(TXT) View Source
# 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
(IMG) IMG 1
+------------------------------------------------------------+
| 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 |
|----------------------------------------+-------+-----------|
| í Speaker jack is monaural | J16 | Open |
|----------------------------------------+-------+-----------|
| Speaker jack is stereo | J16 | Closed |
|----------------------------------------+-------+-----------|
| í 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] $$Rn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will use the |
| | Distinctive Ring function. |
|------------------------------------------------------------|
| Command | Function |
|--------------------+---------------------------------------|
| í $$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 |
|--------------+---------------------------------------------|
| í 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. |
|-----------------+------------------------------------------|
| í -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. |
|----------------+-------------------------------------------|
| í 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. |
| | | |
| | í 1 | DTMF tones are detected. |
|------------------------------------------------------------|
| 1 | 0 | V.25 1300Hz calling tone is not |
| | | detected. |
| | í | |
| | 1 | V.25 1300Hz calling tone is detected. |
|-------------+----+-----------------------------------------|
| 2 | 0 | T.30 1100Hz fax tone is not detected. |
| | | |
| | í | T.30 1100Hz fax tone is detected. |
| | 1 | |
|-------------+----+-----------------------------------------|
| 3 | 0 | V.25/T.30 2100Hz answer tone is not |
| | | detected. |
| | í | |
| | 1 | V.25/T.30 2100Hz answer tone is |
| | | detected. |
|-------------+----+-----------------------------------------|
| 4 | 0 | Bell 2225Hz answer tone is not |
| | | detected. |
| | í | |
| | 1 | Bell 2225Hz answer tone is detected. |
|-------------+----+-----------------------------------------|
| 5 | 0 | Call progress tones are not detected. |
| | | |
| | í | 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 |
|--------------+---------------------------------------------|
| í #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. |
|--------------+---------------------------------------------|
| í #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 |
|--------------+---------------------------------------------|
| í #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 |
|--------------+---------------------------------------------|
| í #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 |
|---------------------+--------------------------------------|
| í #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. |
+------------------------------------------------------------+