AM56HCFSP

AMQUEST CORPORATION

AM56HCFSP

Card Type	Modem
Chip Set	Unidentified
I/O Options	RJ-11 ports
Maximum Modem Rate	56Kbps
Maximum Fax Rate	33.6Kbps
Data Modulation Protocol	Bell 103A/212 ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34, K56flex, V.90
Fax Modulation Protocol	ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression	MNP10,MNP5, V.42, V.42bis, V.80
Fax Class	Unidentified
Data Bus	32-bit PCI
Card Size	Half-length, full-height card

CONNECTIONS
Function	Label	Function	Label
Line out	CN1	Speaker connector	CN3
Line in	CN2	Microphone connector	CN4

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/

A, E, H, L, M, O, P, Q, T, V, X

&F, &P, &V

Extended AT Commands

%L, %Q

S Registers

S0, S1, S2, S3, S4, S5, S6, S8, S10, S11, S12, S29

Note: See MHI Help File for full command documentation.

Proprietary AT Command Set

DATA TERMINAL READY (DTR)
Type:	Configuration
Format:	AT [cmds] &Dn [cmds]
Description:	Selects modem response to DTR
Command	Function
&D0	Modem does not respond to DTR
&D1	Modem goes to command mode on DTR toggle
&D2	Modem goes to command mode and disconnects (hangs up) on DTR toggle; Auto-Answer is disabled on low DTR.

DIAL
Type:	Immediate
Format:	AT [cmds] D<#> [cmds]
Description:	Dials telephone number 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
DT	Tone dialing enabled/Pulse dialing disabled
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.
D@	Wait for Quite 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$	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.
D&	Wait for prompt tone detection function enabled. Waits for prompt tone for amount of time specified by the S7 command.
D^	Toggles use of tone or pulse for the current dial attempt

GUARD TONE
Type:	Configuration
Format:	AT [cmds] &Gn [cmds]
Description:	Commands the modem to transmit a guard tone in V.22/V.22bis
Note:	Used primarily for international data transmission
Command	Function
&G0	Guard tone disabled
&G1	Guard tone disabled
&G2	1800Hz guard tone enabled

RECEIVED LINE SIGNAL DETECTOR CONTROL
Type:	Configuration
Format:	AT [cmds] &Cn [cmds]
Description:	Controls how the RLSD reacts to the detection of a received DTE/DTR signal
Command	Function
&C0	RLSD is always enabled
&C1	RLSD is enabled based on the state of the carrier

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays information requested
Command	Function
I0	Reports value of report 0 from product configuration file
I1	Reports value of report 1 from product configuration file
I2	Reports value of report 2 from product configuration file
I3	Reports value of report 3 from product configuration file
I4	Reports value of report 4 from product configuration file
I5	Reports value of report 5 from product configuration file
I6	Reports value of report 6 from product configuration file
I7	Reports value of report 7 from product configuration file

SOFT RESET
Type:	Immediate
Format:	AT [cmds] Z [cmds]
Description:	Restores modem profiles previously saved in non-volatile RAM.

STORE ACTIVE PROFILE
Type:	Configuration
Format:	AT [cmds] &W [cmds]
Description:	Writes the values for the active profile into the non-volatile RAM

Extended AT Command Set

AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD - LINE QUALITY MONITOR
Type:	Configuration
Format:	AT [cmds] %En [cmds]
Description:	Controls auto-retrain mode, fallback/fall-forward and line quality monitor
Command	Function
%E0	Line quality monitor, auto-retrain and auto-rate are disabled
%E1	Line quality monitor, auto-retrain and auto-rate are enabled

Special AT Command Set

16-BIT/32-BIT FRAME CHECK SEQUENCE CONTROL
Type:	Configuration
Format:	AT [cmds] +EFCS=n [cmds]
Description:	Controls the use of the 16-bit or 32-bit frame check option when in V.42 mode
Command	Function
n=0	Enables use of 16-bit frame check sequence

ACTIVE SERVICE CLASS SELECTION
Type:		Configuration
Format:		AT [cmds] +FCLASS=n [cmds]
Description:		Controls auto-retrain mode, fallback/fall-forward and line quality monitor
Command		Function
»	n=0	Enables data mode
	n=1	Enables facsimilie class 1.0 mode
	n=8	Enables voice mode
	n=80	Enables voiceview mode

BLACKLISTED NUMBERS REPORT
Type:	Immediate
Format:	AT [cmds] *B [cmds]
Description:	Reports the complete list of phone numbers on the DTE blacklist

BREAK HANDING SELECTION
Type:	Configuration
Format:	AT [cmds] +EB=x,y,z [cmds]
Description:	Controls break handling for V.42 operation
Command	Function
x=0	Break is ignored and not sent to remote DCE
y=0	V.42 L-signal does not indicate break signal
z=0	Break is not sent to DTE

COUNTRY CODE SELECTION
Type:	Configuration
Format:	AT [cmds] +GCI=n [cmds]
Range:	00h-FFh
Unit:	Hexadecimal
Description:	Selects the country of origin/installation for the modem
Note: Country codes are from Annex A of the ITU-T Recommendation T.35 documentation.

DATA BUFFER MANAGEMENT CONTROL
Type:	Configuration
Format:	AT [cmds] +ETBM=x,y,z [cmds]
Description:	Controls how the data in the buffer is handled upon termination
Command	Function
x=0	All data is cleared from transmit buffer when DTE requests call termination
y=0	All data is cleared from receive buffer when DTE requests call termination
z=0	Modem will not attempt to deliver data in buffer before adandoning the attempt and clearing the data from the buffer

DATA COMPRESSION CONTROL
Type:		Configuration
Format:		AT [cmds] +DS=x,y,z,a [cmds]
Description:		Controls settings on V.42bis data compression, if used
Command		Function
	x=0	Direction of data compression is negotiated
»	x=3	Data compression is enabled in both directions
	y=0	Overrides disconnect if V.42bis is not negotiated; modem will remain on-hook
	z=0 to 2048	Selects the maximum number of dictionary entries to be negotiated
	a=0 to 32	Selects the maximum string length to be negotiated

DATA COMPRESSION REPORTING CONTROL
Type:		Configuration
Format:		AT [cmds] +DR=n [cmds]
Description:		Controls whether or not data compression information is reported to the DTE
Command		Function
	n=0	Disable data compression reporting
»	n=1	Enable data compression reporting

DELAYED NUMBERS REPORT
Type:	Immediate
Format:	AT [cmds] *D [cmds]
Description:	Reports the complete list of delayed numbers and amount of delay

DSVD SELECTION
Type:	Configuration
Format:	AT [cmds] -SSE=n [cmds]
Description:	Controls DSVD mode
Command	Function
n=0	Disable DSVD mode
n=1	Enable DSVD mode

DTE FLOW CONTROL SELECTION
Type:		Configuration
Format:		AT [cmds] +IFC=x,y [cmds]
Description:		Controls flow control between modem and DTE while in V.42 mode, or fallback to non-error control mode
Command		Function
	x=0	Disables DTE flow control on received data
	x=1	Enables software flow control (XON/XOFF), does not pass signal to remote modem
»	x=2	Enables circuit 133 - ready for receiving
	x=3	Enables software flow control (XON/XOFF), passes signal to remote modem
	y=0	Disables DTE flow control on transmitted data
	y=1	Enables software flow control (XON/XOFF)
»	y=2	Enables hardware flow control (CTS/RTS)

DTE LOCAL RATE REPORTING SELECTION
Type:	Configuration
Format:	AT [cmds] +ILRR=n [cmds]
Description:	Control whether or not extended format text is reported to the DTE
Command	Function
n=0	Disables reporting of local port rate
n=1	Enables reported of local port rate

ERROR CONTROL AND SYNCHRONOUS MODE SELECTION
Type:		Configuration
Format:		AT [cmds] +ES=x,y,z [cmds]
Description:		Controls operation mode when originator, and fallback mode when originator or answerer
Command		Function
	x=1	Enables request for normal mode when initiating call
	x=2	Enables request for V.42 without detection phase, or if V.8 is used, disable V.42 request when initiating call
»	x=3	Enables request for V.42 with detection phase when initiating call
	x=4	Enables request for MNP mode when initiating call
	x=6	Enables reuqest V.80 synchronous access mode and data state is entered when intiating call
»	y=0	Requests optional LAPM, MNP or normal mode when initiating call
	y=2	Requires LAPM, MNP or normal mode error correction mode when initiating call, otherwise disconnect
	y=3	Requires LAPM mode when initiating call, otherwise disconnect
	y=4	Requires MNP mode when initiating call, otherwise disconnect
	z=1	Disables error control when answering calls, uses normal mode
»	z=2	Enables LAPM, MNP or normal mode while answering calls
	z=4	Requires LAPM or MNP mode while answering calls, otherwise disconnect
	z=5	Requires LAPM mode while answering calls, otherwise disconnect
	z=6	Requires MNP mode while answering calls, otherwise disconnect
	z=8	Enables V.80 synchronous access mode and data state is entered whild answering calls

ERROR CONTROL REPORTING
Type:		Configuration
Format:		AT [cmds] +ER=n [cmds]
Description:		Controls whether or not result codes for error control are reported to the DTE
Command		Function
	n=0	Disables reporting of error control result codes
»	n=1	Enables reporting of error control result codes

MODULATION REPORTING CONTROL
Type:		Configuration
Format:		AT [cmds] +MR=n [cmds]
Description:		Controls whether or not +MCR and +MRR result codes are transmitted to the DTE
Command		Function
	n=0	Disables transmission of modulation information
»	n=1	Enables transmission of modulation information

MODULATION SELECTION
Type:	Configuration
Format:	AT [cmds] +MS=x,y,z,a,b,c [cmds]
Description:	Sets options for active protocol; the transfer rates specified by z, a, b and c must be valid for the protocol selected.
Command	Function
x=V21	V.21
x=V22	V.22
x=V22B	V.22bis
x=V23C	V.23
x=V32	V.32
x=V32B	V.32bis
x=V34	V.34
x=B103	Bell 103
x=B212	Bell 212A
x=K56FLEX	K56flex
y=0	Automode disabled
y=1	Auto-detect highest speed enabled
z, a=75	Set minimum or maximum transfer rate at 75bps, respectively.
z, a=300	Set minimum or maximum transfer rate at 300bps, respectively.
z, a=1200	Set minimum or maximum transfer rate at 1200bps, respectively.
z, a=2400	Set minimum or maximum transfer rate at 2400bps, respectively.
z, a=4800	Set minimum or maximum transfer rate at 4800bps, respectively.
z, a=7200	Set minimum or maximum transfer rate at 7200bps, respectively.
z, a=9600	Set minimum or maximum transfer rate at 9600bps, respectively.
z, a=12000	Set minimum or maximum transfer rate at 12000bps, respectively.
z, a=14400	Set minimum or maximum transfer rate at 14400bps, respectively.
z, a=16800	Set minimum or maximum transfer rate at 16800bps, respectively.
z, a=19200	Set minimum or maximum transfer rate at 19200bps, respectively.
z, a=21600	Set minimum or maximum transfer rate at 21600bps, respectively.
z, a=24000	Set minimum or maximum transfer rate at 24000bps, respectively.
z, a=26400	Set minimum or maximum transfer rate at 26400bps, respectively.
z, a=28800	Set minimum or maximum transfer rate at 28800bps, respectively.
z, a=31200	Set minimum or maximum transfer rate at 31200bps, respectively.
z, a=33600	Set minimum or maximum transfer rate at 33600bps, respectively.
z, a=32000	Set minimum or maximum transfer rate at 32000bps, respectively.
z, a=34000	Set minimum or maximum transfer rate at 34000bps, respectively.
z, a=36000	Set minimum or maximum transfer rate at 36000bps, respectively.
z, a=38000	Set minimum or maximum transfer rate at 38000bps, respectively.
z, a=40000	Set minimum or maximum transfer rate at 40000bps, respectively.
z, a=42000	Set minimum or maximum transfer rate at 42000bps, respectively.
z, a=44000	Set minimum or maximum transfer rate at 44000bps, respectively.
z, a=46000	Set minimum or maximum transfer rate at 46000bps, respectively.
z, a=48000	Set minimum or maximum transfer rate at 48000bps, respectively.
z, a=50000	Set minimum or maximum transfer rate at 50000bps, respectively.
z, a=52000	Set minimum or maximum transfer rate at 52000bps, respectively.
z, a=54000	Set minimum or maximum transfer rate at 54000bps, respectively.
z, a=56000	Set minimum or maximum transfer rate at 56000bps, respectively.
b, c=75	Set minimum or maximum receive rate at 75bps, respectively
b, c=300	Set minimum or maximum receive rate at 300bps, respectively
b, c=600	Set minimum or maximum receive rate at 600bps, respectively
b, c=1200	Set minimum or maximum receive rate at 1200bps, respectively
b, c=2400	Set minimum or maximum receive rate at 2400bps, respectively
b, c=4800	Set minimum or maximum receive rate at 4800bps, respectively
b, c=7200	Set minimum or maximum receive rate at 7200bps, respectively
b, c=9600	Set minimum or maximum receive rate at 9600bps, respectively
b, c=12000	Set minimum or maximum receive rate at 12000bps, respectively
b, c=14400	Set minimum or maximum receive rate at 14400bps, respectively
b, c=16800	Set minimum or maximum receive rate at 16800bps, respectively

MODULATION SELECTION (con't)
b, c=19200	Set minimum or maximum receive rate at 19200bps, respectively
b, c=21600	Set minimum or maximum receive rate at 21600bps, respectively
b, c=24000	Set minimum or maximum receive rate at 24000bps, respectively
b, c=26400	Set minimum or maximum receive rate at 26400bps, respectively
b, c=28800	Set minimum or maximum receive rate at 28800bps, respectively
b, c=31200	Set minimum or maximum receive rate at 31200bps, respectively
b, c=33600	Set minimum or maximum receive rate at 33600bps, respectively
b, c=32000	Set minimum or maximum receive rate at 32000bps, respectively
b, c=34000	Set minimum or maximum receive rate at 34000bps, respectively
b, c=36000	Set minimum or maximum receive rate at 36000bps, respectively
b, c=38000	Set minimum or maximum receive rate at 38000bps, respectively
b, c=40000	Set minimum or maximum receive rate at 40000bps, respectively
b, c=42000	Set minimum or maximum receive rate at 42000bps, respectively
b, c=44000	Set minimum or maximum receive rate at 44000bps, respectively
b, c=46000	Set minimum or maximum receive rate at 46000bps, respectively
b, c=48000	Set minimum or maximum receive rate at 48000bps, respectively
b, c=50000	Set minimum or maximum receive rate at 50000bps, respectively
b, c=52000	Set minimum or maximum receive rate at 52000bps, respectively
b, c=54000	Set minimum or maximum receive rate at 54000bps, respectively
b, c=56000	Set minimum or maximum receive rate at 56000bps, respectively

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] +GCAP [cmds]
Description:	Reports modem's current extended format command set

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] +GOI [cmds]
Description:	Reports modem global object identifier settings

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] +GMN [cmds]
Description:	Reports modem product serial number

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] +GMR [cmds]
Description:	Reports modem version and revision information

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] +GMM [cmds]
Description:	Reports modem product model number

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] +GMI [cmds]
Description:	Reports modem product manufacturer information

SELECTIVE REPEAT SELECTION
Type:	Configuration
Format:	AT [cmds] +ESR=n [cmds]
Description:	Controls the use of the selective repeat option when in V.42 mode
Command	Function
n=0	Disables use of selective repeat

SYNCHRONOUS ACCESS MODE CONTROL
Type:	Configuration
Format:	AT [cmds] +ESA=x,y,z,a,b,c,d,e [cmds]
Description:	Selects settings for V.8 and V.8bis operation
Command	Function
x=0	Factory configured - do not alter
y=6	Factory configured - do not alter
z=0	Modem transmits abort on underrun of transmit data buffer
z=1	Modem transmits flag on underrun of transmit data buffer; reports underrun and overrun of buffer to DTE
a=0	Factory configured - do not alter
b=0	Disable CRC generation and checking
b=1	Enable 16-bit V.42 CRC generation and checking when in Framed sub-Mode
b=2	Enable 32-bit V.42 CRC generation and checking when in Framed sub-Mode
c=0	Factory configured - do not alter
d=255	Set to hexadecimal octet value FFh, used to perform character-oriented framing
e=0	Factory configured - do not alter

TRANSMIT FLOW CONTROL THRESHOLDS SELECTION
Type:	Configuration
Format:	AT [cmds] +ITF=x,y,z [cmds]
Description:	Controls input buffer size, thresholds for flow control and report rate to the DTE
Command	Function
x=20 to 7000	Sets the upper threshold at which the modem sends flow off signal
y=10 to 5000	Sets the lower threshold at which the modem sends flow on signal
z=0	Factory configured - do not alter
Note: An ERROR will be reported is if the value of x is set below the value of y.

V.8 and V8BIS OPERATION CONTROL
Type:		Configuration
Format:		AT [cmds] +A8E=x,y,z,a,b,c [cmds]
Description:		Selects settings for V.8 and V.8bis operation
Command		Function
»	x=1	Enable DCE controlled V.8 mode without +A8x indicators, during origination
	x=6	Enable DCE controlled V.8 mode with +A8x indicators, during origination
»	y=1	Enable DCE controlled V.8 mode without +A8x indicators, during answer
	y=5	Enable DCE controlled V.8 mode with +A8x indicators, during answer
	z=0 to 255	Selects value of the CI signal call function
»	a=0	Disable V.8bis mode
	a=1	Enable DCE controlled V.8bis mode
	a=2	Enable DTE controlled V.8bis mode
	b=<string>	Not supported
	c=<string>	Not supported

V.8 MENU SIGNALS CONTROL
Type:	Configuration
Format:	AT [cmds] +A8M=n [cmds]
Range:	0-255
Unit:	ASCII
Description:	Selects the coded string used when sending CM or JM signals in V.8 mode

V.8BIS SIGNAL AND MESSAGE CONTROL
Type:	Configuration
Format:	AT [cmds] +A8T=x,y,z,a,b,c [cmds]
Description:	Selects and controls signals and messages to be sent during V.8bis operation
Command	Function
x=0	V.8bis signal set to none
x=1	V.8bis signal set to initiating MRe
x=2	V.8bis signal set to initiating MRd
x=3	V.8bis signal set to initiating CRe, low power
x=4	V.8bis signal set to initiating CRe, high power
x=5	V.8bis signal set to initiating CRd
x=6	V.8bis signal set to initiating ESi
x=7	V.8bis signal set to responding MRd, low power
x=8	V.8bis signal set to responding MRd, high power
x=9	V.8bis signal set to responding CRd
x=10	V.8bis signal set to responding ESr
y=0 to 255	Selects first V.8bis message coded string
z=0 to 255	Selects second V.8bis message coded string
a=0	Enables initiating signals detection
a=1	Enables responding signals detection
a=2	Enables initiating and responding signals detection
b=0	Disable detection of V.8bis messages
b=1	Search for V.8bis messages enabled
c=0	Disables any delay between V.8bis messages
c=1	Enables 1.5 second delay between every V.8bis message

VIDEO READY MODE SELECTION
Type:	Configuration
Format:	AT [cmds] +Hn [cmds]
Description:	Selects the video ready mode
Command	Function
+H0	Disables video ready mode
+H1	Enables video ready mode

Voice Command Set

ANALOG SOURCE/DESTINANTION SELELCTION
Type:	Configuration
Format:	AT [cmds] +VLS=n [cmds]
Description:	Controls the source and destination of the analog data
Command	Function
n=0	Modem on hook, phone set connected to line
n=1	Modem connected to line
n=2	Modem connected to phone handset
n=3	Modem connected to both line and phone handset
n=4	Modem connected to PC speaker
n=5	Modem connected to both line and PC speaker
n=6	Modem connected to microphone
n=7	PC speaker and microphone connected to line via the modem
n=8	Modem connected to PC speaker
n=9	Modem connected to both line and PC speaker
n=10	PC speaker and microphone connected to line via the modem
n=11	Modem connected to microphone
n=12	PC speaker and microphone connected to line via the modem
n=13	PC speaker and microphone connected to line via the modem
n=14	Modem connected to phone handset
n=15	PC speaker and microphone connected to line via the modem
n=16	Enable mute on microphone
n=17	Disable microphone
n=18	Enable mute on PC speaker
n=19	Disable PC speaker

AUTOMATIC HANG-UP CONTROL
Type:	Configuration
Format:	AT [cmds] +VNH=n [cmds]
Description:	Controls settings for automatic hangups
Command	Function
n=0	Enables automatic hang-up as normal for other modes
n=1	Disables automatic hang-up as found in non-voice modes
n=2	Disables automatic hang-up; enables "logical" hang-up

BEEP TONE TIMER
Type:	Configuration
Format:	AT [cmds] +VTD=n [cmds]
Range:	1-500
Unit:	0.01 seconds
Description:	Controls the duration of DTMF/tone generation

BUFFER THESHOLD REPORT
Type:	Immediate
Format:	AT [cmds] +VBT=? [cmds]
Description:	Reports information about the <deassert> and <assert> parameters
Note: Setting of these values is not supported.

CALLER ID
Type:		Configuration
Format:		AT [cmds] +VCID=n [cmds]
Description:		Controls Caller ID mode
Command		Function
»	n=0	Disable Caller ID mode
	n=1	Enable Caller ID mode

COMPRESSION METHOD SELECTION
Type:	Configuration
Format:	AT [cmds] +VSM=x,y,z,a [cmds]
Description:	Selects voice compression, silence compression and voice sampling rate modes
Command	Function
x=0	Factory configured - do not alter
y=*	Selects range of voice samples per second
z=*	Selects range of sensitivity settings for voice receives
a=*	Selects range of expansion values for voice transmits
*Note: The range of defined values for y, z and a is not indicated

DID SELECTION
Type:	Configuration
Format:	AT [cmds] +VDID=x,y [cmds]
Description:	Selects whether modem connects via a single DID line or multiple phone numbers
Command	Function
x=0	Factory configured - do not alter
y=0	Factory contigured - do not alter

DISTINCTIVE RING
Type:	Configuration
Format:	AT [cmds] +VDR=x,y [cmds]
Description:	Selects ring cadence mode and timing
Command	Function
x=0	Disables report of ring cadence information
x=1	Enables report of ring cadence information as definded by parameter y
y=0	Modem will report only DROF and DRON. Reports all other call progress event codes as normal
y=0-10	Modem reports DROF and DRON messages, then produces a ring event y/10 seconds after the end for the ring pulse

DTE/MODEM INTERFACE RATE REPORT
Type:	Immediate
Format:	AT [cmds] +VPR=? [cmds]
Description:	Not supported

MICROPHONE GAIN
Type:	Configuration
Format:	AT [cmds] +VGM=n [cmds]
Range:	0-255
Unit:	Decimal
Description:	Controls the gain settings for the microphone

MODEM RECEIVE
Type:	Immediate
Format:	AT [cmds] +VRXn [cmds]
Description:	Selects mode for recording voice reception
Command	Function
+VRX0	Starts recording voice reception without a periodic tone
+VRX1	Starts recording voice reception with a periodic tone

MODEM TRANSMIT
Type:	Immediate
Format:	AT [cmds] +VTX [cmds]
Description:	Starts the modem voice transmission process

PLAYBACK VOLUME CONTROL
Type:	Configuration
Format:	AT [cmds] +VGT=n [cmds]
Range:	0-255
Unit:	Decimal
Description:	Selects the volume for voice transmission playback

RINGBACK TIMER CONTROL
Type:	Configuration
Format:	AT [cmds] +VRN=n [cmds]
Range:	0-600
Unit:	0.1 second
Description:	Selects the length of time modem will wait after ringback to consider the remote station as off-hook
Note: A value of 0 disables the timer

SILENCE DETECTION CONTROL
Type:	Configuration
Format:	AT [cmds] +VSD=x,y [cmds]
Description:	Controls time period and silence detection to determine when end of voice receive has occurred
Command	Function
x=0	Enables +VSM or proprietary silence compression mode
x=127	Enables less aggressive silence detection mode
x=128	Enables nominal silence detection mode
x=129	Enables more agressive silence detection mode
y=1-255	Select amount of time before modem can report silence detect. Unit: 0.1 seconds

SPEAKER GAIN
Type:	Configuration
Format:	AT [cmds] +VGS=n [cmds]
Range:	0-255
Unit:	Decimal
Description:	Controls the gain settings for the speaker

SPEAKERPHONE CONTROL
Type:	Configuration
Format:	AT [cmds] +VSP=n [cmds]
Description:	Controls speakerphone functions
Command	Function
n=0	Disables speakerphone mode
n=1	Enables speakerphone mode

SPEAKERPHONE DUPLEX CONTROL
Type:	Configuration
Format:	AT [cmds] +VDX=n [cmds]
Description:	Controls duplex mode for speakerphone
Command	Function
n=0	Enables half-duplex mode
n=1	Enables full-duplex mode

TONE CADENCE CONTROL
Type:	Configuration
Format:	AT [cmds] +VDT=x,y [cmds]
Description:	Selects mode for reporting tone cadence
Command	Function
x=0	Disables report of any tone cadence information
x=1	Enables report of tone cadence information as definded by parameter y
y=0	Modem will report only CPOF and CPON. Reports all other call progress event codes as normal
y=0	Factory configured - do not alter

VOICE GAIN RECEIVE
Type:	Configuration
Format:	AT [cmds] +VGR=n [cmds]
Range:	0-255
Unit:	Decimal
Description:	Selects the gain on the received voice signal

VOICE INACTIVITY TIMER
Type:	Configuration
Format:	AT [cmds] +VIT=n [cmds]
Range:	0-255
Unit:	0.1 second
Description:	Selects the period for the inactivity timer
Note: A value of 0 disables the timer.

VOICE INITIALIZE
Type:	Configuration
Format:	AT [cmds] +VIPn [cmds]
Description:	Resets all voice command parameters to the default values
Command	Function
+VIP0	Resets all voice command parameters to the default values

VOICE TONES
Type:	Configuration
Format:	AT [cmds] +VTS=n [cmds]
Description:	Controls sending of DTMF tones, single and double frequency tones
Note: This command is not supported.

S(status) Registers

NO CARRIER TIME-OUT
Type:	Register
Format	AT [cmds] S7=n [cmds]
Range:	1-255
Unit:	1 second
Description:	Maximum wait time the modem uses after dialing to detect a carrier signal from the remote modem for both originating and answering calls.
Note: W dial modifier also uses S7 to set the maximum time to wait.