ZOOM TELEPHONICS, INC. ====================== COMSTAR 33600 SVD Card Type Modem (asynchronous) Chip Set Rockwell I/O Options Voice, speakerphone, SVD, speaker out, microphone in Maximum Data Rate 33.6Kbps Maximum Fax Rate 14.4Kbps Data Modulation Bell 103A/212A Protocol ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29, Protocol V.33 Fax Class Class I Error MNP5, MNP10EC, V.42, V.42bis Correction/Compression Data Bus 16-bit ISA +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Function | Label | Function | Label | |------------------------+-------+-------------------+-------| | Telephone line out | CN1 | Speaker out | CN3 | |------------------------+-------+-------------------+-------| | Telephone line in | CN2 | Microphone in | CN4 | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Setting | Label | Position | |----------------------------------------+-------+-----------| | i Speaker jack is monaural | J16 | Open | |----------------------------------------+-------+-----------| | Speaker jack is stereo | J16 | Closed | |----------------------------------------+-------+-----------| | i Microphone is electret | J25 | Closed | |----------------------------------------+-------+-----------| | Microphone is dynamic | J25 | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUDIO OUTPUT LEVEL CONFIGURATION | |------------------------------------------------------------| | Setting | J6 | J10 | |--------------------+-------------------+-------------------| | Lowest | Open | Closed | |--------------------+-------------------+-------------------| | Low | Open | Open | |--------------------+-------------------+-------------------| | Medium | Closed | Closed | |--------------------+-------------------+-------------------| | High | Closed | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | SUPPORTED STANDARD COMMANDS | |------------------------------------------------------------| | Basic AT Commands | |------------------------------------------------------------| | +++, 'comma', A/ | |------------------------------------------------------------| | A, B, E, H, L, M, N, O, P, Q, T, V, W, X, Y, Z | |------------------------------------------------------------| | &C, &D, &F, &G, &K, &Q, &S, &T, &V, &W, &Y, &Z | |------------------------------------------------------------| | Extended AT Commands | |------------------------------------------------------------| | \A, \B, \G, \N, \V | |------------------------------------------------------------| | %C, %E, %L, %Q | |------------------------------------------------------------| | Special AT Commands | |------------------------------------------------------------| | #CID, :E, -K, +MS, -Q | |------------------------------------------------------------| | S-Registers | |------------------------------------------------------------| | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S18, | | S24, S25, S26, S29, S30, S32, S33, S36 | |------------------------------------------------------------| | S38, S39, S46, S48, S82, S86, S95 | |------------------------------------------------------------| | Note: See MHI documentation for complete information. | +------------------------------------------------------------+ +------------------------------------------------------------+ | UNIDENTIFIED COMMANDS | |------------------------------------------------------------| | Command | Default | |----------------------------+-------------------------------| | \K | Unidentified | |----------------------------+-------------------------------| | S14 | Unidentified | |----------------------------+-------------------------------| | S16 | Unidentified | |----------------------------+-------------------------------| | S21 | Unidentified | |----------------------------+-------------------------------| | S22 | Unidentified | |----------------------------+-------------------------------| | S23 | Unidentified | |----------------------------+-------------------------------| | S27 | Unidentified | |----------------------------+-------------------------------| | S28 | Unidentified | |----------------------------+-------------------------------| | S31 | Unidentified | |----------------------------+-------------------------------| | S40 | Unidentified | |----------------------------+-------------------------------| | S41 | Unidentified | +------------------------------------------------------------+ Proprietary AT Command Set +------------------------------------------------------------+ | DIAL | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] D<#>;[cmds] | |--------------+---------------------------------------------| | Description: | Dials the telephone number indicated | | | according to any modifiers included in the | | | string. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | DL | Re-dial last number. | |--------------+---------------------------------------------| | DP | Pulse dialing enabled. | |--------------+---------------------------------------------| | DS=n | Dial stored telephone number n. | |--------------+---------------------------------------------| | DT | Tone dialing enabled. | |--------------+---------------------------------------------| | DW | Dialing resumed following dial tone | | | detection. | |--------------+---------------------------------------------| | D, | Dialing paused for amount of time specified | | | in S8 register. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIAL (CON'T) | |------------------------------------------------------------| | Command | Function | |---------+--------------------------------------------------| | D! | Flash function initiated. Modem commanded to go | | | off-hook for specified time before returning | | | on-hook. | |---------+--------------------------------------------------| | D@ | Wait for Quiet Answer function enabled. Modem | | | waits until a "quiet answer," a ring-back signal | | | followed by silence up to the time specified in | | | S7, is received prior to executing the rest of | | | the dial string. | |---------+--------------------------------------------------| | D^ | Calling tone enabled for this call. | |---------+--------------------------------------------------| | D& | Wait for prompt tone detection function enabled. | | | Waits for prompt tone for amount of time | | | specified by the S7 command. | |---------+--------------------------------------------------| | D; | Modem returned to idle state after dialing. The | | | semicolon can only be placed at the end of the | | | dial command. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISPLAY CHIPSET MANUFACTURER | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #MFR? [cmds] | |--------------+---------------------------------------------| | Description: | Displays the voice chipset manufacturer's | | | name. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISPLAY CHIPSET MODEL NAME | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #MDL? [cmds] | |--------------+---------------------------------------------| | Description: | Displays the model name of the modem's | | | voice chipset. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISPLAY CHIPSET REVISION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #REV? [cmds] | |--------------+---------------------------------------------| | Description: | Displays the revision level of the modem's | | | voice chipset. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISPLAY INFORMATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] In [cmds] | |--------------+---------------------------------------------| | Description: | Displays information requested about the | | | modem. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | I0 | Displays product identification code. | |--------------+---------------------------------------------| | I1 | Displays ROM checksum. | |--------------+---------------------------------------------| | I2 | Tests and displays ROM checksum result. | |--------------+---------------------------------------------| | I3 | Displays firmware revision. | |--------------+---------------------------------------------| | I4 | Displays modem identifier. | |--------------+---------------------------------------------| | I5 | Displays country code. | |--------------+---------------------------------------------| | I6 | Displays data pump modem and revision. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISTINCTIVE RING | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $$Rn [cmds] | |--------------+---------------------------------------------| | Description: | Selects whether the modem will use the | | | Distinctive Ring function. | |------------------------------------------------------------| | Command | Function | |--------------------+---------------------------------------| | i $$R0 | Distinctive Ring disabled. | |--------------------+---------------------------------------| | $$R2 | Distinctive Ring enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISTINCTIVE RING TYPES | |------------------------------------------------------------| | Format: | AT [cmds] -SDR=n [cmds] | |----------------+-------------------------------------------| | Default: | Unidentified | |----------------+-------------------------------------------| | Range: | 0 - 7 | |----------------+-------------------------------------------| | Description: | Selects which distinctive ring signals | | | the modem will respond to. | |------------------------------------------------------------| | Bit | Value | Function | |----------+-------+-----------------------------------------| | 0 | 0 | Do not respond to distinctive ring type | | | | 1. | | | 1 | | | | | Respond to distinctive ring type 1. | |----------+-------+-----------------------------------------| | 1 | 0 | Do not respond to distinctive ring type | | | | 2. | | | 1 | | | | | Respond to distinctive ring type 2. | |----------+-------+-----------------------------------------| | 2 | 0 | Do not respond to distinctive ring type | | | | 3. | | | 1 | | | | | Respond to distinctive ring type 3. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LINE SPEED | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S37=n [cmds] | |--------------+---------------------------------------------| | Description: | Sets the maximum allowable data exchange | | | rate attempted during the handshaking | | | process. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i S37=0 | Attempt to connect at fastest common speed. | |--------------+---------------------------------------------| | S37=1 | Set speed to 300bps. | |--------------+---------------------------------------------| | S37=2 | Set speed to 300bps. | |--------------+---------------------------------------------| | S37=3 | Set speed to 300bps. | |--------------+---------------------------------------------| | S37=5 | Set speed to 1200bps. | |--------------+---------------------------------------------| | S37=6 | Set speed to 2400bps. | |--------------+---------------------------------------------| | S37=7 | Attempt to connect with V.23. | |--------------+---------------------------------------------| | S37=8 | Set speed to 4800bps. | |--------------+---------------------------------------------| | S37=9 | Set speed to 9600bps. | |--------------+---------------------------------------------| | S37=10 | Set speed to 12Kbps. | |--------------+---------------------------------------------| | S37=11 | Set speed to 14.4Kbps. | |--------------+---------------------------------------------| | S37=12 | Set speed to 7200bps. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MODE SELECTION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #CLS=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects which mode the modem will operate | | | in. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | #CLS=0 | Modem will operate in data mode. | |--------------+---------------------------------------------| | #CLS=1 | Modem will operate in fax class 1 mode. | |--------------+---------------------------------------------| | #CLS=8 | Modem will operate in voice mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10EC MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] -SEC=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects whether the modem will attempt to | | | use MNP10EC mode during the handshaking | | | sequence. | |------------------------------------------------------------| | Command | Function | |-----------------+------------------------------------------| | -SEC=0 | MNP10EC handshaking disabled unless a | | | V.34 connection is attempted via a | | | cellular line. | |-----------------+------------------------------------------| | i -SEC=1 | MNP10EC handshaking enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | SPEAKERPHONE OPTIONS | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #SPK=x,y,z [cmds] | |--------------+---------------------------------------------| | Description: | Sets various options for speakerphone | | | functions. | |------------------------------------------------------------| | Command | Function | |---------------+--------------------------------------------| | x=0 | Microphone enabled. | |---------------+--------------------------------------------| | x=1 | Microphone disabled. | |---------------+--------------------------------------------| | x=2 | Microphone enabled with maximum gain, | | | speaker disabled. | |---------------+--------------------------------------------| | y | Default: | 5 | |---------------+--------------+-----------------------------| | | Range: | 0 - 16 | |---------------+--------------+-----------------------------| | | Unit: | -2 dBm | |---------------+--------------+-----------------------------| | | Description: | Sets the attenuation level | | | | for speaker output in voice | | | | mode. A value of 16 will | | | | mute the speaker. | |---------------+--------------------------------------------| | z=0 | Microphone gain set to 0 dBm. | |---------------+--------------------------------------------| | z=1 | Microphone gain set to 6 dBm. | |---------------+--------------------------------------------| | z=2 | Microphone gain set to 9.5 dBm. | |---------------+--------------------------------------------| | z=3 | Microphone gain set to 12 dBm. | +------------------------------------------------------------+ +------------------------------------------------------------+ | SVD OPTIONS | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] $$ASn =xx [cmds] | |--------------+---------------------------------------------| | Description: | Selects whether the modem will use SVD mode | | | and selects the line source for it. | |------------------------------------------------------------| | Command | Function | |----------------+-------------------------------------------| | $$ASn =OFF | SVD enabled | |----------------+-------------------------------------------| | $$ASn =ON | SVD disabled. | |----------------+-------------------------------------------| | n=1 | Telephone handset used for voice I/O with | | | high data throughput. | |----------------+-------------------------------------------| | n=2 | Telephone handset used for voice I/O with | | | high voice throughput. | |----------------+-------------------------------------------| | n=3 | Telephone line used for voice I/O with | | | high data throughput. | |----------------+-------------------------------------------| | n=4 | Telephone line used for voice I/O with | | | high voice throughput. | |----------------+-------------------------------------------| | i n=5 | Speakerphone used for voice I/O with high | | | data throughput. | |----------------+-------------------------------------------| | n=6 | Speakerphone used for voice I/O with high | | | voice throughput. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TONE DETECTION | |------------------------------------------------------------| | Format: | AT [cmds] #VTD=x,y,z [cmds] | |----------------+-------------------------------------------| | Default: | x,y,z 63 | |----------------+-------------------------------------------| | Range: | 0 - 63 | |----------------+-------------------------------------------| | Description: | Sets which tones the tone detection will | | | report. | |----------------+-------------------------------------------| | Note: | The value of x sets the tone detection | | | modes in voice transmit mode, y sets them | | | in voice receive mode, and z sets them in | | | voice command mode. | |------------------------------------------------------------| | Bit | Value | Function | |---------+-------+------------------------------------------| | 0 | 0 | DTMF tones are not detected. | | | | | | | i 1 | DTMF tones are detected. | |------------------------------------------------------------| | 1 | 0 | V.25 1300Hz calling tone is not | | | | detected. | | | i | | | | 1 | V.25 1300Hz calling tone is detected. | |-------------+----+-----------------------------------------| | 2 | 0 | T.30 1100Hz fax tone is not detected. | | | | | | | i | T.30 1100Hz fax tone is detected. | | | 1 | | |-------------+----+-----------------------------------------| | 3 | 0 | V.25/T.30 2100Hz answer tone is not | | | | detected. | | | i | | | | 1 | V.25/T.30 2100Hz answer tone is | | | | detected. | |-------------+----+-----------------------------------------| | 4 | 0 | Bell 2225Hz answer tone is not | | | | detected. | | | i | | | | 1 | Bell 2225Hz answer tone is detected. | |-------------+----+-----------------------------------------| | 5 | 0 | Call progress tones are not detected. | | | | | | | i | Call progress tones are detected. | | | 1 | | +------------------------------------------------------------+ +------------------------------------------------------------+ | TONE GENERATOR - DIRECT ENTRY | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #VTS=[m, n, x] | |--------------+---------------------------------------------| | Range: | m 200-3000, n 200-3000, x 0-255 | |--------------+---------------------------------------------| | Unit: | m 1 Hz, n 1 Hz, x .1 second | |--------------+---------------------------------------------| | Description: | Generates a dual-frequency tone for | | | duration x at frequencies m and n. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TONE GENERATOR - TIMED PHONE KEYS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #VTS={a, n} | |--------------+---------------------------------------------| | Range: | a 0-9, A-D, #, *; n 0-255 | |--------------+---------------------------------------------| | Unit: | x .1 second | |--------------+---------------------------------------------| | Description: | Generates the DTMF tone for duration x for | | | the character a. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TONE GENERATOR - PHONE KEYS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #VTS=a | |--------------+---------------------------------------------| | Range: | 0-9, A-D, #, * | |--------------+---------------------------------------------| | Description: | Generates the DTMF tones for the characters | | | in the string for the duration set with | | | +VBT. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TONE GENERATOR LENGTH | |------------------------------------------------------------| | Format | AT [cmds] #VBT=n [cmds] | |--------------+---------------------------------------------| | Default: | 10 | |--------------+---------------------------------------------| | Range: | 0 - 40 | |--------------+---------------------------------------------| | Unit: | 0.1 second | |--------------+---------------------------------------------| | Description: | Sets the length of DTMF tones that are | | | generated. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE DEVICE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VLS=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects the I/O device for the DSP chip. | |--------------+---------------------------------------------| | Note: | This modem may not support all options | | | listed below. The #VLS? command will | | | display the available options. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i #VLS=0 | Telephone line and handset used for voice | | | I/O. | |--------------+---------------------------------------------| | #VLS=1 | Telephone handset used for voice I/O. | |--------------+---------------------------------------------| | #VLS=2 | Internal speaker only used for voice I/O. | |--------------+---------------------------------------------| | #VLS=3 | External microphone only used for voice | | | I/O. | |--------------+---------------------------------------------| | #VLS=4 | Telephone line and handset used for voice | | | I/O; internal speaker enabled. | |--------------+---------------------------------------------| | #VLS=5 | Headset used for voice I/O. | |--------------+---------------------------------------------| | #VLS=6 | Speakerphone used for voice I/O. | |--------------+---------------------------------------------| | #VLS=7 | Handset muted by disconnecting handset or | | | speakerphone from telephone line. | |--------------+---------------------------------------------| | #VLS=8 | Connects caller ID relay for recording of | | | conversation over handset. | |--------------+---------------------------------------------| | #VLS=9 | Connects handset (or speakerphone) to DSP | | | chip for recording or playback. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE - DISPLAY BUFFER SIZE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #VBQ? [cmds] | |--------------+---------------------------------------------| | Description: | Displays the size of the voice buffer. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE - DISPLAY COMPRESSION TYPE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #VCI? [cmds] | |--------------+---------------------------------------------| | Description: | Displays the type of compression currently | | | in use. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE - LOCAL SERIAL PORT SPEED | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #BDR=n [cmds] | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0 - 48 | |--------------+---------------------------------------------| | Unit: | 2400bps | |--------------+---------------------------------------------| | Description: | Sets the speed of the local serial port | | | when in voice mode. A value of 0 indicates | | | that the modem should auto-detect the | | | correct serial port speed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE RE-RING DETECT TIME | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VRA=n [cmds] | |--------------+---------------------------------------------| | Default: | 70 | |--------------+---------------------------------------------| | Range: | 0 -255 | |--------------+---------------------------------------------| | Unit: | 10 mS | |--------------+---------------------------------------------| | Description: | Sets the maximum time the modem will wait | | | for the remote station to ring again before | | | it assumes that it has gone off-hook. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE RECEIVE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #VRX | |--------------+---------------------------------------------| | Description: | Commands the modem to begin receiving voice | | | data. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE RING DETECT TIME | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VRN=n [cmds] | |--------------+---------------------------------------------| | Default: | 70 | |--------------+---------------------------------------------| | Range: | 0 - 255 | |--------------+---------------------------------------------| | Unit: | .1 second | |--------------+---------------------------------------------| | Description: | Sets the maximum time the modem will wait | | | for the remote station to ring before it | | | assumes that it went off-hook before it | | | rang. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE SAMPLE QUALITY | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VBS=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects the number of bits per sample that | | | the modem records. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | #VBS=2 | Modem records 2 bits per sample in ADPCM | | | encoding. | |--------------+---------------------------------------------| | i #VBS=4 | Modem records 4 bits per sample in ADPCM | | | encoding. | |--------------+---------------------------------------------| | #VBS=8 | Modem records 8 bits per sample in PCM | | | encoding. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE SAMPLING RATE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VSR=n [cmds] | |--------------+---------------------------------------------| | Description: | Sets the sampling rate used when recording | | | voice signals. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i #VSR=7200 | Selects a sampling rate of 7.2KHz. | |--------------+---------------------------------------------| | #VSR=11025 | Selects a sampling rate of 11.025KHz in PCM | | | encoding only. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE SILENCE DETECTION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VSD=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects whether the modem will use silence | | | detection to pause recording during periods | | | of silence. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i #VSD=0 | Silence detection disabled. | |--------------+---------------------------------------------| | #VSD=1 | Silence detection enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE SILENCE DETECTION TIME | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VSP=n [cmds] | |--------------+---------------------------------------------| | Default: | 55 | |--------------+---------------------------------------------| | Range: | 0 - 255 | |--------------+---------------------------------------------| | Unit: | .1 second | |--------------+---------------------------------------------| | Description: | Sets the minimum amount of silence that the | | | modem will detect. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE SILENCE DETECTION THRESHOLD | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VSS=n [cmds] | |--------------+---------------------------------------------| | Description: | Sets the threshold of sensitivity that the | | | modem uses to determine silence detection. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | #VSS=0 | Silence detection disabled. | |--------------+---------------------------------------------| | #VSS=1 | Minimum silence detection sensitivity. | |--------------+---------------------------------------------| | #VSS=2 | Standard silence detection sensitivity. | |--------------+---------------------------------------------| | #VSS=3 | Maximum silence detection sensitivity. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE TIMING MARK | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VTM=n [cmds] | |--------------+---------------------------------------------| | Description: | Configures timing mark placement. | |------------------------------------------------------------| | Command | Function | |---------------------+--------------------------------------| | i #VTM=0 | Timing marks disabled. | |---------------------+--------------------------------------| | #VTM=10 | Timing marks enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE TRANSMISSION LEVEL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #TL=hhhh [cmds] | |--------------+---------------------------------------------| | Default: | 3FFF | |--------------+---------------------------------------------| | Range: | 0000 - 7FFF | |--------------+---------------------------------------------| | Unit: | Unidentified (hexadecimal) | |--------------+---------------------------------------------| | Description: | Sets the transmission level for sending | | | audio in voice mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE TRANSMIT | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] #VTX | |--------------+---------------------------------------------| | Description: | Commands the modem to begin transmitting | | | voice data. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE VOLUME LEVEL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VGT=n [cmds] | |--------------+---------------------------------------------| | Default: | 153 | |--------------+---------------------------------------------| | Range: | 128 - 228 | |--------------+---------------------------------------------| | Unit: | Unidentified | |--------------+---------------------------------------------| | Description: | Sets the volume level when playing back | | | audio signals. Lower numbers indicate a | | | lower volume level. | +------------------------------------------------------------+