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Lucent Technologies Inc.

3

Manual
August 2000

Venus AT Command Reference Manual

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.

A pause, the length of which is set by the escape guard time (register S12), must be used before and after an
escape sequence is issued. This pause prevents the modem from interpreting the escape sequence as data. The
value of the escape sequence character may be changed using register S2.

A/—Repeat Last Command

The A/ command instructs the modem to repeat the last AT command. It will repeat the command already in the
command buffer. This command does not require the AT prefix and does not have to be followed by the terminator
character. It is primarily used to redial the last number in the case of a busy signal.

A—Answer

This command instructs the modem to go off-hook and answer an incoming call.

Bn—Communication Standard Setting

This command determines the communication standard used by the modem.

Result codes:

■

OK if n = 0—3, 15, 16.

■

ERROR if n

≠

0—3, 15, 16.

Table 2. Bn Commands

Cn—Carrier Control

The modem will accept the C1 command without error in order to ensure backward compatibility with communica-
tions software that issues the C1 command. However, this modem does not support the C0 command. The C0
command may instruct some other modems not to send carrier (i.e., it puts them in receive-only mode).

Result codes:

■

OK if n = 1.

■

ERROR if n

≠

1.

Command

Function

B0

Selects CCITT V.22 mode when the modem is at 1200 bits/s.

B1

Selects Bell 212A when the modem is at 1200 bits/s (default).

B2

Deselects V.23 reverse channel (same as B3).

B3

Deselects V.23 reverse channel (same as B2).

B15

Selects V.21 when the modem is at 300 bits/s.

B16

Selects Bell 103J when the modem is at 300 bits/s (default).

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Summary of Contents for 4703US

Page 1: ...des 34 S Registers 36 FAX Commands 48 V 25ter Commands 54 V 80 AT Commands 65 AT Voice Commands 67 Introduction This document specifies the AT command set for the Lucent Technologies Venus chip set Note that if a particular modem board does not support a feature such as voice then the corresponding commands are disabled for that mode ...

Page 2: ...Wn Store current configuration En Echo command Yn Select stored profile for hard reset Fn On line data character echo command Zn Store telephone number Hn Hook control An Select MNP block size In Request ID information Bn Send break Ln Speaker volume Gn Modem port flow control Mn Speaker control Jn Adjust bits s rate control Nn Modulation handshake Kn Set break control On Return to on line data mo...

Page 3: ...minator character It is primarily used to redial the last number in the case of a busy signal A Answer This command instructs the modem to go off hook and answer an incoming call Bn Communication Standard Setting This command determines the communication standard used by the modem Result codes OK if n 0 3 15 16 ERROR if n 0 3 15 16 Table 2 Bn Commands Cn Carrier Control The modem will accept the C...

Page 4: ...Dial the last number This modifier is valid only if it is the first symbol of the dial string All con secutive characters are discarded P Use pulse dialing T Use tone dialing default W Wait for dial tone The modem will wait for a second dial tone before processing the dial string V The modem switches to speakerphone mode and dials the number The Hn command may be used to disconnect the voice call ...

Page 5: ...OK if n 1 ERROR if n 1 Table 6 Fn Commands Hn Hook Control This command instructs the modem to go either on hook to disconnect a call or off hook to make the telephone line busy Result codes OK if n 0 1 ERROR if n 0 1 Table 7 Hn Commands In Request ID Information This command displays specific product information about the modem Result codes As described in Table 8 if n 0 9 11 ERROR if n 0 9 11 Co...

Page 6: ...ion Status Status 12 Near Echo Level dBm NA NA 13 Far Echo Level dBm NA NA 14 Transmit Frame Count 3 3 15 Transmit Frame Error Count 0 0 16 Receive Frame Count 0 0 17 Receive Frame Error Count 0 0 18 Retrain by Local Modem 0 0 19 Retrain by Remote Modem 0 0 20 Rate Renegotiation by Local Modem 0 0 21 Rate Renegotiation by Remote Modem 0 0 22 Call Termination Cause 0 0 23 Robbed Bit Signalling 00 0...

Page 7: ... Signal Power Level dBm Upstream transmit signal power Round Trip Delay ms Round trip delay in milliseconds Near Echo Level dBm Echo levels are valid for V 34 only Far Echo Level dBm Echo levels are valid for V 34 only Transmit Frame Count Number of LAPM frames sent upstream during this call Count wraps around at 65535 Transmit Frame Error Count Number of REJ frames received at the analog client m...

Page 8: ... the communication speed of the two modems is different Result codes OK if n 0 1 ERROR if n 0 1 Table 12 Nn Commands Command Function L0 Low volume L1 Low volume L2 Medium volume default L3 High volume Command Function M0 Speaker is off M1 Speaker is on until the modem detects the carrier signal default M2 Speaker is always on when the modem is off hook M3 Speaker is on until the carrier is detect...

Page 9: ... displayed on the monitor Basic result codes include OK CONNECT RING NO CARRIER and ERROR The Qn command allows the user to turn result codes on or off Result codes OK if n 0 1 ERROR if n 0 1 Table 14 Qn Commands T Select Tone Dialing This command instructs the modem to send DTMF tones while dialing Dialed digits are tone dialed until a P com mand or dial modifier is received This is the default s...

Page 10: ...rmats Wn Result Code Option This command controls the format of CONNECT messages Result codes OK if n 0 2 ERROR if n 0 2 Table 17 Wn Commands Command Function V0 Displays result codes as digits V1 Displays result codes as text default Command Result Code Format V0 numeric code CR V1 CR LF verbose code CR LF Command Function W0 CONNECT result code reports DTE receive speed Disables protocol result ...

Page 11: ...e dial tone is not detected within 10 seconds Disabled The modem ignores any busy tones it receives X3 Enabled Displays basic result codes connect mes sage data rate and an indi cation of error correction and data compression operation Disabled The modem dials a call regardless of whether it detects a dial tone The period of time the modem waits before dialing is specified in register S6 Enabled T...

Page 12: ...This command will force the modem to go on hook and restore the profile saved by the last W command Either Z0 or Z1 restores the same single profile Result codes OK if n 0 1 ERROR if n 0 1 Table 20 Zn Commands Bn V 32 Auto Retrain The modem always auto retrains Result codes OK if n 1 ERROR if n 1 Table 21 Bn Commands Command Function Y0 Disables long space disconnect default Y1 Enables long space ...

Page 13: ...voice mode the command line is ignored if the AT F command is placed on the same line as the other commands To load factory settings in voice mode issue the Fn command by itself Result codes OK if n 0 or 5 ERROR if n 0 or 5 Table 24 Fn Commands Command Function C0 The state of the carrier from the remote modem is ignored DCD remains on at all times C1 DCD turns on when the remote modem s carrier s...

Page 14: ...0 2 Table 25 Gn Commands Jn Auxiliary Relay Option Result codes OK if n 0 ERROR if n 0 Table 26 Jn Commands Kn Local Flow Control Selection This command instructs the modem on which flow control method to use Result codes OK if n 0 3 or 4 ERROR if n 0 3 or 4 Table 27 Kn Commands Command Function G0 Disables guard tone default G1 Selects 550 Hz guard tone G2 Selects 1800 Hz guard tone Command Funct...

Page 15: ...hronous mode default M1 M2 M3 M4 Reserved Command Function P0 Selects 39 61 make break ratio at 10 pulses per second P1 Selects 33 67 make break ratio at 10 pulses per second default P2 Selects 33 67 make break ratio at 20 pulses per second Command Function Q0 Asynchronous mode buffered Same as N0 Q5 Error control mode buffered default Same as N3 Q6 Asynchronous mode buffered Same as N0 Q8 MNP err...

Page 16: ...dic data loss or random errors Result codes OK if n 0 CONNECT if n 1 or 3 ERROR if n 0 1 or 3 Table 32 Tn Commands Command Function S0 DSR is always on default S1 DSR comes on after establishing a connection and goes off when the connection ends Command Function T0 Abort Terminates the test in progress T1 Local analog loop This test verifies modem operation as well as the connection between the mo...

Page 17: ...d X Busy Tone Detect Enabled X LSD Action Standard RS232 C DTR Action Standard RS232 D Press any key to continue ESC to quit Option Selection AT Cmd V22b Guard Tone Disabled G Flow Control Hardware K Error Control Mode V42 MNP Buffer N Data Compression Enabled C AutoAnswerRing 0 S0 AT Escape Char 43 S2 CarriageReturnChar 13 S3 Linefeed Char 10 S4 Backspace Char 8 S5 Blind Dial Pause 2 sec S6 NoAns...

Page 18: ...ssue the Y0 command Result codes OK if n 0 ERROR if n 0 Table 34 Yn Commands Zn x Store Telephone Number This command is used to store up to three dialing strings for later use The format for the command is Zn stored number where n represents the location 0 2 to which the number should be written The dial string may contain up to 40 characters The ATDS n command dials using the string stored in lo...

Page 19: ...f connected in FAX modem mode ERROR if n 1 9 Table 36 Bn Commands Gn Modem Port Flow Control Result codes OK if n 0 1 ERROR if n 0 1 Table 37 Gn Commands Jn Adjust Bits s Rate Control This command determines whether or not the negotiated connect speed of the modem forces the adjustment of the speed of the DTE to the modem s speed Result codes OK if n 0 1 ERROR if n 0 1 Command Function A0 64 chara...

Page 20: ... During Data Connection Finally the third case occurs when a break is received from a remote modem during a connection These com mands are shown in Table 41 Table 41 Kn Commands When Break Is Received During Connection Command Function J0 Buffer mode Error control is set or disabled with the Nn command default J1 Forces the maximum DCE rate to the DTE rate Command Function K0 K2 K4 Enter on line c...

Page 21: ...or control proce dures If this fails the modem disconnects This is also known as MNP reliable mode N3 V 42 MNP or buffered default The modem attempts to connect in V 42 error control mode If this fails it will attempt to connect in MNP mode If this also fails the modem connects in buffer mode and continues operation This is also known as V 42 MNP auto reliable mode same as Q5 N4 V 42 or disconnect...

Page 22: ...n 0 1 ERROR if n 0 1 Table 47 Xn Commands B View Numbers in Blacklist If blacklisting is in effect this command displays the number of the last failed call attempted in the past two hours The modem returns an ERROR result code if your country does not support blacklisting Command Function T0 Inactivity timer disabled default T1 T255 Specifies the length of time in minutes that the modem will wait ...

Page 23: ... Result codes OK if n 0 2 ERROR if n 0 2 Table 49 En Commands Cn Enable Direct Connect This command enables direct connect operation After a phone is enabled the modem will operate in cellular mode whenever the phone is detected Otherwise it will automatically switch to landline ETC is automatically set when operating in cellular mode Result codes OK if n 0 3 ERROR if n 0 3 Table 50 Cn Commands Co...

Page 24: ...ck This command provides a loopback for line to line R Write to Read from DSP RAM Location AT R loc val writes the value val to the DSP RAM location loc AT R loc reads from location loc S Speaker Codec Loopback This command provides a loopback from the microphone to the speaker T88 Write to NVRAM AT T88 loc val writes the value val to NVRAM location loc T89 Read from NVRAM AT T89 loc reads NVRAM f...

Page 25: ...espectively DIAG token key value key value key value where DIAG 5 characters hexadecimal 44 49 41 47 20 left angle bracket hexadecimal 3C equal sign hexadecimal 3D right angle bracket hexadecimal 3E token unique 32 bit hexadecimal string i e 2A4D3263 key one or two digit hexadecimal number See Table 52 value any string Unless otherwise noted all values are hexadecimal numbers Any numeric values fr...

Page 26: ...ee Table 54 Note 6 Receive carrier negotiation result X 22 4 digits 0 1F40 Transmit carrier symbol rate 0 8000 X 23 4 digits 0 1F40 Receive carrier symbol rate 0 8000 X 24 4 digits 0 FA0 Transmit carrier frequency 0 4000 25 4 digits 0 FA0 Receive carrier frequency 0 4000 26 4 digits 0 FA00 Initial transmit carrier data rate 0 64000 X 27 4 digits 0 FA00 Initial receive carrier data rate 0 64000 X 2...

Page 27: ...protocol running see note 9 X 57 8 digits 0 FFFFFFFF Receive frame count if error control protocol running see note 9 X 58 8 digits 0 FFFF Transmit frame error count if error control protocol run ning see note 9 X 59 8 digits 0 FFFF Receive frame error count if error control protocol running see note 9 X 5A 5F Reserved 60 See Table 57 and Table 58 Note 10 Termination cause X 61 2 digits 0 FF Call ...

Page 28: ...f Paradyne Corporation Value hexadecimal Description Implemented 0 V 17 1 V 21 2 V 22 3 V 22bis 4 V 23 constant carrier 1200 75 5 V 23 switched carrier half duplex 6 V 26bis 7 V 26ter 8 V 27ter 9 V 29 HD A V 32 X B V 32bis C V 34 X D V 34 HD E V pcm asymmetric F V pcm symmetric E 7F Reserved V 58 80 X2 81 K56flex X 82 V FC 83 V 32terbo 80 FF Reserved for mfgs Value Description Implemented 0 Disabl...

Page 29: ...eserved V 58 80 MNP Class 5 X 81 FF Reserved for mfgs Code Definition Implemented 1 No previous call X 2 Call is still in progress X 3 Call waiting signal detected 4 Delayed see ETS 300 001 X Value Description Notes Implemented 0 CauseUnidentified Call setup issues X 1 3 See Table 57 X A NMSinitiatedDialCall Network management system B NMSinitiatedLeasedLineRestoral Network management system C NMS...

Page 30: ...lTimerExpired X 2D IncomingCallDetected X 2E LoopCurrentInterrupted 2F NoDialTone X 30 VoiceDetected 31 ReorderTone 32 SitTone 33 EngagedTone 34 LongSpaceDisconnect 3C CarrierLost Signal converter X 3D TrainingFailed X 3E NoModulationinCommon 3F RetrainFailed X 40 RetrainAttemptCountExceeded 41 GstnCleardownReceived 42 FaxDetected 46 InTestMode Test 47 IntrusiveSelfTestInitiated 50 AnyKeyAbort Cal...

Page 31: ...Code Description OK 0 Acknowledges the execution of a command line CONNECT 1 Modem connected to line RING 2 Incoming ring signal has been detected NO CARRIER 3 Modem lost carrier signal does not detect carrier signal or does not detect answer tone ERROR 4 Invalid command CONNECT 1200 EC 5 Connection at 1200 bits s NO DIALTONE 6 No dial tone detected BUSY 7 Busy signal detected NO ANSWER 8 Remote e...

Page 32: ... 76 Connection at 44000 bits s K56flex mode or V 90 CONNECT 46000 EC 77 Connection at 46000 bits s K56flex mode CONNECT 48000 EC 78 Connection at 48000 bits s K56flex mode or V 90 CONNECT 50000 EC 79 Connection at 50000 bits s K56flex mode CONNECT 52000 EC 80 Connection at 52000 bits s K56flex mode or V 90 CONNECT 54000 EC 81 Connection at 54000 bits s K56flex mode CONNECT 56000 EC 82 Connection a...

Page 33: ...ection completion time out 1 255 s 50 S8 Pause time for comma modifier 0 65 s 2 S10 Automatic disconnect delay 1 255 100 ms 20 S11 DTMF tone duration 50 150 ms 95 S12 Escape guard time 0 255 20 ms 50 S14 General bit mapped options status 8 S21 V 24 general bit mapped options status 48 S22 Results bit mapped options status 112 S24 Timer to sleep control mode 0 5 65 s 60 S28 V 34 modulation enable d...

Page 34: ...nted each time the modem detects a ring signal on the telephone line S1 is cleared if no rings occur over a six second interval This register is read only Range 0 255 Default 0 Units rings S2 Escape Character User Defined S2 holds the decimal value of the ASCII character used as the escape character The default value corresponds to an ASCII The escape sequence allows the modem to exit data mode an...

Page 35: ... the W command Range 0 32 Default 8 backspace Units ASCII S6 Wait Time Before Dialing This register sets the length of time in seconds that the modem must pause after going off hook before dialing the first digit of the telephone number The modem always pauses for a minimum of two seconds even if the value of S6 is less than two seconds The wait for dial tone progress feature W dial modifier in th...

Page 36: ...connecting is the value in register S10 Note This register default value may vary based on country selection Range 1 255 Default 20 Units 0 1 s S11 DTMF Dialing Speed This register determines the dialing speed which is prefixed for each country Note This register default value may vary based on country selection Range 50 150 Default 95 Units milliseconds S12 Escape Guard Time This register sets th...

Page 37: ...ine command state before the modem places itself into standby mode A value of zero prevents standby mode S24 is an alias for S89 Note If a number between 1 and 4 is entered for this register it will set the value to 5 and the inactivity before standby will be 5 s This is done for compatibility with previous products which allowed time outs down to 1 s Range 0 5 65 Default 60 Units seconds S28 V 34...

Page 38: ...nd cadence as specified in V 25 which allows remote data FAX voice discrimination The frequency is 1300 Hz with a cadence of 0 5 s on and 2 0 s off The setting of the homologation parameter 1f calling tone flag determines if S35 is enabled If the calling tone flag is set to 1 this register is valid Otherwise this register has no effect Note This register s default value may vary based on country s...

Page 39: ... 0 Auto rate default 10 12000 bits s 1 Reserved 11 14400 bits s 2 1200 75 bits s V 23 12 16800 bits s 3 300 bits s 13 19200 bits s 4 Reserved 14 21600 bits s 5 1200 bits s 15 24000 bits s 6 2400 bits s 16 26400 bits s 7 4800 bits s 17 28800 bits s 8 7200 bits s 18 31200 bits s 9 9600 bits s 19 33600 bits s Value INF File s HKR Value V 90 Downstream Rate K56Flex Downstream Rate 0 V 90 disabled K56F...

Page 40: ...or testing and debugging only V 32bis and V 22bis auto rates are disabled Retrain operation is disabled or enabled in data mode and fallback is disabled in data mode In K56 flex mode S42 0 forces connection at the rate specified by S38 even if the rate cannot be sustained without fallback to V 34 Range 0 1 Default 1 Table 68 Register S42 Value INF File s HKR Value V 90 Downstream Rate K56flex Down...

Page 41: ...s sent from the DTE or no RING in the off line command state before the modem places itself into standby mode A value of zero disables standby mode If a number between 1 and 4 is entered for this register the value will be set to 5 and inactivity before standby will be 5 seconds This is done for compatibility with previous products which allowed time outs down to 1 s Range 0 5 65 Default 60 Unit s...

Page 42: ...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 S109 V PCM Connection Options This register controls the connection type Either V 90 K56flex or both may be enabled Note The downstream connection rate is determined by the S38 Range 0 2 Default 1 Table 72 Register S109 Value Description S109 0 K56flex connections...

Page 43: ...lectronic Industries Association Command Function FCLASS Service class indication FCLASS Service class capabilities FCLASS n Service class selection FTS n Transmission silence FRS n Receive silence FTM n Transmit FAX data with n carrier FRM n Receive FAX data with n carrier FTH n Transmit HDLC data with n carrier FRH n Receive HDLC data with n carrier FTM Transmit FAX modulation FRM Receive FAX mo...

Page 44: ...t for n 10 ms intervals before responding with the OK result code For example an n value of 5 results in a 50 ms interval The value of n has a range of 0 255 Result codes OK if n 0 255 ERROR if n 0 255 FRS n Receive Silence FRS n causes the modem to listen and wait for n 10 ms intervals of silence to be detected on the line For example an n value of 5 results in a 50 ms interval At the end of this...

Page 45: ...00 bits s FTM 24 V 27ter 2400 bits s FTM 48 V 27ter 4800 bits s FTM 72 V 29 7200 bits s FTM 96 V 29 9600 bits s FTM 73 V 17 7200 bits s FTM 74 V 17 short train 7200 bits s FTM 97 V 17 9600 bits s FTM 98 V 17 short train 9600 bits s FTM 121 V 17 12000 bits s FTM 122 V 17 short train 12000 bits s FTM 145 V 17 14400 bits s FTM 146 V 17 short train 14400 bits s Command Modulation Speed FRM 3 V 21 Chan...

Page 46: ...on Speed FTH 3 V 21 Channel 2 300 bits s FTH 24 V 27ter 2400 bits s FTH 48 V 27ter 4800 bits s FTH 72 V 29 7200 bits s FTH 96 V 29 9600 bits s FTH 73 V 17 7200 bits s FTH 74 V 17 short train 7200 bits s FTH 97 V 17 9600 bits s FTH 98 V 17 short train 9600 bits s FTH 121 V 17 12000 bits s FTH 122 V 17 short train 12000 bits s FTH 145 V 17 14400 bits s FTH 146 V 17 short train 14400 bits s Command M...

Page 47: ...s FPR 8 Execute IPR 19200 Set DTE DCE to 19200 bits s FPR 10 Execute IPR 38400 Set DTE DCE to 38400 bits s FPR 18 Execute IPR 57600 Set DTE DCE to 57600 bits s FPR if all values listed above are supported Report 0 1 2 4 8 10 18 DCE supports 2400 bits s 4800 bits s 9600 bits s 19200 bits s 38400 bits s and 57600 bits s FPR if IPF 0 Report 0 DTE DCE rate is automatically detected FPR if IFC 2400 Rep...

Page 48: ...Product Identification This command returns one of the following results depending on the product Data FAX Data FAX Voice FMR Version Revision Information This command returns the modem version code FLO Flow Control Selection Result codes OK if n 0 2 ERROR if n 0 2 Table 81 FLO Commands Command Function FLO 0 Disables flow control FLO 1 Enables software flow control FLO 2 Enables hardware flow con...

Page 49: ... results of the related commands in the current modem command set Commands GMI Manufacturer Identification This command returns the manufacturer of the modem which is Lucent Technologies Valid Parameter Syntax GMI GMI GMI GMM Modem Identification This command returns the model of the modem which is the same string returned by the ATI0 command Valid Parameter Syntax GMM GMM GMM GMR Version Revision...

Page 50: ...g combinations are accepted by the modem If an invalid combination is selected the next lower valid value will be used Valid Parameter Syntax IPR rate IPR IPR Table 83 IPR Combinations Response Description FCLASS Class 1 or Class 2 Facsimile DCE control MS Modulation Control MS MR commands ES Error Control ES EB ER EFCS ETBM com mands DS Data Compression DS DR commands Combination DTE Rate IPR 0 A...

Page 51: ...FC Combinations ILRR DTE DCE Local Rate Reporting This command will turn on off the local rate report If the rate report is enabled the rate reported is the current DTE DCE rate The intermediate result code is transmitted after any modulation error control or data compression reports and before the final result code e g CONNECT Valid Parameter Syntax ILRR value ILRR ILRR Table 85 ILRR x Commands M...

Page 52: ... given in Table 88 and the valid values for max_rx_rate are given in Table 90 Table 86 Valid Carrier Values Automatic modulation negotiation is enabled or disabled by automode However if values are specified for the max_rate and the max_rx_rate parameters automatic rate selection will be disabled and the modem will attempt to connect at the specified rates Table 87 Valid Range of automode Values T...

Page 53: ...S command MR Modulation Reporting Control This command will turn on off the modulation report Range 0 1 Valid Parameter Syntax MR value MR MR 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 V32 4800 bits s 14400 bits s in steps of 2400 bits s V22bis 2400 bits s V22 2200 bits s V23C Bell212A 1200 bits s V 21 Bell103 ...

Page 54: ...odem Valid Parameter Syntax ES orig_rqst orig_fbk ans_fbk ES ES Table 93 ES Combinations All of these ES commands are also used for V 80 If the modem is operated in V 80 mode synchronous buffered mode and ES 8 the ES will always return ES 6 8 The setting of this command overwrites the N command However the ES command is overwritten by the setting on a N command EB Break Handling In Error Control O...

Page 55: ...it Frame Check Sequence This command can be used to control the use of the 32 bit frame check sequence option in V 42 The only valid combination is EFCS 0 16 bit frame check sequence Valid Parameter Syntax EFCS value EFCS EFCS ER Error Control Reporting This command will turn on off the error control report Valid Parameter Syntax ER value ER ER Table 95 ER x Control Reporting Commands Value Meanin...

Page 56: ...upon call termination Only ETBM 0 0 0 is a valid combination This means that the modem will discard all the buffered data when the call is terminated Valid Parameter Syntax ETBM pending_TD pending_RD timer ETBM ETBM DS Data Compression This command will determine the data compression method used by the modem The following combinations are accepted by the modem Valid Parameter Syntax DS direction c...

Page 57: ...ode e g CON NECT The format is shown in Table 99 Table 99 DR x Data Compression Reporting Intermediate Result Codes ATSO Store Telephone Number This command stores up to three dialing strings for later use The format for the command is ATSO location dial_string location is a value of 0 to 2 which represents the three locations where the number may be written dial_string is the dialing string to be...

Page 58: ...A8E x when V 80 is disabled will be supported in future release Value Meaning 1 Enable DCE controlled V 8 origination negotiation default 6 Enable DCE controlled V 8 origination negotiation issue A8x indications Value Meaning 1 Enable DCE controlled V 8 answer negotiation default 5 Enable DCE controlled V 8 answer negotiation issue A8x indications Value Meaning 1 Enable DCE controlled V 8 originat...

Page 59: ...07 Valid msg_en Values Table 108 Valid supp_delay Values Value Meaning 0 None 1 Initiating Mre 2 Initiating MRd 3 Initiating CRe low power 4 Initiating CRe high power 5 Initiating CRd 6 Initiating Esi 7 Responding MRd low power 8 Responding MRd high power 9 Responding CRd 10 Responding Esr Value Meaning 0 Enable detection of initiation signals default 1 Enable detection or responding signals Value...

Page 60: ...d and the data state is entered ES Read syntax command to query the current values of the ES subparameters The DCE will transmit a string of information text to the DTE consisting of ES orig_rqst ans_fbk ES Test syntax command to obtain all defined values of the ES subparameters The DCE will transmit a string of information text to the DTE consisting of ES list of supported orig_rqst values list o...

Page 61: ...sh old in octets above which the DCE will gener ate a flow off signal Transmit flow control thresholds This command allows the DTE to determine the input buffer size in the DCE for data on circuit 103 from the DTE to control the thresholds used for flow control of such data on Determines the thresh old in octets below which the DCE will gener ate a flow on signal ITF Read syntax command to query t...

Page 62: ...inctive ring AT VGT Speaker volume control AT VIT DTE DCE inactivity timer AT VNH Automatic hang up control AT VLS Analog source destination selection and DTMF tone reporting AT VTD Set beep tone duration timer AT VSD Set silence detection timer AT VRA Set ringback goes away timer AT VRN Set ringback never came timer AT VTS DTMF tone generation AT VTR Start full duplex voice transmission and recep...

Page 63: ...ler ID This command enables disables caller ID Table 113 VCID Commands AT VDR enable report Distinctive Ringing and Cadence Report This command will enable the distinctive ringing feature This will allow a report of DROF DRON to follow an exact ring cadence coming over the phone line The default for each parameter is zero Table 114 VDR Commands Command Function AT FCLASS Returns the current DCE mo...

Page 64: ...ent report regardless of the DCE state or of the analog signal source or destination configuration mask is bits 0 33 i e FFFFFFFFC See the IS 101 specification for defined bit values Table 117 VEM Commands Command Function level 128 Nominal volume level for sending to speaker default level a value 128 Increase volume above nominal level level a value 128 Decrease volume below nominal level AT VGT ...

Page 65: ...the range of supported values 0 255 Command Function hook 0 The DCE retains automatic hang ups as in the other nonvoice modes hook 2 The DCE disables automatic hang ups in the other nonvoice modes The DTE only performs a logical hang up returns the OK result code AT VNH Returns the current value AT VNH Returns the supported values Command Function AT VLS 0 Speakerphone off AT VLS 5 Disables detach...

Page 66: ... Tone Reporting Requests for the modem s DTMF tone reporting capabilities are made using this command For each system con figuration in voice mode i e speakerphone and answering machine the modem reports the capabilities that are enabled for the configuration For each configuration the modem indicates tone reporting capabilities for each of the three different voice states voice transmit data voic...

Page 67: ...the AT VTX command There are two ways for the DCE to leave the voice transmit state 1 Modem receives DLE EXT in voice stream 2 DTE DCE inactivity timer expires AT VRX Enter Voice Receive Data State This command enables the modem to begin voice receive state with the voice stream received through the comm port Applications using the wave interface do not use the AT VRX command The modem returns the...

Page 68: ...his timer to the amount of time that the modem will spend looking for an initial ringback If ringback is not detected within this inter val the modem will assume that the remote station has gone off hook The default is 10 Table 127 VRN Commands AT VPR rate Select DTE DCE Interface Rate The AT VPR command returns an OK for any rate but has no action Command Function AT VSM Returns the numeric and s...

Page 69: ...SCII to the DTE as appropriate Table 129 DLE Shielded Codes Sent from DTE to DCE DLE Codes Sent to DCE VSP Speakerphone On Off This command turns the speakerphone function on off Range 0 1 Default 0 off Table 130 VSP Commands Code Character Description 0 9 A D DTMF tones a Answer tone b Busy tone c FAX calling tone d Dial tone e Data calling tone h Local phone on hook H Local phone off hook R Ring...

Page 70: ... 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 Range 0 255 Default 128 AT Voice Command Set Not Defined in IS 101 Specifications S32 Synthetic Ring Volume This register will provide a synthetic ring volume in dB with an implied minus sign The default is 10 A ran...

Page 71: ... codes that the modem will send to the application while in speakerphone mode are as follows Table 131 DLE Shielded Codes 3 When the user is in the middle of a speakerphone call call waiting hold operation can be initiated when the user hears the call waiting signal through the speaker Call waiting entails the following communication between the application and the modem Command Response Descripti...

Page 72: ... ringback or busy signal from the phone being called If the person at the other end picks up the phone the caller and the person at the other end converse If the speakerphone user decides to mute his speakerphone the application sends the following to mute the speaker phone Command Response Description AT VLS 5 Enter mute mode Microphone is disconnected from the line leaving the speaker only OK DC...

Page 73: ...ld wait for the OK before sending next command Command Response Description AT FCLASS 8 Put the modem into voice mode OK DCE responds The modem is now in voice mode AT VGT 128 Set the speaker volume to normal level OK DCE responds The volume level is set AT VLS 7 Start the speakerphone by attaching the internal speaker and microphone to the line DCE off hook OK DCE responds Speakerphone mode is ac...

Page 74: ...etached from system and modem returns to data mode FCLASS 0 Note When the local phone goes off hook in the middle of a speakerphone call the speakerphone disconnects and the DCE returns DLE H to the DTE When the speakerphone is on call waiting hold operation is initiated by the following Command Response Description ATD DTE sends hold command to DCE OK DCE responds Example 4 Receiving an Incoming ...

Page 75: ...answer data call using standard AT commands CONNECT DCE responds The call is answered and modem continues with procedures to establish connection Example 6 Switching from Speakerphone Mode to TAD Mode In this example the sequence begins at the point of the user in speakerphone mode and at some point in time wants to put the other end in hold The application may switch to TAD mode in hold state and...

Page 76: ...esponds DLE R DCE detects another ring and notifies DTE AT VLS 1 The modem answers the call OK DCE is off hook The TAD next plays its greeting message issues a beep and records the caller s message Command Response Description AT VTX DTE selects voice transmit mode CONNECT DCE responds Data DTE plays greeting through modem to remote caller DLE ETX DTE indicates end of voice transmit data OK DCE ac...

Page 77: ...oaded The modem is initially idle in data mode FCLASS 0 Command Response Description RING DCE reports ringing from remote station AT FCLASS 8 The modem enters voice mode OK DCE responds AT VGT 128 Set speaker volume to normal OK DCE responds AT VSD 128 0 DTE selects normal silence detection sensitivity and a silence detection interval of 0 seconds Disable silence detection OK DCE responds AT VSM 1...

Page 78: ...CE responds AT VLS 5 Speaker is attached to system and modem is off hook OK DCE is off hook The caller leaves a message and hangs up The modem detects silence for a specified period of time and then notifies the DTE Command Response Description DLE s DCE issues presumed end of message after silence detection interval has elapsed At the end of the message the application may issue the WAVE_IN_STOP ...

Page 79: ...Lucent Technologies Inc 79 Manual August 2000 Venus AT Command Reference Manual Notes ...

Page 80: ... 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 65 778 8833 FAX 65 777 7495 CHINA Microelectronics Group Lucent Technologies China Co Ltd A F2 23 F Zao Fong Universe Building 1800 Zhong Shan Xi Road Shanghai 200233 P R China Tel 86 21 6440 ...

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