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 Protocol |
Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC |
|
Fax Modulation Protocol |
ITU-T V.17, V.21CH2, V.27ter, V.29, V.33 |
|
Fax Class |
Class I |
|
Error Correction/Compression |
MNP5, MNP10EC, V.42, V.42bis |
|
Data Bus |
16-bit ISA |
|
CONNECTIONS | |||
|
Function |
Label |
Function |
Label |
|
Telephone line out |
CN1 |
Speaker out |
CN3 |
|
Telephone line in |
CN2 |
Microphone in |
CN4 |
|
USER CONFIGURABLE SETTINGS | ||
|
Setting |
Label |
Position |
|
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 1 |
Do not respond to distinctive ring type 1. Respond to distinctive ring type 1. | |
|
1 |
0 1 |
Do not respond to distinctive ring type 2. Respond to distinctive ring type 2. | |
|
2 |
0 1 |
Do not respond to distinctive ring type 3. 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 í 1 |
DTMF tones are not detected. DTMF tones are detected. | |||
|
1 |
0 í 1 |
V.25 1300Hz calling tone is not detected. V.25 1300Hz calling tone is detected. | |||
|
2 |
0 í 1 |
T.30 1100Hz fax tone is not detected. T.30 1100Hz fax tone is detected. | |||
|
3 |
0 í 1 |
V.25/T.30 2100Hz answer tone is not detected. V.25/T.30 2100Hz answer tone is detected. | |||
|
4 |
0 í 1 |
Bell 2225Hz answer tone is not detected. Bell 2225Hz answer tone is detected. | |||
|
5 |
0 í 1 |
Call progress tones are not detected. Call progress tones are detected. | |||
|
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. |