V.34SV

SIMA TECHNOLOGY CO., LTD.

V.34SV

Card Type

Modem (synchronous/asynchronous)

Chip Set

Unidentified

I/O Options

Voice, speaker out, microphone in

Maximum Data Rate

33.6Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

Serial

Fax Class

Class I & II

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

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Function

Label

Function

Label

Line out

CN1

RS-232/422

CN5

Line in

CN2

DC power

CN6

Speaker out

CN3

Power switch

SW1

Microphone in

CN4

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

MR

Red

On

Power is on

MR

Red

Blinking

Modem is in test mode

MR

Red

Off

Power is off

HS

Red

On

Modem is operating at 4800bps or faster

HS

Red

Off

Modem is operating at slower than 4800bps

AA

Red

On

Auto-answer enabled

AA

Red

Off

Auto-answer disabled

AA

Red

Blinking

Phone is ringing

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

SD

Red

On

Modem is transmitting data

SD

Red

Off

Modem is not transmitting data

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

TR

Red

On

DTR signal is high

TR

Red

Off

DTR signal is low

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, ‘comma’, A/

A, B, D, E, H, L, M, N, O, P, Q, T, V, W, X, Y, Z

&C, &D, &F, &G, &K, &M, &P, &Q, &R, &S, &T, &V, &W, &X, &Y, &Z

Extended AT Commands

\A, \B, \G, \K, \L, \N, \W

%C, %F, %L, %Q, %T

Special AT Commands

#CID, :E, *H, -K, )M, @M, +MS, -Q

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S14, S16, S18, S21, S22, S23, S24, S25, S27, S29

S30, S31, S32, S33, S36, S38, S39, S40, S46, S48, S86, S91, S92, S95, S201

Note: See MHI documentation for complete information.

Proprietary AT Command Set

AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Controls auto-retrain, auto-fall-back/fall-forward, and the line quality monitor.

Command

Function

í %E0

Line quality monitor and auto-retrain disabled.

%E1

Line quality monitor and auto-retrain enabled.

%E2

Line quality monitor and auto-fallback/fall-forward enabled.

%E3

Line quality monitor, auto-retrain, and fast hangup enabled.

AUTOSYNC

Format

AT [cmds] S19=n [cmds]

Default:

0

Range:

0 - 31

Unit:

Bit-mapped

Description:

Sets options for Hayes AutoSync functions.

Bit

Value

Function

0

0

Not used.

1

í 0

1

BSC enabled.

HDLC enabled.

2

í 0

1

HDLC address detection disabled.

HDLC address detection enabled.

3

í 0

1

NRZI bit encoding enabled.

NRZ bit encoding enabled.

4

í 0

1

Mark idle enabled.

Flag or sync idle enabled.

BIT-MAPPED REGISTER S28

Format

AT [cmds] S28=n [cmds]

Default:

0

Range:

0 - 154

Description:

Controls V.23 split speed mode, pulse dialing ratio, and MNP10 cellular link negotiation speed.

Bit

Value

Function

0

0

Not used

1

í 0

1

75bps transmit, 1200bps receive enabled

1200bps transmit, 75bps receive enabled

2

0

Not used

4, 3

í 00

01

10

11

39ms make/61ms break at 10pps

33ms make/67ms break at 10pps

39ms make/61ms break at 20pps

33ms make/67ms break at 20pps

5

0

Not used

7, 6

í 00

01

10

MNP10 link will be negotiated at highest possible speed.

MNP10 link will be negotiated at 1200bps.

MNP10 link will be negotiated at 4800bps.

BIT-MAPPED REGISTER S41

Format

AT [cmds] S41=n [cmds]

Default:

131

Range:

0 - 219

Description:

Controls compression type, auto-retrain and fall-back/fall-forward, flow control, and MNP mode.

Note:

Be aware that bit 6 is out of order.

Bit

Value

Function

1, 0

00

01

10

í 11

Data compression disabled.

MNP5 enabled.

V.42bis enabled.

MNP5 and V.42bis enabled.

6, 2

í 00

01

10

Auto-retrain disabled.

Auto-retrain enabled.

Fall-back/fall-forward enabled.

3

í 0

1

Flow control disabled.

Flow control enabled.

4

í 0

1

Stream mode for MNP.

Block mode for MNP.

5

0

Not used.

7

0

í 1

Fall-back to V.22bis and V.22 disabled.

Fall-back to V.22bis and V.22 enabled.

COUNTRY CODE

Type:

Configuration

Format:

AT [cmds] *NCnn [cmds]

Description:

Sets the country code for the modem.

DISPLAY CONFIGURATION AND STATISTICS

Type:

Immediate

Format:

AT [cmds] \S [cmds]

Description:

Displays the settings of all commands and statistics about the current connection.

DISPLAY DELAYED NUMBERS

Type:

Immediate

Format:

AT [cmds] *Dn [cmds]

Description:

Displays all numbers on the delayed list.

DISPLAY FORBIDDEN NUMBERS

Type:

Immediate

Format:

AT [cmds] *Bn [cmds]

Description:

Displays all numbers on the forbidden list.

DISPLAY MANUFACTURER

Type:

Immediate

Format:

AT [cmds] #MFR? [cmds]

Description:

Displays the 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.

HDLC ADDRESS

Type:

Register

Format:

AT [cmds] S20=n [cmds]

Default:

0

Range:

0-255

Unit:

1 ASCII character

Description:

Sets the HDLC address and BSC character.

LINE SPEED

Type:

Configuration

Format

AT [cmds] Fn [cmds]

Description:

Sets the desired line connection speed.

Command

Function

í F0

Auto-detect connect speed.

F1

Connect at 300bps with V.21 or Bell 103.

F3

Connect at 1200/75bps with V.23.

F4

Connect at 1200bps with V.22 or Bell 212A.

F5

Connect at 2400bps with V.22bis.

F6

Connect at 4800bps with V.32 or V.32bis.

F7

Connect at 7200bps with V.32.

F8

Connect at 9600bps with V.32 or V.32bis.

F9

Connect at 12Kbps with V.32bis.

F10

Connect at 14.4Kbps with V.32bis.

F13

Connect at 14.4Kbps with V.FC.

F14

Connect at 16.8Kbps with V.FC.

F15

Connect at 19.2Kbps with V.FC.

F16

Connect at 21.6Kbps with V.FC.

F17

Connect at 24.4Kbps with V.FC.

F18

Connect at 26.4Kbps with V.FC.

F19

Connect at 28.8Kbps with V.FC.

LINE SPEED

Type:

Register

Format

AT [cmds] S37=n [cmds]

Description:

Sets the desired line connection speed.

Command

Function

í S37=0

Auto-detect connect speed.

S37=1

Connect at 75bps.

S37=2

Connect at 110bps.

S37=3

Connect at 300bps.

S37=4

Connect at 600bps.

S37=5

Connect at 1200bps with V.22.

S37=6

Connect at 2400bps with V.22bis.

S37=7

Connect at 1200/75bps with V.23.

S37=8

Connect at 4800bps with V.32 or V.32bis.

S37=9

Connect at 9600bps with V.32 or V.32bis.

S37=10

Connect at 12Kbps with V.32bis.

S37=11

Connect at 14.4Kbps with V.32bis.

S37=12

Connect at 7200bps with V.32bis.

S37=15

Connect at 14.4Kbps with V.FC.

LINE SPEED (CON’T)

Command

Function

S37=16

Connect at 16.8Kbps with V.FC.

S37=17

Connect at 19.2Kbps with V.FC.

S37=18

Connect at 21.6Kbps with V.FC.

S37=19

Connect at 24.4Kbps with V.FC.

S37=20

Connect at 26.4Kbps with V.FC.

S37=21

Connect at 28.8Kbps with V.FC.

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=2

Modem will operate in fax class II mode.

#CLS=8

Modem will operate in voice mode.

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.

Note:

The z and a parameters specify the minimum and maximum originate mode connect speeds, respectively; the b and c parameters specify the minimum and maximum answer mode connect speeds, respectively.

Command

Function

x=0

Use V.21 modulation.

x=1

Use V.22 modulation.

x=2

Use V.22bis modulation.

x=3

Use V.23 modulation.

x=9

Use V.32 modulation.

x=10

Use V.32bis modulation.

í x=11

Use V.34 modulation.

x=64

Use Bell 103 modulation.

x=69

Use Bell 212A modulation.

x=74

Use V.FC modulation.

y=0

Automode disabled.

í y=1

Auto-detect highest speed enabled without V.8 (except V.34 which always uses V.8).

y=2

Auto-detect highest speed enabled with V.8.

MODULATION SELECTION (CON’T)

Command

Function

z, a, b, c=300

Set minimum or maximum connection speed at 300bps.

z, a, b, c=1200

Set minimum or maximum connection speed at 1200bps.

z, a, b, c=2400

Set minimum or maximum connection speed at 2400bps.

z, a, b, c=4800

Set minimum or maximum connection speed at 4800bps.

z, a, b, c=7200

Set minimum or maximum connection speed at 7200bps.

z, a, b, c=9600

Set minimum or maximum connection speed at 9600bps.

z, a, b, c=12000

Set minimum or maximum connection speed at 12Kbps.

z, a, b, c=14400

Set minimum or maximum connection speed at 14.4Kbps.

z, a, b, c=16800

Set minimum or maximum connection speed at 16.8Kbps.

z, a, b, c=19200

Set minimum or maximum connection speed at 19.2Kbps.

z, a, b, c=21600

Set minimum or maximum connection speed at 21.6Kbps.

z, a, b, c=24000

Set minimum or maximum connection speed at 24Kbps.

z, a, b, c=26400

Set minimum or maximum connection speed at 26.4Kbps.

z, a, b, c=28800

Set minimum or maximum connection speed at 28.8Kbps.

PULSE DIALING MODE

Type:

Configuration

Format:

AT [cmds] *Zn [cmds]

Description:

Sets the number of pulses per digit dialed while in pulse mode.

Command

Function

í *Z0

Number of pulses generated is equal to the dialed digit value (0 digit generates 10 pulses).

*Z1

Number of pulses generated is equal to the dialed digit value plus one (0 digit generates 1 pulse).

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays requested information about the modem.

Command

Function

I0

Reports product identification code.

I1

Reports ROM checksum.

I2

Tests and reports ROM checksum.

I3

Reports firmware version and interface type.

I4

Reports OEM response.

I5

Reports country code.

I6

Reports data pump model and version.

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, #, *; 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.

VOICE BUFFER SPACE

Type:

Configuration

Format:

AT [cmds] #VSK=n [cmds]

Default:

255

Range:

0 - 255

Unit:

1 byte

Description:

Sets the amount of free space there must be in the transmit buffer before the XON signal is sent.

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=3

External microphone only used for voice I/O.

#VLS=4

Telephone line and handset used for voice I/O; internal speaker enabled.

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]

Description:

Sets the speed of the local serial port.

Command

Function

#BDR=1

Set speed to 2400bps.

#BDR=2

Set speed to 4800bps.

#BDR=4

Set speed to 9600bps.

#BDR=6

Set speed to 14.4Kbps.

#BDR=8

Set speed to 19.2Kbps.

#BDR=16

Set speed to 38.4Kbps.

#BDR=24

Set speed to 57.6Kbps.

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:

Unidentified

Unit:

Unidentified

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=3

Modem records 3 bits per sample in ADPCM encoding.

í #VBS=4

Modem records 4 bits per sample in ADPCM 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 attempt to recognize periods of silence when receiving a voice signal.

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:

Unidentified

Range:

Unidentified

Unit:

Unidentified

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 TRANSMIT

Type:

Immediate

Format:

AT [cmds] #VTX

Description:

Commands the modem to begin transmitting voice data.

Card Type	Modem (synchronous/asynchronous)
Chip Set	Unidentified
I/O Options	Voice, speaker out, microphone in
Maximum Data Rate	33.6Kbps
Maximum Fax Rate	14.4Kbps
Data Bus	Serial
Fax Class	Class I & II
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
Error Correction/Compression	MNP5, V.42, V.42bis

CONNECTIONS
Function	Label		Function		Label
Line out		CN1		RS-232/422		CN5
Line in		CN2		DC power		CN6
Speaker out		CN3		Power switch		SW1
Microphone in		CN4

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
MR	Red	On	Power is on
MR	Red	Blinking	Modem is in test mode
MR	Red	Off	Power is off
HS	Red	On	Modem is operating at 4800bps or faster
HS	Red	Off	Modem is operating at slower than 4800bps
AA	Red	On	Auto-answer enabled
AA	Red	Off	Auto-answer disabled
AA	Red	Blinking	Phone is ringing
CD	Red	On	Carrier signal detected
CD	Red	Off	Carrier signal not detected
OH	Red	On	Modem is off-hook
OH	Red	Off	Modem is on-hook
SD	Red	On	Modem is transmitting data
SD	Red	Off	Modem is not transmitting data
RD	Red	On	Modem is receiving data
RD	Red	Off	Modem is not receiving data
TR	Red	On	DTR signal is high
TR	Red	Off	DTR signal is low

AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD
Type:	Configuration
Format:	AT [cmds] %En [cmds]
Description:	Controls auto-retrain, auto-fall-back/fall-forward, and the line quality monitor.
Command	Function
í %E0	Line quality monitor and auto-retrain disabled.
%E1	Line quality monitor and auto-retrain enabled.
%E2	Line quality monitor and auto-fallback/fall-forward enabled.
%E3	Line quality monitor, auto-retrain, and fast hangup enabled.

AUTOSYNC
Format		AT [cmds] S19=n [cmds]
Default:		0
Range:		0 - 31
Unit:		Bit-mapped
Description:		Sets options for Hayes AutoSync functions.
Bit	Value	Function
0	0	Not used.
1	í 0 1	BSC enabled. HDLC enabled.
2	í 0 1	HDLC address detection disabled. HDLC address detection enabled.
3	í 0 1	NRZI bit encoding enabled. NRZ bit encoding enabled.
4	í 0 1	Mark idle enabled. Flag or sync idle enabled.

BIT-MAPPED REGISTER S28
Format		AT [cmds] S28=n [cmds]
Default:		0
Range:		0 - 154
Description:		Controls V.23 split speed mode, pulse dialing ratio, and MNP10 cellular link negotiation speed.
Bit	Value	Function
0	0	Not used
1	í 0 1	75bps transmit, 1200bps receive enabled 1200bps transmit, 75bps receive enabled
2	0	Not used
4, 3	í 00 01 10 11	39ms make/61ms break at 10pps 33ms make/67ms break at 10pps 39ms make/61ms break at 20pps 33ms make/67ms break at 20pps
5	0	Not used
7, 6	í 00 01 10	MNP10 link will be negotiated at highest possible speed. MNP10 link will be negotiated at 1200bps. MNP10 link will be negotiated at 4800bps.

BIT-MAPPED REGISTER S41
Format		AT [cmds] S41=n [cmds]
Default:		131
Range:		0 - 219
Description:		Controls compression type, auto-retrain and fall-back/fall-forward, flow control, and MNP mode.
Note:		Be aware that bit 6 is out of order.
Bit	Value	Function
1, 0	00 01 10 í 11	Data compression disabled. MNP5 enabled. V.42bis enabled. MNP5 and V.42bis enabled.
6, 2	í 00 01 10	Auto-retrain disabled. Auto-retrain enabled. Fall-back/fall-forward enabled.
3	í 0 1	Flow control disabled. Flow control enabled.
4	í 0 1	Stream mode for MNP. Block mode for MNP.
5	0	Not used.
7	0 í 1	Fall-back to V.22bis and V.22 disabled. Fall-back to V.22bis and V.22 enabled.

COUNTRY CODE
Type:	Configuration
Format:	AT [cmds] *NCnn [cmds]
Description:	Sets the country code for the modem.

DISPLAY CONFIGURATION AND STATISTICS
Type:	Immediate
Format:	AT [cmds] \S [cmds]
Description:	Displays the settings of all commands and statistics about the current connection.

DISPLAY DELAYED NUMBERS
Type:	Immediate
Format:	AT [cmds] *Dn [cmds]
Description:	Displays all numbers on the delayed list.

DISPLAY FORBIDDEN NUMBERS
Type:	Immediate
Format:	AT [cmds] *Bn [cmds]
Description:	Displays all numbers on the forbidden list.

DISPLAY MANUFACTURER
Type:	Immediate
Format:	AT [cmds] #MFR? [cmds]
Description:	Displays the 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.

HDLC ADDRESS
Type:	Register
Format:	AT [cmds] S20=n [cmds]
Default:	0
Range:	0-255
Unit:	1 ASCII character
Description:	Sets the HDLC address and BSC character.

LINE SPEED
Type:	Configuration
Format	AT [cmds] Fn [cmds]
Description:	Sets the desired line connection speed.
Command	Function
í F0	Auto-detect connect speed.
F1	Connect at 300bps with V.21 or Bell 103.
F3	Connect at 1200/75bps with V.23.
F4	Connect at 1200bps with V.22 or Bell 212A.
F5	Connect at 2400bps with V.22bis.
F6	Connect at 4800bps with V.32 or V.32bis.
F7	Connect at 7200bps with V.32.
F8	Connect at 9600bps with V.32 or V.32bis.
F9	Connect at 12Kbps with V.32bis.
F10	Connect at 14.4Kbps with V.32bis.
F13	Connect at 14.4Kbps with V.FC.
F14	Connect at 16.8Kbps with V.FC.
F15	Connect at 19.2Kbps with V.FC.
F16	Connect at 21.6Kbps with V.FC.
F17	Connect at 24.4Kbps with V.FC.
F18	Connect at 26.4Kbps with V.FC.
F19	Connect at 28.8Kbps with V.FC.

LINE SPEED (CON’T)
Command	Function
S37=16	Connect at 16.8Kbps with V.FC.
S37=17	Connect at 19.2Kbps with V.FC.
S37=18	Connect at 21.6Kbps with V.FC.
S37=19	Connect at 24.4Kbps with V.FC.
S37=20	Connect at 26.4Kbps with V.FC.
S37=21	Connect at 28.8Kbps with V.FC.

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=2		Modem will operate in fax class II mode.
#CLS=8		Modem will operate in voice mode.

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.
Note:	The z and a parameters specify the minimum and maximum originate mode connect speeds, respectively; the b and c parameters specify the minimum and maximum answer mode connect speeds, respectively.
Command	Function
x=0	Use V.21 modulation.
x=1	Use V.22 modulation.
x=2	Use V.22bis modulation.
x=3	Use V.23 modulation.
x=9	Use V.32 modulation.
x=10	Use V.32bis modulation.
í x=11	Use V.34 modulation.
x=64	Use Bell 103 modulation.
x=69	Use Bell 212A modulation.
x=74	Use V.FC modulation.
y=0	Automode disabled.
í y=1	Auto-detect highest speed enabled without V.8 (except V.34 which always uses V.8).
y=2	Auto-detect highest speed enabled with V.8.

MODULATION SELECTION (CON’T)
Command	Function
z, a, b, c=300	Set minimum or maximum connection speed at 300bps.
z, a, b, c=1200	Set minimum or maximum connection speed at 1200bps.
z, a, b, c=2400	Set minimum or maximum connection speed at 2400bps.
z, a, b, c=4800	Set minimum or maximum connection speed at 4800bps.
z, a, b, c=7200	Set minimum or maximum connection speed at 7200bps.
z, a, b, c=9600	Set minimum or maximum connection speed at 9600bps.
z, a, b, c=12000	Set minimum or maximum connection speed at 12Kbps.
z, a, b, c=14400	Set minimum or maximum connection speed at 14.4Kbps.
z, a, b, c=16800	Set minimum or maximum connection speed at 16.8Kbps.
z, a, b, c=19200	Set minimum or maximum connection speed at 19.2Kbps.
z, a, b, c=21600	Set minimum or maximum connection speed at 21.6Kbps.
z, a, b, c=24000	Set minimum or maximum connection speed at 24Kbps.
z, a, b, c=26400	Set minimum or maximum connection speed at 26.4Kbps.
z, a, b, c=28800	Set minimum or maximum connection speed at 28.8Kbps.

PULSE DIALING MODE
Type:	Configuration
Format:	AT [cmds] *Zn [cmds]
Description:	Sets the number of pulses per digit dialed while in pulse mode.
Command		Function
í *Z0		Number of pulses generated is equal to the dialed digit value (0 digit generates 10 pulses).
*Z1		Number of pulses generated is equal to the dialed digit value plus one (0 digit generates 1 pulse).

REPORT INFORMATION
Type:	Immediate
Format:	AT [cmds] In [cmds]
Description:	Displays requested information about the modem.
Command	Function
I0	Reports product identification code.
I1	Reports ROM checksum.
I2	Tests and reports ROM checksum.
I3	Reports firmware version and interface type.
I4	Reports OEM response.
I5	Reports country code.
I6	Reports data pump model and version.

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, #, *; 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.

VOICE BUFFER SPACE
Type:	Configuration
Format:	AT [cmds] #VSK=n [cmds]
Default:	255
Range:	0 - 255
Unit:	1 byte
Description:	Sets the amount of free space there must be in the transmit buffer before the XON signal is sent.

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=3	External microphone only used for voice I/O.
#VLS=4	Telephone line and handset used for voice I/O; internal speaker enabled.

VOICE - DISPLAY BUFFER SIZE
Type:	Immediate
Format:	AT [cmds] #VBQ? [cmds]
Description:	Displays the size of the voice buffer.