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# ACS COMPUTER GROUP
V.34 PLUG AND PLAY INTERNAL
Card Type Modem (asynchronous)
Chipset Unidentified
I/O Options Voice, speakerphone
Maximum Data Rate 33.6Kbps
Maximum Fax Rate 14.4Kbps
Data Bus 16-bit ISA
Fax Class Class I
Data Modulation Bell 103A/212A
ITU-T V.21, V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Fax Modulation ITU-T V.17, V.27ter, V.29
Error MNP5, V.42, V.42bis
Correction/Compression
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+---------------------+-------|
| Line in | CN1 | Line out | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SUPPORTED STANDARD COMMANDS |
|------------------------------------------------------------|
| Basic AT Commands |
|------------------------------------------------------------|
| +++, ‘comma’, A/ |
|------------------------------------------------------------|
| A, E, H, L, M, N, O, P, Q, T, V, W, X, Y, Z |
|------------------------------------------------------------|
| &C, &D, &F, &G, &K, &P, &S, &T, &V, &W, &Y, &Z |
|------------------------------------------------------------|
| Extended AT Commands |
|------------------------------------------------------------|
| \A, \B, \G, \K, \L, \N |
|------------------------------------------------------------|
| %C, %E, %L, %Q |
|------------------------------------------------------------|
| Special AT Commands |
|------------------------------------------------------------|
| #CID |
|------------------------------------------------------------|
| S-Registers |
|------------------------------------------------------------|
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, |
| S18, S25, S30, S32, S33, S38, S91 |
|------------------------------------------------------------|
| Note: See MHI documentation for complete information. |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| COMMUNICATION PROTOCOLS |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] Bn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the communication protocol for |
| | low-speed data calls. |
|--------------+---------------------------------------------|
| Command | Protocol |
|--------------+---------------------------------------------|
| B0 | Modem will use ITU-T V.22 at 300 or |
| | 1200bps. |
|--------------+---------------------------------------------|
| í B1 | Modem will use Bell 212A at 300 or 1200bps. |
|--------------+---------------------------------------------|
| B2 | Modem will use V.23 at 1200bps. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECTION FAILURE CODE |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S86? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays a code which corresponds to the |
| | reason the connection failed. |
|--------------+---------------------------------------------|
| Value | Meaning |
|--------------+---------------------------------------------|
| 0 | No failure - normal hang up. |
|--------------+---------------------------------------------|
| 4 | Carrier signal lost. |
|--------------+---------------------------------------------|
| 5 | No error-control detected for remote modem |
| | during feature negotiation. |
|--------------+---------------------------------------------|
| 6 | Remote modem failed to respond to feature |
| | negotiation. |
|--------------+---------------------------------------------|
| 9 | No common protocol found. |
|--------------+---------------------------------------------|
| 12 | No failure - remote modem disconnected |
| | normally. |
|--------------+---------------------------------------------|
| 13 | Remote modem failed to respond after 10 |
| | re-transmissions same message. |
|--------------+---------------------------------------------|
| 14 | Violation of negotiated protocol caused |
| | failure. |
|--------------+---------------------------------------------|
| 20 | Inactivity time out. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] D<#>;[cmds] |
|--------------+---------------------------------------------|
| Description: | Dials the telephone number indicated |
| | according to any modifiers included in the |
| | string. |
|--------------+---------------------------------------------|
| Note: | Any combination of modifiers can be used to |
| | produce the desired dial functions in |
| | sequence. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| DL | Re-dial last number. |
|--------------+---------------------------------------------|
| DP | Pulse dialing enabled. |
|--------------+---------------------------------------------|
| DSn | 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. |
|--------------+---------------------------------------------|
| D! | Flash function initiated. Modem commanded |
| | to go off-hook for specified time before |
| | returning on-hook. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAL (CON’T) |
|------------------------------------------------------------|
| Command | Function |
|---------+--------------------------------------------------|
| 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^ | Enable calling tone for this call. |
|---------+--------------------------------------------------|
| D; | Modem returned to idle state after dialing. The |
| | semicolon can only be placed at the end of the |
| | dial command. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Displays internal code. |
|--------------+---------------------------------------------|
| I3 | Displays firmware revision. |
|--------------+---------------------------------------------|
| I4 | Displays product features. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DISPLAY MANUFACTURER |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #MFR? [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays the chipset 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HELP |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &$ [cmds] |
|--------------+---------------------------------------------|
| Description: | Displays a help screen of all ampersand |
| | commands. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SPEED |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format | AT [cmds] S37=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum connect speed attempted |
| | during handshake process. |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| í S37=0 | Attempt fastest speed connection possible. |
|--------------+---------------------------------------------|
| S37=3 | Attempt to connect at 300bps. |
|--------------+---------------------------------------------|
| S37=4 | Attempt to connect at 1200bps. |
|--------------+---------------------------------------------|
| S37=6 | Attempt to connect at 2400bps. |
|--------------+---------------------------------------------|
| S37=7 | Attempt to connect at 4800bps. |
|--------------+---------------------------------------------|
| S37=8 | Attempt to connect at 7200bps. |
|--------------+---------------------------------------------|
| S37=9 | Attempt to connect at 9600bps. |
|--------------+---------------------------------------------|
| S37=10 | Attempt to connect at 12Kbps. |
|--------------+---------------------------------------------|
| S37=11 | Attempt to connect at 14.4Kbps. |
|--------------+---------------------------------------------|
| S37=12 | Attempt a V.34 connection. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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=8 | Modem will operate in voice mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SPEAKERPHONE OPTIONS |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #SPK=x,y,z [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets various options for speakerphone |
| | functions. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| x=0 | Microphone disabled. |
|---------------+--------------------------------------------|
| x=1 | Microphone enabled. |
|---------------+--------------------------------------------|
| 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 2000-3000, n 2000-3000, 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. |
| | Specifying a 0 for one frequency will |
| | generate a single-frequency tone. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRELLIS CODING |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] &Un [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects whether the modem will use trellis |
| | coding. |
|------------------------------------------------------------|
| Command | Function |
|-----------------------+------------------------------------|
| í &U0 | Trellis coding enabled. |
|-----------------------+------------------------------------|
| &U1 | Trellis coding disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.34 MINIMUM BAUD RATE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S35=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects the minimum baud rate for V.34 |
| | mode. |
|------------------------------------------------------------|
| Command | Function |
|---------------------+--------------------------------------|
| í S35=0 | Minimum baud rate is 2400 baud. |
|---------------------+--------------------------------------|
| S35=1 | Minimum baud rate is 2743 baud. |
|---------------------+--------------------------------------|
| S35=2 | Minimum baud rate is 2800 baud. |
|---------------------+--------------------------------------|
| S35=3 | Minimum baud rate is 3000 baud. |
|---------------------+--------------------------------------|
| S35=4 | Minimum baud rate is 3200 baud. |
|---------------------+--------------------------------------|
| S35=5 | Minimum baud rate is 3429 baud. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| V.34 LINE SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S34=n [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects what speed the modem will attempt |
| | to connect at in V.34 mode. |
|------------------------------------------------------------|
| Command | Function |
|---------------+--------------------------------------------|
| S34=0 | Modem will attempt to connect at 2400bps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=1 | Modem will attempt to connect at 4800bps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=2 | Modem will attempt to connect at 7200bps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=3 | Modem will attempt to connect at 9600bps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=4 | Modem will attempt to connect at 12Kbps in |
| | V.34 mode. |
|---------------+--------------------------------------------|
| S34=5 | Modem will attempt to connect at 14.4Kbps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=6 | Modem will attempt to connect at 16.8Kbps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=7 | Modem will attempt to connect at 19.2Kbps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=8 | Modem will attempt to connect at 21.6Kbps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=9 | Modem will attempt to connect at 24Kbps in |
| | V.34 mode. |
|---------------+--------------------------------------------|
| S34=10 | Modem will attempt to connect at 26.4Kbps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=11 | Modem will attempt to connect at 28.8Kbps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| S34=12 | Modem will attempt to connect at 31.2Kbps |
| | in V.34 mode. |
|---------------+--------------------------------------------|
| í S34=13 | Modem will attempt to connect at 33.6Kbps |
| | in V.34 mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 - 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 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=4 | Telephone line and handset used for voice |
| | I/O; internal speaker enabled. |
|--------------+---------------------------------------------|
| #VLS=6 | Speakerphone used for voice I/O. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE - LOCAL SERIAL PORT SPEED |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #BDR=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0 - 48 |
|--------------+---------------------------------------------|
| Unit: | 2400 bps |
|--------------+---------------------------------------------|
| Description: | Sets the speed of the local serial port |
| | when in voice mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE RECORD GAIN |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #RG=hhhh [cmds] |
|--------------+---------------------------------------------|
| Default: | 7FFF |
|--------------+---------------------------------------------|
| Range: | 0000 - 7FFF |
|--------------+---------------------------------------------|
| Unit: | Unidentified (hexadecimal) |
|--------------+---------------------------------------------|
| Description: | Sets the gain level for recording in voice |
| | mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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: | 0 - 255 |
|--------------+---------------------------------------------|
| Unit: | 10 mS |
|--------------+---------------------------------------------|
| 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 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. |
|----------------+-------------------------------------------|
| í #VSS=2 | Standard silence detection sensitivity. |
|----------------+-------------------------------------------|
| #VSS=3 | Maximum silence detection sensitivity. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE TRANSMISSION GAIN LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #TL=hhhh [cmds] |
|--------------+---------------------------------------------|
| Default: | 3FFF |
|--------------+---------------------------------------------|
| Range: | 0000 - 7FFF |
|--------------+---------------------------------------------|
| Unit: | Unidentified (hexadecimal) |
|--------------+---------------------------------------------|
| Description: | Sets the gain level for sending audio in |
| | voice mode. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VOICE TRANSMIT |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] #VTX |
|--------------+---------------------------------------------|
| Description: | Commands the modem to begin transmitting |
| | voice data. |
+------------------------------------------------------------+