Lucent Technologies H08-15328 Reference Manual
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Lucent Technologies H08-15328 Reference Manual

Lucent Technologies H08-15328 Reference Manual

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Manual
August 2000
®
Venus
AT Command Reference Manual

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Summary of Contents for Lucent Technologies H08-15328

  • Page 1 Manual August 2000 ® Venus AT Command Reference Manual...

  • Page 2: At Command Set

    Manual Venus AT Command Reference Manual August 2000 AT Command Set AT commands are issued to the modem to control the modem’s operation and software configuration. AT com- mands can only be entered while the modem is in command mode. The format for entering commands is ATXn where X is the AT command and n is the specific value for that command.
  • Page 3 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Escape Sequence The escape sequence allows the modem to exit data mode and enter on-line command mode. While in on-line command mode, you may communicate directly to the modem using AT commands. Use the On command to return to data mode.
  • Page 4 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Table 3. Cn Commands Command Function Transmit carrier always off (not supported). Normal transmit carrier switching (default). Dn—Dial This command instructs the modem to go off-hook and begin the dialing sequence. The dial string (n, including modifiers and the telephone number) is entered after the ATD command.
  • Page 5 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Fn—On-Line Data Character Echo Command This command determines if the modem will echo data from the DTE. The modem does not support the F0 version of the command. However, to ensure backward compatibility, the modem will accept F1, which may be issued by older communication software.
  • Page 6 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Table 8. In Commands Command Function I0, I3 Returns modem identity string and driver version number (default). Calculates a ROM checksum and displays it on the DTE. Performs a ROM check, calculates the checksum, and then verifies the checksum by display- ing OK or ERROR.
  • Page 7 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) The ATI11 command may be issued from on-line command mode or after the end of a call. After a call, some of the values are no longer valid. The following table describes each of the results listed for the ATI11 command. Table 9.
  • Page 8 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Ln—Speaker Volume This command instructs the modem to use the specified speaker volume setting when the speaker is on. Result codes: OK if n = 0—3. ERROR if n 0—3.
  • Page 9 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) On—Return to On-Line Data Mode Result codes: OK if n = 0—1, 3. ERROR if n 0—1, 3. Table 13. On Commands Command Function Instructs the modem to exit on-line command mode and return to data mode (default).* Issues a retrain before returning to on-line data mode.
  • Page 10 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Vn—DCE Response Format This command controls whether result codes, including call progress and negotiation progress messages, are dis- played as words or their numeric equivalents. Result codes: OK if n = 0—1. ERROR if n 0—1.
  • Page 11 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Xn—Select Result Code and Monitor Call Progress This command enables tone detection options used in the dialing process. As these functions are chosen, the modem’s result codes are also affected. Therefore, this command is frequently used to control the modem’s responses.
  • Page 12 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Yn—Long-Space Disconnect This command disconnects the modem from a call upon receiving a long-space signal from the distant end. This command is only valid in 1200 bits/s and 2400 bits/s modes. Result codes: OK if n = 0—1.
  • Page 13 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) &Cn—Data Carrier Detect (DCD) Control Data carrier detect (DCD) is a signal from the modem to the computer indicating that the carrier signal is being received from a remote modem. DCD normally turns off when the modem no longer detects the carrier signal. Result codes: OK if n = 0—1.
  • Page 14 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) &Gn—V.22bis Guard Tone Control This command determines which guard tone, if any, should be transmitted while transmitting in the high band (answer mode). This command is only used in V.22 and V.22bis mode. This option is not used in North America; it is for international use only.
  • Page 15 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) &Mn—Asynchronous Communications Mode Result codes: OK if n = 0. ERROR if n Table 28. &Mn Commands Command Function &M0 Asynchronous mode (default). &M1, &M2, &M3, &M4 Reserved. &Pn—Pulse Dial Make-to-Break Ratio Selection This command is effective only for Japan.
  • Page 16 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) &Sn—Data Set Ready (DSR) Option This command controls DSR action. Result codes: OK if n = 0—1. ERROR if n 0—1. Table 31. &Sn Commands Command Function &S0 DSR is always on (default).
  • Page 17 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) &Vn—View Active Configuration This command displays the active profiles. Result codes: OK if n = 0. ERROR if n An example of the results of the command are shown below: Option Selection AT Cmd...
  • Page 18 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) &Wn—Store Current Configuration This command stores certain command options and S-register values except S3, S4, and S5. The Zn command or a power-up reset of the modem restores this profiles. Note: This command is not valid during a cellular call.
  • Page 19 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Table 35. \An Commands Command Function 64 characters. 128 characters. 192 characters. 256 characters (default). \Bn—Send Break In nonerror correction mode, the modem will transmit a break signal to the remote modem with a length in multiples of 100 ms according to the parameter specified.
  • Page 20 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) Table 38. \Jn Commands Command Function Buffer mode. Error control is set or disabled with the \Nn command (default). Forces the maximum DCE rate to the DTE rate. \Kn—Set Break Control This command controls the response of the modem to a break received from the DTE, remote modem, or the \Bn command.
  • Page 21 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) \Nn—Select Error Control Mode This command determines the type of error control used by the modem when sending or receiving data. Result codes: OK if n = 0—5, or 7. ERROR if n 0—5, or 7.
  • Page 22 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) \Tn—Inactivity Timer This command specifies the length of time in minutes that the modem will wait before disconnecting when no data is sent or received. A setting of n = 0 disables the timer. Alternatively, this timer may be specified in register S30. This function is only applicable in buffer mode.
  • Page 23 Manual Venus AT Command Reference Manual August 2000 AT Command Set (continued) %Cn—Data Compression Control This command determines the operation of V.42bis and MNP class 5 data compression. On-line changes do not take effect until a disconnect occurs. Result codes: OK if n = 0—1.

  • Page 24: Test And Debug At Commands

    Manual Venus AT Command Reference Manual August 2000 Test and Debug AT Commands The following commands are to be used for testing and debugging only. They are not meant for general use. &&C—Write to/Read from DSP Register AT&&C<loc>,<val> writes the value <val> to the DSP register at location <loc>. AT&&C<loc> reads location <loc>. &&L—Line-to-Line Loopback This command provides a loopback for line-to-line.
  • Page 25 Manual Venus AT Command Reference Manual August 2000 Test and Debug AT Commands (continued) #UD—Unimodem Diagnostics This command is defined by Microsoft ’s* unimodem diagnostics command specification. The modem implements a subset of the parameters in that specification. #UD is an action command. It does not take parameters. It should be the last command in the command line. The modem logs aspects of its operation for each call and saves these results in volatile memory until cleared by one of the following events.
  • Page 26 Manual Venus AT Command Reference Manual August 2000 Test and Debug AT Commands (continued) Table 52. #UD Last Call Status Report Format (continued) Value(s) Required Definition Implemented String V.8 JM octet string. Same format as V.25ter Annex A in — quotes.
  • Page 27 Manual Venus AT Command Reference Manual August 2000 Test and Debug AT Commands (continued) Table 52 #UD Last Call Status Report Format (continued) Note: Refer to Table 1 in the Microsoft specification. Value(s) Required Definition Implemented 1 digit 0—2 Receive flow control. —...
  • Page 28 Manual Venus AT Command Reference Manual August 2000 Test and Debug AT Commands (continued) Table 54. gstnModulationSchemeActive from 3.7.2/V.58 Note: Refer to Table 6 in the Microsoft specification. Value Description Implemented (hexadecimal) V.17. — V.21. — V.22. — V.22bis. — V.23 constant carrier (1200/75).
  • Page 29 Manual Venus AT Command Reference Manual August 2000 Test and Debug AT Commands (continued) Table 56. compressionActive from 3.2.2/V.58 Note: Refer to Table 8 in the Microsoft specification. Value Description Implemented None. V.42bis. 2—7F Reserved (V.58). — MNP Class 5. 81—FF Reserved for mfgs.
  • Page 30 Manual Venus AT Command Reference Manual August 2000 Test and Debug AT Commands (continued) Table 58. callCleared Codes from 3.6.4/V.58-1994 (continued) Note: callCleared indicates that the DCE has gone on-hook and that the previously existing network connection has been cleared. These values are hexadecimal, converted from decimal in V.58. Refer to Table 10 in the Microsoft specification.

  • Page 31: Result Codes

    Manual Venus AT Command Reference Manual August 2000 Result Codes The modem’s AT command handler responds to commands from the caller and to activity on the line via result codes. Table 59 presents a summary of these result codes. Two forms of each result code are available. The long-form, or verbose, response is given when V1 is selected, and the short-form, data-like numeric response is given when V0 is selected.
  • Page 32 Manual Venus AT Command Reference Manual August 2000 Result Codes (continued) Table 59. Result Code Summary (continued) Result Code Numeric Description Code DELAYED Delay is in effect for the dialed number. BLACKLISTED Dialed number is blacklisted. BLACKLIST FULL Blacklist is full. CONNECT 32000 EC* Connection at 32000 bits/s (K56flex mode or V.90).

  • Page 33: Table Of Contents

    Manual Venus AT Command Reference Manual August 2000 S-Registers The following table provides a summary of the S-registers. The current setting of each S-register may be displayed by the ATS<n>? command, where <n> is the S-register whose setting is to be displayed. Table 60.

  • Page 34: S0 Auto-Answer Ring Number

    Manual Venus AT Command Reference Manual August 2000 S-Registers (continued) S-Register Definitions Note: The current setting of each S-register may be displayed by the ATS<n>? command, where <n> is the S-reg- ister whose setting is to be displayed. S0—Auto-Answer Ring Number This register determines the number of rings the modem will count before automatically answering a call.

  • Page 35: S4 Response Formatting Character

    Manual Venus AT Command Reference Manual August 2000 S-Registers (continued) S4—Response Formatting Character (User-Defined) This register determines the ASCII value used as the line feed character. The modem uses a line feed character in command mode when it responds to the computer. Note: This register value is not stored with the &W command.

  • Page 36: S10 Automatic Disconnect Delay

    Manual Venus AT Command Reference Manual August 2000 S-Registers (continued) S8—Pause Time for Comma Dial Modifier S8 sets the time, in seconds, that the modem will pause when the comma (,) dial modifier is encountered in the dial string. Note: This register default value may vary based on country selection. Range: 0—65 Default: 2 Units: seconds...

  • Page 37: S21 V.24/General Bit-Mapped Options Status

    Manual Venus AT Command Reference Manual August 2000 S-Registers (continued) S21—V.24/General Bit-Mapped Options Status S21 indicates the status of command options. Only bits 3, 4, and 5 are used; they are read only. Default: 48 (00110000b) Table 62. Register S21 Bits Description Value 3—4...

  • Page 38: S30 Inactivity Timer

    Manual Venus AT Command Reference Manual August 2000 S-Registers (continued) S30—Inactivity Timer This register specifies the length of time in minutes that the modem will wait before disconnecting when no data is sent or received. This function is only applicable to buffer mode. Note: This register’s default value may vary based on country selection.

  • Page 39: S37 Dial Line Rate

    Manual Venus AT Command Reference Manual August 2000 S-Registers (continued) S37—Dial Line Rate This register sets the maximum line data rate. In K56flex and V.90 mode, S37 controls the upstream V.34 rate. Default: 0 Table 65. Register S37 Values Value Rate Value Rate...

  • Page 40: S42 Auto Rate

    Manual Venus AT Command Reference Manual August 2000 S-Registers (continued) Table 66 Register S38 Values (continued) Value INF File’s HKR Value V.90 Downstream Rate K56flex Downstream Rate — 48 kbits/s — B5,C0,00,00 49.333 kbits/s — EA,C5,00,00 50.666 kbits/s — — 52 kbits/s —...

  • Page 41: S43 Auto Mode

    Manual Venus AT Command Reference Manual August 2000 S-Registers (continued) S43—Auto Mode This command is used for testing and debugging only. V.32bis start-up auto mode operation is disabled. Range: 0—1 Default: 1 Table 69. Register S43 Value Function S43 = 0 Auto mode disabled.

  • Page 42: S90 Read-Only Local Phone

    Manual Venus AT Command Reference Manual August 2000 S-Registers (continued) S90—Read-Only Local Phone This register tells the status of the local phone. It is read-only. 0 = on-hook. 1 = off-hook. S91—Line Transmit Level Register S91 is effective only for Japan. It specifies the line transmit level in dBm with an implied minus sign. Range: 6—25 (corresponding to –6 dBm to –25 dBm transmit level) Default: 10 (–10 dBm transmit level) Units: –dBm...
  • Page 43 Manual Venus AT Command Reference Manual August 2000 FAX Commands The modem supports FAX commands conforming to EIA* standard 578. These commands are given here with short descriptions; complete explanations are given in the standard, available from the Electronic Industries Asso- ciation.
  • Page 44 Manual Venus AT Command Reference Manual August 2000 FAX Commands (continued) +FCLASS=?—Service Class Capabilities This command causes the modem to display supported classes. Typical responses include 0, 1, 2, 2.0, and 8. +FCLASS=n—Service Class Selection This command sets the modem for class n operation. Result codes: OK if n = 0, 1, 2, 2.0, or 8 ERROR if n...
  • Page 45 Manual Venus AT Command Reference Manual August 2000 FAX Commands (continued) +FTM—Transmit FAX Data with n Carrier +FTM=n causes the modem to transmit data using the modulation defined below. +FTM=? causes the modem to display the supported values as defined in Table 75. Table 75.
  • Page 46 Manual Venus AT Command Reference Manual August 2000 FAX Commands (continued) +FTH—Transmit HDLC Data with n Carrier +FTH=n causes the modem to transmit data framed in the HDLC protocol at the modulation defined below. +FTH causes the modem to display the supported values as defined in Table 77. Table 77.
  • Page 47 Manual Venus AT Command Reference Manual August 2000 FAX Commands (continued) +FPR=n—Select FAX Port Rate This command sets the DTE to DCE FAX port rate. Table 79. +FPR=n Commands DTE Command DCE Action Description +FPR=0 Execute +IPR=0. Select automatic rate detection. +FPR=1 Execute +IPR=2400.
  • Page 48 Manual Venus AT Command Reference Manual August 2000 FAX Commands (continued) +FMI?—Manufacturer Identification This command returns one of the following results, depending on the product. Lucent Data/FAX Lucent Data/FAX/Voice +FMM?—Product Identification This command returns one of the following results, depending on the product. Data/FAX Data/FAX/Voice +FMR?—Version/Revision Information...
  • Page 49 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands In order to comply with the PC 99 specification, the V.25ter commands listed below are implemented in Venus modem controller firmware. For details of these commands, please refer to the ITU-T V.25ter specification. No extra space is allowed in the commands;...
  • Page 50 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) Table 82. Valid +GCAP Responses Response Description +FCLASS Class 1 or Class 2 Facsimile DCE control. Modulation Control: +MS, +MR commands. Error Control: +ES,+EB,+ER,+EFCS,+ETBM com- mands. Data Compression: +DS, +DR commands. +GCI—Country of Installation This command indicates or selects the country code.
  • Page 51 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) +IFC—DTE-DCE Local Flow Control This command will determine the local flow control method. The following combinations are accepted by the modem. The setting of the +IFC command can overwrite the settings of the \Q and \Xn commands. The reverse is also true. By modifying the settings of the \Q and \Xn commands, the +IFC command can be overwritten.
  • Page 52 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) This command can be used to set the modulation capabilities of the modem. The following combinations are accepted by the modem. Also, any optional field defined in the V.250 specification can be discarded or left blank, which means that this value is not going to be changed.
  • Page 53 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) Table 89. Valid <max_rate> Values for each <carrier> Value Meaning V90,K56,V34 2400 bits/s—33600 bits/s in steps of 2400 bits/s. V32bis 4800 bits/s—19200 bits/s in steps of 2400 bits/s. 4800 bits/s—14400 bits/s in steps of 2400 bits/s. V22bis 2400 bits/s.
  • Page 54 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) Table 92. +MR=x Commands Command Function +MR=0 This command turns off the modulation report. +MR=1 This command turns on the modulation report. If the modulation report is enabled, the +MRR:<rate>,<rx_rate> and the +MCR:<carrier> intermediate result codes are transmitted from the DCE to the DTE.
  • Page 55 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) Valid Parameter Syntax: +EB:<break_selection>,<0>,<default_length> +EB=? +EB? Table 94. Valid break_selection Values Value Meaning Ignore break (default). Nonexpedited, nondestructive. Expedited, nondestructive. Expedited and destructive. +ESR—Selective Repeat This command can be used to set the modem into select-reject mode. However, this mode is not supported by Venus , so the only valid combination is +ESR=0.
  • Page 56 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) If the compression report is enabled, the +ER:<type> intermediate result code reports the current DCE-DCE error control type. It is issued after the determination of the error control protocol to be used and before the final result code (e.g., CONNECT).
  • Page 57 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) +DR—Data Compression Reporting This command will turn on/off the compression report. Range: 0—1 Valid Parameter Syntax: +DR=<value> +DR? +DR=? Table 98. DR=x Data Compression Report Value Command Function +DR=0 This command turns off the compression report.
  • Page 58 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) +A8E-V.8 and V.8bis Operation Controls Valid Parameter Syntax: +A8E=<v80>,<v8a>,<v8cf>,<v8b> +A8E? +A8E=? The following values are supported when V.80 is enabled. Table 100. Valid <v8o> Values Value Meaning Enable DCE-controlled V.8 origination negotiation (default). Enable DCE-controlled V.8 origination negotiation, issue +A8x indications.
  • Page 59 Manual Venus AT Command Reference Manual August 2000 V.25ter Commands (continued) +A8T—Send V.8bis Signal and/or Message This command instructs the DCE to send a V.8bis signal or message. This command is only supported when V.80 is enabled. Valid Parameter Syntax: +A8T=<signal>,<1 message>,<2 message>,<sig_en>,<msg_en>,<supp_delay>...
  • Page 60 Manual Venus AT Command Reference Manual August 2000 V.80 AT Commands The chip set supports the synchronous access mode and most of the commands specified in V.80 standards. The commands are either AT commands issued in the command mode or in-band commands transmitted in the data stream.
  • Page 61 Manual Venus AT Command Reference Manual August 2000 V.80 AT Commands (continued) Table 109. V.80 AT Commands (continued) Command Subparameters Values Description +ESA? — — Read syntax command to query the current values of the +ESA subparameters. +ESA=? — — Test syntax command to obtain all supported values of the +ESA subparameters.
  • Page 62 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands The AT Voice Command set follows a modified IS-101 architecture. The commands are sent through the comm port, but the data path is sent either through the comm port or through a DMA channel using the wave driver. Table 110 and Table 111 show a summary of the AT Voice Command Set.
  • Page 63 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) AT+FCLASS=8—Enter Voice Mode The command AT+FCLASS=8 puts the modem in voice mode. Speakerphone and TAD modes are subsumed under the more general heading of voice mode and use a particular subset of voice mode commands to implement their respective features and functions.
  • Page 64 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) AT+VGT=<level>—Speaker Volume Control This command will enable the speaker volume control. <level> range: 0—255. Table 115. +VGT Commands Command Function <level> = 128 Nominal volume level for sending to speaker (default). <level>...
  • Page 65 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) AT+VIT=<Timer>—DTE/DCE Inactivity Timer This command sets the DCE’s value for the DTE/DCE inactivity timer. The units are in one seconds. Table 118. +VIT Commands Command Function AT+VIT? Returns the current value of the timer. AT+VIT=? Queries the DCE for the range of supported values (0—255).
  • Page 66 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) AT Commands for Telephone Answering Device AT+VTD=<dur>—Beep Tone Duration Timer This command sets the default duration for DTMF/tone generation in 0.01 s increments. For DTMF digits, beep tone duration is the interdigit time. For tone generation, this number is the actual tone duration. Table 121.
  • Page 67 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) AT+VSD=<sds, sdi>—Silence Detection (QUIET and SILENCE) This command sets both the silence detection sensitivity (<sds>) and silence detection interval (<sdi>). Larger val- ues of <sds> indicate that the modem is to treat noisier line conditions as silence (see Table 124). The valid range for each field is 0—255.
  • Page 68 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) AT+VSM=<cml>,<vsr>—Compression Method and Sampling Rate Specifications This command enables the compression method and sampling specifications where <cml> represents the com- pression method label and <vsr> represents the voice sampling rate. Table 125.
  • Page 69 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) Events Reported to the DTE The modem will return OK when going off-hook in voice mode (+FCLASS=8). After answering in voice mode, the modem may send any of the following <DLE> shielded event codes to the DTE, as appropriate. Table 128.
  • Page 70 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) +VGM=<gain>—Microphone Gain This command sets the microphone gain of the speakerphone function. <gain> is an unsigned octet where values greater than 128 indicate a gain larger than nominal, and values smaller than 128 indicate a gain smaller than nom- inal.
  • Page 71 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) Voice Modem Command Examples The application issues AT commands to request actions by the modem, and the modem responds with standard TIA-602 result codes to tell the application that the requested action has been completed. Notes for Speakerphone Examples 1.
  • Page 72 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) Example #1: Initiating a Speakerphone Call (with Phone Muting During Conversation) The speakerphone application is loaded. The modem is initially idle in data mode. The user then decides to pick up the phone to place a speakerphone call.
  • Page 73 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) Example #2: Initiating a Stored Number Speakerphone Call The speakerphone application is loaded. The modem is initially idle in data mode. The user then decides to place a speakerphone call either by entering the number without going off-hook first or by selecting a number previously stored in the application.
  • Page 74 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) Example #3: Answering a Speakerphone Call The speakerphone application is loaded. The modem is initially idle in data mode. In this mode, the modem is always screening for incoming calls. Command/Response Description DCE reports ringing from remote station.
  • Page 75 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) Example #5: Receiving an Incoming Data Call in Speakerphone or TAD Mode and Switching to Data Mode In this example, the sequence begins at the point of the user or telephone answering device (TAD) taking the speakerphone off-hook and detecting a data calling tone from the other end.
  • Page 76 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) Example #7: Call Screening and Recording a Message using TAD—IS101 <dle> Shielded Method The TAD application is loaded. The modem is initially idle in data mode (+FCLASS=0). Command/Response Description DCE reports ringing from remote station.
  • Page 77 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) The caller leaves a message and hangs up. The modem detects silence for a specified period of time, and then notifies the DTE that the message being recorded has ended. Command/Response Description DCE issues presumed end of message after silence detection interval has...
  • Page 78 Manual Venus AT Command Reference Manual August 2000 AT Voice Commands (continued) The application may receive voice samples using the wave driver. The application may issue WAVE_IN_OPEN and WAVE_IN_START messages to the wave driver. Command/Response Description DTE selects normal silence detection sensitivity and a silence detection interval of AT+VSD=128,50 5 seconds.
  • Page 79 Manual Venus AT Command Reference Manual August 2000 Notes Lucent Technologies Inc.
  • Page 80 For additional information, contact your Microelectronics Group Account Manager or the following: INTERNET: http://www.lucent.com/micro E-MAIL: docmaster@micro.lucent.com N. AMERICA: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel.

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