COMSTAR 33600 SVD modem/telephone/ISDN Settings and Configuration

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

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.