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