Command Function Service Class ID +FCLASS= Service Class Class 2 Action Commands Originate a Call Answer a Call +FDT Data Transmission +FET=N...

  • Page 168: Command And Syntax Guidelines

    AT Commands Command and Syntax Guidelines Mode Entry Commands +FCLASS=2 - Select Facsimile Class 2 Mode +FCLASS=2 selects the Fax Class 2 Mode. 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.
  • Page 169 AT Commands 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 <CR> Basic data mode and fax service class mode select commands are: AT+FCLASS=0 <CR> for Data Mode AT+FCLASS=1 <CR>...

  • Page 170: Serial Port Speed And Flow Control

    AT Commands a. A Class 1 command is received while in Class 2. b. A Class 2 command is received while in Class 1. c. A Class 1 or Class 2 action command is received while in data modem mode. d.

  • Page 171: Auto Answer

    AT Commands DCE to DTE Streams The DTE must filter the data stream from the DCE, and remove all character pairs beginning with <DLE>. The DTE must recognize <DLE><ETX> as the stream terminator. The DTE must recognize <DLE><DLE> and reinsert a single <DLE> in its place.

  • Page 172: Procedure Interrupt Negotiation

    AT Commands Phase C prompts: XON, XOFF, DC2 Phase C base status reports: depending upon copy quality and related end-of page status: +FPTS: <1-5> Procedure Interrupt Negotiation CCITT allows a station to request a procedure interruption at the end of a page. This request is passed between stations by the PIP, PIN, and PRI-Q messages.

  • Page 173: Service Class 2 Action Commands

    AT Commands 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 <CR>. All action commands initiate processes. The modem will not accept other commands from the DTE until the modem issues a final result code (e.g., OK, CONNECT).

  • Page 174: Ata - Answer A Call

    AT Commands ATA - Answer a Call The DCE can support a DTE command to answer an incoming call using the ATA command. 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.

  • Page 175: Fdt - Data Transmission

    AT Commands +FDT - Data Transmission Syntax: +FDT <CR> The +FDT command prefixes Phase C data transmission. When the DCE is ready to accept Phase C data, it issues the negotiation responses and the CONNECT result code to the DTE. In Phase B, the +FDT command releases the DCE to proceed with negotiation, and releases the DCS message to the remote station.
  • Page 176 AT Commands until more data is received. The DCE appends an RTC pattern to the transmit data after an +FET= command is received from the DTE. Phase C Data Format The Phase C data will be of the format specified by the negotiated T.30 DCS frame.
  • Page 177 AT Commands 12000 bps/V.33 or V.17, V.33, V.29, V.17 V.27 ter 14400 bps/V.33 or V.17, V.33, V.29, V.17 V.27 ter Page Width 1728 pixels in 215 2048 pixels in 255 2432 pixels in 303 1216 pixels in 151 864 pixels in 107 mm Page Length A4, 297 mm B4, 364 mm...

  • Page 178: Fet - Transmit

    AT Commands +FET - Transmit Page Punctuation Syntax +FET=<ppm>[,<pc>,<bc>,<fc>] DCE response: +FPTS:<ppr - 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 <ppm>...

  • Page 179: Fdr - Begin Or Continue Phase C Receive Data

    AT Commands =8+ppm Post Page Message (ppm code) Table A-25. T.30 Post Page Response Messages ppr Code Mnemonic Description Page good Page bad; retrain requested Page good; retrain requested Page bad; interrupt requested Page good; interrupt requested +FDR - Begin or Continue Phase C Receive Data Syntax +FDR <CR>...
  • Page 180 AT Commands The DCE response in stream mode is: +FCFR when CFR sent [+FTSI:<remote ID string>] if new TSI received +FDCS:<T.30 subparameter string>] if new DCS CONNECT (<DC2> needed from DTE here) <Phase C data stream> <DLE><ETX> +FPTS:<ppr>, <lc> [,<blc>, <cblc>] +FET:<ppm>...

  • Page 181: Fk - Session Termination

    AT Commands <CAN> - Escape from Reception From the +FDR command until the end of Phase D Date, the DCE is in a data transfer state, and will not respond to DTE command characters. The DCE will respond to three ASCII control characters: <DC1> (017) and <DC3> (019) flow control characters, and cancel <CAN>...

  • Page 182: Fspl - Enable Polling

    AT Commands AT+FLPL? +FSPL - Enable Polling This command allows setting up an originating modem to be able to request to receive a document from a polled station. The syntax is: AT+FSPL=? AT+FSPL=1 AT+FSPL? Table A-26. Hang Up Status Codes Code Cause Description Call Placement and Termination...

  • Page 183: Service Class 2 Dce Responses

    AT Commands T.30 T1 timeout after EOM received 90-99 Receive Phase C Hangup Codes Unspecified Receive Phase C error Missing EOL after 5 seconds Unused code DCE to DTE buffer overflow Bad CRC or frame (ECM or BFT modes) 100-119 Receive Phase D Hangup Codes Unspecified Receive Phase D errors RSPREC invalid response received...

  • Page 184: Fcfr - Indicate Confirmation To Receive

    AT Commands +FDIS:<string> reports remote facsimile station capabilities and intentions. The parameters are provided in ASCII notation. (See Table A-23.) This message is generated in execution of Originate, Answer, +FDT, or +FD commands. +FCFR - Indicate Confirmation to Receive Syntax +FCFR The DCE sends a +FCFR response to the DTE upon reception of an acceptable TCF training burst and a valid DCS signal from the remote machine.

  • Page 185: Fet: - Post Page Message Response

    AT Commands parameter. The DCE will hold the corresponding Post Page Response message until released by a +FDR command from the DTE. +FET: - Post Page Message Response Syntax +FET:<ppm> The +FET:<post page message> response is generated by a receiving DCE after the end of Phase C reception on receipt of the post-page message from the transmitting station.

  • Page 186: Fdtc: - Report The Polled Station Capabilities

    AT Commands This response reports the received transmit station ID string, if any. This message is generated in execution of Originate, Answer, +FDT, or +FDR commands. +FDTC: - Report the Polled Station Capabilities Syntax +FDTC: “< string>” Polled Station Capabilities If the answerer has a document to poll, it would be communicated to the originator in bit 9 of the DIS frame.

  • Page 187: Fdcs - Current Session Results Parameters

    AT Commands Valid values: See Table A-23. 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.

  • Page 188: Flid= - Local Id String

    AT Commands BR = 5 14400 bit/s WD = 0 1728 pixels, LN = 2 unlimited length DF = 0 1-D modified Huffman coding, EC = 0 no ECM, BF = 0 no BFT, ST = 1 5 ms scan time. +FLID= - Local ID String Write syntax: +FLID="<local ID string>"...
  • Page 189 AT Commands post page response messages defined in T.30. The receiving DCE sets this parameter after it receives a page of Phase C data. The transmitting DCE sets this parameter with the status reported by the receiving station. The DTE may inspect or modify this parameter.

  • Page 190: Fcq - Copy Quality Checking

    AT Commands +FCQ - Copy Quality Checking Write syntax: +FCQ=<value> Valid values: Default value: 0 This parameter controls Copy Quality checking by a receiving facsimile DCE. The DCE returns +FCQ=0 which indicates the DCE does no quality checking. The DCE will generate Copy Quality OK (MCF) responses to complete pages, and set +FPTS=1.

  • Page 191: Faa - Answer Parameter

    AT Commands There are two data types to control: This command controls Phase C data (T.4 encoded data) transferred during execution of +FDT or +FDR commands. The following two codes are supported: +FBOR=0 or 2 Selects direct bit order for Phase C data. +FBOR=1 or 3 Selects reversed bit order for Phase C data.

  • Page 192: Example Sessions

    AT Commands <bc> = current buffer byte count Example: +FBUF? 512, 506, 500, 0 Example Sessions Tables A-27 and A-28 show the typical command and responses for sending and receiving two pages, respectively. Table A-27. Send Two Pages, 1-D, No Errors DTE Command DCE Response Local DTE Action...
  • Page 193 AT Commands Table A-28. Receive Two Pages, 1-D Data, No Errors DTE Command DCE Response Local DTE Action Remote Station Action AT+FCR=1 Enable reception AT+FLID="<local ID>" Set local ID RING Detect ring Dials {, send CNG} Off-hook Send CED Get CED Send CSI Get CSI Send DIS...

  • Page 194: Voice Commands

    Voice Commands Voice Commands Overview Voice commands are identified in Table A-29. Table A-29. Voice Commands Command Function Configuration +FCLASS Set Mode +VCID Caller ID (CID) +VNH Automatic Hang-up control +FMI? Manufacturer Identification +FMM? Product Identification +FMR? Version, Revision, etc. +FLO Flow Control Voice...

  • Page 195: Dle> Shielded Event Codes Sent To The Dte

    AT Commands <DLE> Shielded Event Codes Sent to the DTE Table A-30 lists the supported <DLE> shielded codes sent to the DTE in the expression <DLE><code>. The number in parenthesis in the second column corresponds to the T.50 equivalent. Table A-30. Supported <DLE> Shielded Codes Sent to the DTE Code T.50 Event Report Description...

  • Page 196: Dle> Shielded Codes Sent To The Modem (Dce)

    AT Commands (6/1) Facsimile or Data Answer (6/6) Data Answer <DLE> Shielded Codes Sent to the Modem (DCE) Table A-31 lists the supported <DLE> shielded codes sent to the modem in the expression <DLE><code>. The number in parenthesis in the second column corresponds to the T.50 equivalent.

  • Page 197: Voice Commands

    AT Commands The modem disables automatic hangups in the other non-Voice Modes. The modem performs only a “logical” hangup (returns to OK result code). Table A-32. +VNH Command Behavior Command Response Command No Carrier DTR & D2 Present +VNH=0 +VNH=1 +VNH=2 Notes: Y= will hang-up;...
  • Page 198 AT Commands ERROR If not in Voice Mode. Page 198...

  • Page 199: Vts - Send Voice Tone(S)

    AT Commands +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.
  • Page 200 AT Commands Reporting Supported Range of Parameter Values Command: +VTS=? Response: (<freq1> range), (<freq2> range), (<dur> range) Example: (200-3000),(200-3000),(0-255) Result Codes Valid command. ERROR The <string> command is invalid, or a selected frequency is out of range. Example 1. This example illustrates tone generation without using any null elements.

  • Page 201: Vtx - Start Modem Transmit (Playback)

    AT Commands Play DTMF 1 with a duration given by the +VTD command. Play silence with a duration of 500 ms. Play DTMF 2 with a duration given by the +VTD command. Play silence with a duration given by the +VTD command. Play DTMF 9 with a duration given by the +VTD command.

  • Page 202: Vgt - Voice Gain Transmit (Playback Volume)

    AT Commands +VGT - Voice Gain Transmit (Playback Volume) This command causes the modem to set the volume level. +VGT=<level> Syntax Defined Values <level> Decimal number corresponding to the volume level. Reporting Current or Selected Values Command: +VGT? Response: <level> Example: 128 For the default setting.
  • Page 203 AT Commands Command: +VLS=? Response: <label>,<devices>,<transmit event>,<receive event>,<idle event> Where each event subparameter is a hex number the represents an event bit field of the reporting capabilities of each state. (see Table A-34): <label> Identifies the modem analog source/destination hardware configuration <devices>...
  • Page 204 AT Commands Table A-34. +VLS Command Options Label Primitives Description +VTX +VRX +VSP=1 None DCE on-hook. Local phone connected to the line. DCE off-hook. DCE connected to the line. Local phone provided with power to detect hook condition. DCE on hook. Local phone connected to the DCE. DCE off hook.
  • Page 205 AT Commands Table A-35. Events Detectable in the Voice Mode per V.253 Event Event Description Event Number Reporting Caller Id Report Message DID Report Message Distinctive Ringing Pattern RING Simple DTMF Received Simple Receive Buffer Overrun Simple Facsimile Calling (e.g., 1100 Hz) Simple Data Calling (e.g., 1300 Hz) Simple...

  • Page 206: Vra - Ringback Goes Away Timer

    AT Commands +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=<interval> Defined Values <interval>...

  • Page 207: Vsd - Silence Detection (Quiet And Silence)

    AT Commands +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.

  • Page 208: Vsm - Compression Method Selection

    AT Commands +VSM - Compression Method Selection This command causes the modem to set the voice compression method, the silence compression sensitivity, and the voice sampling rate. Reporting Supported Range of Parameter Values +VSM=<cml>,<vsr>,<sds>,<sel> Syntax Defined Values <cml> Decimal number identifying the compression method. <vsr>...

  • Page 209: Vtd - Beep Tone Duration Timer

    AT Commands 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. +VTD=<dur> Syntax Defined Values <dur> Decimal number specifying the default DTMF/tone generation duration in units of 0.01 second.

  • Page 210: Vdt - Control Tone Cadence Reporting

    AT Commands Response: (<enable> range),(<report>range) Example: (0,1),(0-6) Result Codes <enable>,<report> = (0,1),(0-6) ERROR Otherwise, or if not in Voice Mode. +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).

  • Page 211: Speakerphone Commands

    AT Commands 0 = Autobaud 1 = 2400 bps 2 = 4800 bps 3 = 7200 bps 4 = 9600 bps 8 = 19200 bps 16 = 38400 bps 24 = 57600 bps 48 = 115200 bps 96 = 230400 bps Reporting Current or Selected Values Command: +VPR?

  • Page 212: Vgm - Microphone Gain

    AT Commands Reporting Current or Selected Values Command: +VDX? Response: <mode> Example: For the default setting. Reporting Supported Range of Parameter Values Command: +VDX=? Response: (<mode> range) Example: Result Codes <mode> = 1. ERROR Otherwise, or if not in Voice Mode. +VGM - Microphone Gain This command causes the modem to set the microphone gain of the speakerphone function.
  • Page 213 AT Commands Page 213...

  • Page 215: Limited Product Warranty

    Products which are returned F.O.B., Synxcom' facility, Newport Beach, California (or, at Synxcom' option refunding the purchase price of such products). In no case are Products to be returned without first obtaining permission and a customer return order number from Synxcom.
  • Page 216 Synxcom. If you bought the product from a Distributor or Systems Integrator, the product should be returned to that vendor. The most convenient method to obtain an RMA number for a product purchased from Synxcom is to send support@Synxcom.com an email to .

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