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# APACHE MICRO PERIPHERALS, INC.
APACHE V34IV-SP+
Card Type Modem (synchronous/asynchronous)
Chip Set Unidentified
I/O Options Voice, speakerphone
Maximum Data Rate 33.6Kbps
Maximum Fax Rate 14.4Kbps
Data Bus Unidentified
Fax Class Class I & II
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 Unidentified
Protocol
Error MNP5, V.42, V.42bis, RPI
Correction/Compression
52997
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|-------------------------------------+-------+--------------|
| í Factory configured - do not alter | SW1/7 | Unidentified |
|-------------------------------------+-------+--------------|
| í Factory configured - do not alter | SW1/8 | N/A |
|------------------------------------------------------------|
| Note: SW1/8 may not be present on all models. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| Setting | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
|------------+-----------+-----------+-----------+-----------|
| í IRQ3 | Off | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| IRQ4 | Off | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| IRQ5 | Off | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| IRQ7 | On | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | SW1/5 | SW1/6 |
|--------------------+-------------------+-------------------|
| 3F8h (COM1:) | On | On |
|--------------------+-------------------+-------------------|
| 2F8h (COM2:) | Off | On |
|--------------------+-------------------+-------------------|
| 3E8h (COM3:) | On | Off |
|--------------------+-------------------+-------------------|
| í 2E8h (COM4:) | Off | Off |
+------------------------------------------------------------+
+------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------|
| Diagram not available. |
+------------------------------+
+------------------------------------------------------------+
| SUPPORTED STANDARD COMMANDS |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| +++, ‘comma’, A/ |
|------------------------------------------------------------|
| A, B, D, E, H, L, M, N, O, P, Q, T, V, W, X, Y |
|------------------------------------------------------------|
| &C, &D, &F, &G, &K, &M, &P, &Q, &R, &S, &T, &V, &W, &X, |
| &Y, &Z |
|------------------------------------------------------------|
| Extended AT Commands |
|------------------------------------------------------------|
| \A, \B, \K, \N, \V |
|------------------------------------------------------------|
| %C, %E, %F, %L, %Q, %TT |
|------------------------------------------------------------|
| Special AT Commands |
|------------------------------------------------------------|
| #CID, +MS |
|------------------------------------------------------------|
| S-Registers |
|------------------------------------------------------------|
| The S-registers are unidentified. |
|------------------------------------------------------------|
| Note: See MHI documentation for complete information. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| DISPLAY MANUFACTURER |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #MFR? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the manufacturer’s name. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY MODEL NAME |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #MDL? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the model name of the modem. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY REVISION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #REV? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the revision level of the modem. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISTINCTIVE RING |
|------------------------------------------------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DSVD MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -SSE=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Select whether the modem will use DSVD |
| | mode. |
|------------------------------------------------------------|
| Command | Function |
|---------------------------+--------------------------------|
| í -SSE=0 | DSVD mode disabled. |
|---------------------------+--------------------------------|
| -SSE=1 | DSVD mode enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FIRMWARE DOWNLOAD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] **n [cmds] |
|--------------+---------------------------------------------|
| Description: | Downloads new code to the firmware flash |
| | memory. |
|------------------------------------------------------------|
| Command | Function |
|-----------------+------------------------------------------|
| **0 | Download at speed of last command. |
|-----------------+------------------------------------------|
| **1 | Download at 38.4Kbps. |
|-----------------+------------------------------------------|
| **2 | Download at 57.6Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 I mode. |
|---------------+--------------------------------------------|
| #CLS=2 | Modem will operate in fax class II mode. |
|---------------+--------------------------------------------|
| #CLS=8 | Modem will operate in voice mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROTOCOL/SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Fn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the protocol and speed the modem |
| | will attempt to connect at. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| F0 | Auto-detect the highest common connect |
| | speed. |
|--------------+---------------------------------------------|
| F1 | Select V.21 or Bell 103 at 300bps speed. |
|--------------+---------------------------------------------|
| F3 | Select V.23 at 75/1200bps speed. |
|--------------+---------------------------------------------|
| F4 | Select V.22 or Bell 212A at 1200bps speed. |
|--------------+---------------------------------------------|
| F5 | Select V.22bis at 2400bps speed. |
|--------------+---------------------------------------------|
| F6 | Select V.32 or V.32bis at 4800bps speed. |
|--------------+---------------------------------------------|
| F7 | Select V.32bis at 7200bps speed. |
|--------------+---------------------------------------------|
| F8 | Select V.32bis or V.32 at 9600bps speed. |
|--------------+---------------------------------------------|
| F9 | Select V.32bis at 12Kbps speed. |
|--------------+---------------------------------------------|
| F10 | Select V.32bis at 14.4Kbps speed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT INFORMATION |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] In [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays requested information about the |
| | modem. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| I0 | Reports product identification code. |
|--------------+---------------------------------------------|
| I1 | Reports ROM checksum. |
|--------------+---------------------------------------------|
| I2 | Tests and reports ROM checksum. |
|--------------+---------------------------------------------|
| I3 | Reports modem firmware version and |
| | interface type. |
|--------------+---------------------------------------------|
| I4 | Reports OEM response. |
|--------------+---------------------------------------------|
| I5 | Reports country code. |
|--------------+---------------------------------------------|
| I6 | Reports data pump model and revision. |
|--------------+---------------------------------------------|
| I7 | Reports DAA code. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RPI CONFIGURATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] +Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Configures the Rockwell Protocol Interface. |
|------------------------------------------------------------|
| Command | Function |
|-----------------+------------------------------------------|
| +H0 | RPI disabled. |
|-----------------+------------------------------------------|
| +H1 | RPI enabled and local serial port speed |
| | set to 19.2Kbps. |
|-----------------+------------------------------------------|
| +H2 | RPI enabled and local serial port speed |
| | set to 38.4Kbps. |
|-----------------+------------------------------------------|
| +H3 | RPI enabled and local serial port speed |
| | set to 57.6Kbps. |
|-----------------+------------------------------------------|
| +H11 | RPI+ 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. |
|------------------------------------------------------------|
| Default (y): | 5 |
|--------------+---------------------------------------------|
| Range (y): | 0 - 16 |
|--------------+---------------------------------------------|
| Unit (y): | -2 dBm |
|--------------+---------------------------------------------|
| Description | Sets the attenuation level for speaker |
| (y): | output in voice mode. |
|------------------------------------------------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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, #, *; x 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 BUFFER SPACE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #VSK=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 255 |
|--------------+---------------------------------------------|
| Range: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 1 byte |
|--------------+---------------------------------------------|
| Description: | Sets the amount of data the modem can send |
| | into the buffer after the XOFF signal is |
| | sent. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE DEVICE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #VLS=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the I/O device for the DSP chip. |
|--------------+---------------------------------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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] |
|--------------+---------------------------------------------|
| Description: | Sets the speed of the local serial port |
| | when in voice mode. |
|------------------------------------------------------------|
| Command | Function |
|-----------------------+------------------------------------|
| #BDR=1 | Set speed to 2400bps. |
|-----------------------+------------------------------------|
| #BDR=2 | Set speed to 4800bps. |
|-----------------------+------------------------------------|
| #BDR=4 | Set speed to 9600bps. |
|-----------------------+------------------------------------|
| #BDR=6 | Set speed to 14.4Kbps. |
|-----------------------+------------------------------------|
| #BDR=8 | Set speed to 19.2Kbps. |
|-----------------------+------------------------------------|
| #BDR=16 | Set speed to 38.4Kbps. |
|-----------------------+------------------------------------|
| #BDR=24 | Set speed to 57.6Kbps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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: | Unidentified |
|--------------+---------------------------------------------|
| Range: | Unidentified |
|--------------+---------------------------------------------|
| Unit: | Unidentified |
|--------------+---------------------------------------------|
| 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. |
|----------------+-------------------------------------------|
| #VBS=3 | Modem records 3 bits per sample in ADPCM |
| | encoding. |
|----------------+-------------------------------------------|
| í #VBS=4 | Modem records 4 bits per sample in ADPCM |
| | encoding. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE SAMPLING RATE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #VSR=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the sampling rate used when recording |
| | voice signals. |
|------------------------------------------------------------|
| Command | Function |
|----------------+-------------------------------------------|
| #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 TIME |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #VSP=n [cmds] |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| 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 |
|---------------------+--------------------------------------|
| #VTM=0 | Timing marks disabled. |
|---------------------+--------------------------------------|
| #VTM=1 | 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] |
|--------------+---------------------------------------------|
| Description: | Sets the volume level when playing back |
| | audio signals. |
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