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V.34 PLUG AND PLAY INTERNAL

ACS COMPUTER GROUP

V.34 PLUG AND PLAY INTERNAL

Card Type

Modem (asynchronous)

Chipset

Unidentified

I/O Options

Voice, speakerphone

Maximum Data Rate

33.6Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

16-bit ISA

Fax Class

Class I

Data Modulation

Bell 103A/212A

ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34

Fax Modulation

ITU-T V.17, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Function

Label

Function

Label

Line in

CN1

Line out

CN2

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, ‘comma’, A/

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

&C, &D, &F, &G, &K, &P, &S, &T, &V, &W, &Y, &Z

Extended AT Commands

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

%C, %E, %L, %Q

Special AT Commands

#CID

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S30, S32, S33, S38, S91

Note: See MHI documentation for complete information.

Proprietary AT Command Set

COMMUNICATION PROTOCOLS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the communication protocol for low-speed data calls.

Command

Protocol

B0

Modem will use ITU-T V.22 at 300 or 1200bps.

í B1

Modem will use Bell 212A at 300 or 1200bps.

B2

Modem will use V.23 at 1200bps.

CONNECTION FAILURE CODE

Type:

Register

Format

AT [cmds] S86? [cmds]

Description:

Displays a code which corresponds to the reason the connection failed.

Value

Meaning

0

No failure - normal hang up.

4

Carrier signal lost.

5

No error-control detected for remote modem during feature negotiation.

6

Remote modem failed to respond to feature negotiation.

9

No common protocol found.

12

No failure - remote modem disconnected normally.

13

Remote modem failed to respond after 10 re-transmissions same message.

14

Violation of negotiated protocol caused failure.

20

Inactivity time out.

DIAL

Type:

Immediate

Format:

AT [cmds] D<#>;[cmds]

Description:

Dials the telephone number indicated 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.

DSn

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.

D!

Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook.

DIAL (CON’T)

Command

Function

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^

Enable calling tone for this call.

D;

Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.

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

Displays internal code.

I3

Displays firmware revision.

I4

Displays product features.

DISPLAY MANUFACTURER

Type:

Immediate

Format:

AT [cmds] #MFR? [cmds]

Description:

Displays the chipset 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.

HELP

Type:

Immediate

Format:

AT [cmds] &$ [cmds]

Description:

Displays a help screen of all ampersand commands.

LINE SPEED

Type:

Register

Format

AT [cmds] S37=n [cmds]

Description:

Sets the maximum connect speed attempted during handshake process.

Command

Function

í S37=0

Attempt fastest speed connection possible.

S37=3

Attempt to connect at 300bps.

S37=4

Attempt to connect at 1200bps.

S37=6

Attempt to connect at 2400bps.

S37=7

Attempt to connect at 4800bps.

S37=8

Attempt to connect at 7200bps.

S37=9

Attempt to connect at 9600bps.

S37=10

Attempt to connect at 12Kbps.

S37=11

Attempt to connect at 14.4Kbps.

S37=12

Attempt a V.34 connection.

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 I mode.

#CLS=8

Modem will operate in voice mode.

SPEAKERPHONE OPTIONS

Type:

Configuration

Format:

AT [cmds] #SPK=x,y,z [cmds]

Description:

Sets various options for speakerphone functions.

Command

Function

x=0

Microphone disabled.

x=1

Microphone enabled.

x=2

Microphone enabled with maximum gain, speaker disabled.

Default (y):

5

Range (y):

0 - 16

Unit (y):

-2 dBm

Description (y):

Sets the attenuation level for speaker output in voice mode.

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.

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 2000-3000, n 2000-3000, 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. Specifying a 0 for one frequency will generate a single-frequency tone.

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.

TRELLIS CODING

Type:

Configuration

Format:

AT [cmds] &Un [cmds]

Description:

Selects whether the modem will use trellis coding.

Command

Function

í &U0

Trellis coding enabled.

&U1

Trellis coding disabled.

V.34 MINIMUM BAUD RATE

Type:

Configuration

Format:

AT [cmds] S35=n [cmds]

Description:

Selects the minimum baud rate for V.34 mode.

Command

Function

í S35=0

Minimum baud rate is 2400 baud.

S35=1

Minimum baud rate is 2743 baud.

S35=2

Minimum baud rate is 2800 baud.

S35=3

Minimum baud rate is 3000 baud.

S35=4

Minimum baud rate is 3200 baud.

S35=5

Minimum baud rate is 3429 baud.

V.34 LINE SPEED

Type:

Configuration

Format:

AT [cmds] S34=n [cmds]

Description:

Selects what speed the modem will attempt to connect at in V.34 mode.

Command

Function

S34=0

Modem will attempt to connect at 2400bps in V.34 mode.

S34=1

Modem will attempt to connect at 4800bps in V.34 mode.

S34=2

Modem will attempt to connect at 7200bps in V.34 mode.

S34=3

Modem will attempt to connect at 9600bps in V.34 mode.

S34=4

Modem will attempt to connect at 12Kbps in V.34 mode.

S34=5

Modem will attempt to connect at 14.4Kbps in V.34 mode.

S34=6

Modem will attempt to connect at 16.8Kbps in V.34 mode.

S34=7

Modem will attempt to connect at 19.2Kbps in V.34 mode.

S34=8

Modem will attempt to connect at 21.6Kbps in V.34 mode.

S34=9

Modem will attempt to connect at 24Kbps in V.34 mode.

S34=10

Modem will attempt to connect at 26.4Kbps in V.34 mode.

S34=11

Modem will attempt to connect at 28.8Kbps in V.34 mode.

S34=12

Modem will attempt to connect at 31.2Kbps in V.34 mode.

í S34=13

Modem will attempt to connect at 33.6Kbps in V.34 mode.

VOICE BUFFER SPACE

Type:

Configuration

Format:

AT [cmds] #VSK=n [cmds]

Default:

255

Range:

0 - 255

Unit:

1 byte

Description:

Sets the amount of data the modem can send into the buffer after the XOFF signal is sent.

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 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=4

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

#VLS=6

Speakerphone used for voice I/O.

VOICE - LOCAL SERIAL PORT SPEED

Type:

Configuration

Format:

AT [cmds] #BDR=n [cmds]

Default:

0

Range:

0 - 48

Unit:

2400 bps

Description:

Sets the speed of the local serial port when in voice mode.

VOICE RECORD GAIN

Type:

Configuration

Format:

AT [cmds] #RG=hhhh [cmds]

Default:

7FFF

Range:

0000 - 7FFF

Unit:

Unidentified (hexadecimal)

Description:

Sets the gain level for recording in voice mode.

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:

0 - 255

Unit:

10 mS

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 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.

í #VSS=2

Standard silence detection sensitivity.

#VSS=3

Maximum silence detection sensitivity.

VOICE TRANSMISSION GAIN LEVEL

Type:

Configuration

Format:

AT [cmds] #TL=hhhh [cmds]

Default:

3FFF

Range:

0000 - 7FFF

Unit:

Unidentified (hexadecimal)

Description:

Sets the gain level for sending audio in voice mode.

VOICE TRANSMIT

Type:

Immediate

Format:

AT [cmds] #VTX

Description:

Commands the modem to begin transmitting voice data.