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SUPRAEXPRESS 288 PNP

SUPRA DIAMOND

SUPRAEXPRESS 288 PNP

Card Type

Fax, Modem (synchronous/asynchronous)

Chip Set

Unidentified

Maximum Data Rate

28.8Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

External

Fax Class

Class I

Data Modulation Protocol

Bell 103/212A

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

Rockwell V.FC

Fax Modulation Protocol

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

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Function

Label

Function

Label

Line out/in - Unidentified

CN1

DC power

CN4

Line in/out - Unidentified

CN2

Power switch

SW1

RS-232/422

CN3

   

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

SD

Red

On

Modem is transmitting data

SD

Red

Off

Modem is not transmitting data

PWR

Red

On

Power is on

PWR

Red

Off

Power is off

Proprietary AT Command Set

ACCEPT MNP RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \U [cmds]

Description:

Accept remote modemís request for MNP reliable mode

AUTO-FALLBACK/FALL-FORWARD

Type:

Configuration

Format:

AT [cmds] %Gn [cmds]

Description:

Selects auto-fallback/fall-forward

Command

Function

%G0

Auto-fallback/fall-forward disabled

í %G1

Auto-fallback/fall-forward enabled

AUTO-RETRAIN

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Controls auto-retrain mode

Command

Function

í %E0

Auto-retrain disabled

%E1

Auto-retrain enabled

AUXCTL OUTPUT LINE CONTROL

Type:

Configuration

Format:

AT [cmds] %Mn [cmds]

Description:

Controls AUXCTL output line level

Note: Function varies by model

Command

Function

í %M0

Line high only while modem in synchronous data mode

%M1

Line low only while modem in synchronous data mode

BIT-MAPPED REGISTER S14

Format:

AT [cmds] S14=n [cmds]

Default:

Unidentified

Range:

0-174

Unit:

Bit-mapped

Description:

Controls echo, result codes and display, dial mode, and answer/originate mode.

Bit

Value

Function

0

í 0

Not used

1

0

í 1

Command echo disabled

Command echo enabled

2

í 0

1

Result codes enabled

Result codes disabled

3

0

í 1

Display result codes in numeric format

Display result codes in verbose format

4

í 0

Not used

5

í 0

1

Tone dial enabled

Pulse dial enabled

6

í 0

Not used

7

0

1

Answer mode enabled

Originate mode enabled

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21=n [cmds]

Default:

4

Range:

0-253

Unit:

Bit-mapped

Description:

Selects jack type, CTS/DCD/DSR signals, low DTR action, and the long space disconnect function.

Bit

Value

Function

0

í 0

1

Selects RJ-11, RJ-41S, or RJ45S jack

Selects RJ-12 or RJ-13 jack

1

í 0

Not used

2

0

í 1

CTS forced high

CTS follows RTS

4, 3

í 00

01

10

11

Modem does not respond to DTR

Modem hangs-up and sends "OK" result code

Modem goes to command mode after DTR goes is off

Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.

5

í 0

1

DCD forced high

DCD normal

6

í 0

1

DSR forced high

DSR normal

7

í 0

1

Long space disconnect function disabled

Long space disconnect function enabled

BIT-MAPPED REGISTER S22

Format

AT [cmds] S22=n [cmds]

Default:

118

Range:

0-127

Unit:

Bit-mapped

Description:

Controls speaker volume and controls, and limits results codes.

Bit

Value

Function

1, 0

00

01

í 10

11

Low level volume

Low level volume

Medium level volume

High level volume

3, 2

00

í 01

10

11

Speaker off

Speaker off on carrier

Speaker always on

Speaker on during handshake

6 - 4

000

100

101

110

í 111

Basic result codes only enabled

Basic and connection speed result codes enabled

Basic and connection speed result codes and dialtone detection enabled

All result codes except dialtone detection enabled

All result codes enabled

BIT-MAPPED REGISTER S23

Format

AT [cmds] S23=n [cmds]

Default:

55

Range:

0-189

Unit:

Bit-mapped

Description:

Grants/denies remote digital loopback, controls DTE rate and parity, and sets guard tone.

Bit

Value

Function

0

0

í 1

Remote digital loopback denied

Remote digital loopback allowed

3 - 1

000

001

010

í 011

100

101

110

Sets serial port speed to 0-300bps

Sets serial port speed to 600bps

Sets serial port speed to 1200bps

Sets serial port speed to 2400bps

Sets serial port speed to 4800bps

Sets serial port speed to 9600bps

Sets serial port speed to 19200bps

5, 4

00

01

10

í 11

Parity even

Not Used

Parity odd

No Parity

7, 6

í 00

01

10

Guard tone disabled

Guard tone 550Hz enabled

Guard tone 1800Hz enabled

BIT-MAPPED REGISTER S27

Format

AT [cmds] S27=n [cmds]

Default:

73

Range:

0-11

Unit:

Bit-mapped

Description:

Selects synchronous/asynchronous mode, line type, clock source, and ITU-T/Bell modes.

Bit

Value

Function

3, 1, 0

000

001

010

011

100

í 101

110

Asynchronous Direct mode

Asynchronous off-line command mode and synchronous connect mode

Asynchronous off-line command mode - modem autodials first number in directory, then synchronous connect mode.

Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR.

Not Used

Asynchronous Reliable Mode

Asynchronous Normal Mode

2

í 0

1

Switched line (PSTN/Dial-up)

Leased line

5, 4

í 00

01

10

Modem generates clock

DTE generates clock

Modem generates clock from the receive carrier signal

6

0

í 1

ITU/T mode

Bell mode

BIT-MAPPED REGISTER S28

Format

AT [cmds] S28=n [cmds]

Default:

Unidentified

Range:

0-31

Unit:

Bit-mapped

Description:

Controls V.23 split speed, transmit/receive speed, half duplex; and pulse dialing.

Bit

Value

Function

0

í 0

1

V.23 split speed operation disabled

V.23 split speed operation enabled

1

0

1

75bps transmit, 1200bps receive enabled

1200bps transmit, 75bps receive enabled

2

0

1

V.23 half-duplex disabled

1200bps transmit, 1200bps receive enabled

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

BIT-MAPPED REGISTER S31

Format:

AT [cmds] S31=n [cmds]

Default:

2

Range:

0-10

Description:

Select automode and extended result code format.

Bit

Value

Function

0

í 0

Not used

1

0

í 1

Auto-mode disabled

Auto-mode ensabled

3, 2

í 00

01

10

Enables CONNECT result codes to report DTE speed

Full reporting of CONNECT result codes

Enables CONNECT result codes to report DCE speed

BIT-MAPPED REGISTER S40

Format

AT [cmds] S40=n [cmds]

Default:

Unidentified

Range:

0-239

Unit:

Bit-mapped

Description:

Controls power level and break handling; selects MNP extended services, link negotiation, and block size.

Bit

Value

Function

0

0

1

V.42 LAPM to MNP 10 connection disabled

V.42 LAPM to MNP 10 connection enabled

1

0

í 1

Power level adjustment disabled

Power level adjustment enabled

2

í 0

1

Link will be negotiated at highest possible speed

Link will be negotiated at 1200bps

5, 4, 3

000

001

010

011

100

í 101

\K0

\K1

\K2

\K3

\K4

\K5

7, 6

00

01

í 10

11

MNP block size is 64 characters

MNP block size is 128 characters

MNP block size is 192 characters

MNP block size is 256 characters

BIT-MAPPED REGISTER S41

Format

AT [cmds] S41=n [cmds]

Default:

Unidentified

Range:

0-31

Unit:

Bit-mapped

Description:

Selects compression, auto-retrain, flow control, and MNP mode.

Bit

Value

Function

1 - 0

00

01

10

11

Data compression disabled

MNP5 enabled

V.42bis enabled

MNP5 and V.42bis enabled

2

í 0

1

Auto-retrain disabled

Auto-retrain enabled

3

í 0

1

Flow control disabled

Flow control enabled

4

í 0

1

Stream mode for MNP

Block mode for MNP

BREAK SEND

Type:

Configuration

Format:

AT [cmds] \Bn [cmds]

Default:

Unidentified

Range:

1-9

Unit:

.1 second

Description:

Sends break to modem in non-error correction state

BREAK TYPE

Type:

Configuration

Format:

AT [cmds] \Kn [cmds]

Description:

Configures action of break signal

Command

Break from DTE

Modem receives \B

Break received from remote modem

\K0

Online command mode enabled, send no break to remote modem

Break sent to remote modem and buffers cleared

Buffers cleared, break sent to DTE

\K1

Break sent to remote modem and buffers cleared

Break sent to remote modem and buffers cleared

Buffers cleared, break sent to DTE

\K2

Online command mode enabled, send no break to remote modem

Send break to remote modem immediately

Break sent immediately to DTE

\K3

Send break to remote modem immediately

Send break to remote modem immediately

Break sent immediately to DTE

\K4

Online command mode enabled, send no break to remote modem

Send break with transmitted data

Break sent with received data to the DTE

í \K5

Send break with transmitted data

Send break with transmitted data

Break sent with received data to the DTE

BUSY DETECT WATERMARK

Type:

Register

Format:

AT [cmds] SCn=x [cmds]

Description:

Sets the way the modem accepts a busy signal by FCC specifications

Command

Value

Function

SC0=x

30

Minimum BUSY ON Time

SC1=x

0

Minimum BUSY ON Time

SC2=x

75

Maximum BUSY ON Time

SC3=x

0

Maximum BUSY ON Time

SC4=x

30

Minimum BUSY OFF Time

SC5=x

0

Minimum BUSY OFF Time

SC6=x

75

Maximum BUSY OFF Time

SC7=x

0

Maximum BUSY OFF Time

Note: Each register "pair" holds the value for each setting. To set a value, divide the setting by 256. The integer goes in the second register, while the remained goes in the first. (A setting of 516 would convert to 2 Remainder 4, and could be set by sending ATSC0=4SC1=2 to the modem.) Settings are in 1/100ths of a second. Setting SC0=25 & SC4=25 allows FAST BUSY to also be detected as BUSY.

BUSY PULSES

Type:

Register

Format

AT [cmds] SC8=n [cmds]

Default:

4

Range:

Unidentified

Unit:

1 pulse

Description:

Set number of valid BUSY Pulses before reporting BUSY

CALLER ID

Type:

Configuration

Format:

AT [cmds] #CID=n [cmds]

Description:

Controls the Caller ID function

Command

Function

#CID?

Displays current Caller ID mode

#CID=?

Returns Caller ID modes supported

#CID=0

Caller ID disabled

#CID=1

Caller ID displays formatted data

#CID=2

Caller ID displays raw hexadecimal data

CARRIER CONTROL SELECTION

Type:

Configuration

Format:

AT [cmds] C1 [cmds]

Description:

Provided for backward compatibility only. Does nothing but return "OK"

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode

Note: Same function as &Q(0-3) settings.

Command

Mode

í &M0

Asynchronous Direct mode

&M1

Asynchronous off-line command mode and synchronous connect mode.

&M2

Asynchronous off-line command mode - modem autodials first number in directory, then synchronous connect mode.

&M3

Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR.

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Qn [cmds]

Description:

Selects communications mode options

Command

Mode

í &Q0

Asynchronous Direct mode

&Q1

Asynchronous off-line command mode and synchronous connect mode.

&Q2

Asynchronous off-line command mode - modem autodials first number in directory, then synchronous connect mode.

&Q3

Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR.

&Q4

Not Used

í &Q5

Asynchronous Reliable Mode

&Q6

Asynchronous Normal Mode

&Q7

Not used

&Q8

Asynchronous Reliable Mode w/o v.42/v.42bis

&Q9

Asynchronous Reliable Mode w/o MNP 2-5

Note: Be VERY careful when issuing these commands! Once you enter &Q(1-3) and save it to memory,

there are only two known ways to return to Asynchronous Mode:

1. Issue AT &Q(0,5-9) &W from a Synchronous Terminal to restore the modem to Asynchronous Mode.

2. Connect modem to an Asynchronous Terminal with the DTR signal (line 20) disabled (a "break-out" box works very nicely for this) and issue the configuration you want or AT &Q(0,5-9) &W to return the modem to Asynchronous Mode.

COMMUNICATION PROTOCOLS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the communication protocol for data calls

Note: The B command allows the simultaneous selection of more than one suffix, enabling multiple protocols.

Command

Function

B0

V.21 (1200bps) and/or V.22 (1200 bps)

B1

Bell 103 (300 bps)Band/or Bell 212A (1200 bps)

B15

V.21 (300 bps) only

B16

Bell 103 (300 bps) only

COMPRESSION

Type:

Configuration

Format:

AT [cmds] %Cn [cmds]

Description:

Selects data compression

Command

Function

%C0

Data compression disabled

%C1

MNP5 enabled

%C2

V.42bis enabled

%C3

MNP5 and V.42bis enabled

CONNECT MODE

Type:

Configuration

Format:

AT [cmds] \Nn [cmds]

Description:

Controls the type of connection the modem will operate in

Command

Function

\N0

Normal mode enabled

\N1

Direct mode enabled

\N2

MNP reliable mode enabled

í \N3

Auto-reliable mode enabled

Note: To force LAPM only connections use AT\N3S36=0

CONVERT TO MNP RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \Y [cmds]

Description:

Converts to MNP reliable mode from normal or direct mode

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

Note: The action each variant of &D causes depends on the setting of &Q

&Q Setting

&D0

&D1

&D2

&D3

&Q0, &Q5, &Q6, &Q8, &Q9

NONE

Command 2

Command 3

Command 4

&Q1

Command 0

Command 2

Command 3

Command 4

&Q2

Command 3

Command 3

Command 3

Command 3

&Q3

Command 3

Command 3

Command 3

Command 3

&Q4

Command 1

Command 2

Command 3

Command 4

Command

Function

Command 0

Modem does not respond to DTR

Command 1

Modem hangs-up and sends "OK" result code

Command 2

Modem goes to command mode after DTR goes is off

Command 3

Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled.

Command 4

Modem is initialized after DTR goes off

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

- ( ) i

These symbols and spaces are ignored

J

Do MNP 10 link negotiation at highest rate (this call only, see *H)

K

Enable power level adj. during MNP 10 link neg. (this call only, see Mn)

L

Dial the last dialing string (limitted to the first 40 characters).

P

Pulse dial the following digits

R

Dial with answer rather than originate carrier.

(Some models accept, but do not support, this command.)

Normal Mode: Calling Side: ATDTn Answering Side: ATA

Reverse Mode: Calling Side: ATDTnR Answering Side: ATXD

Sn

Dial stored in non-volitile memory location n. n=0-3

T

Tone dial enabled

W

Wait for second dialtone

*

DTMF code for "star"

#

DTMF code for "gate"

@

Wait for quiet answer, a 5 second silence.

,

Pause before finishing dial string, time set in S8.

!

Hook flash, go on-hook for time set in S29.

^

Enabled 1300Hz call originating pulse

;

Return to command state after dialing

>

Generate a grounding pulse on the EARTH relay output. If country code setting supports it.

DISPLAY STORED NUMBER

Type:

Immediate

Format:

AT [cmds] \F [cmds]

Description:

Display telephone directory stored in non-volatile memory

DTR CHANGE THRESHOLD

Type:

Register

Format

AT [cmds] S25=n [cmds]

Default:

5

Range:

0-255

Unit:

.01 second

Description:

Sets maximum time a change in the DTR signal will be ignored

ECHO DATA

Type:

Configuration

Format:

AT [cmds] \En [cmds]

Description:

Enables modem to echo received data

Note: Accepted, but not functional on some models

Command

Function

\E1

One shot that minimizes local echo to try to match local network

ECHOPLEX VALIDITY

Type:

Configuration

Format:

AT [cmds] Fn [cmds]

Description:

Selects whether commands sent while in data mode are echoed

Note: This command is only supported on older modems.

Command

Function

F0

Not Supported (Returns "ERROR")

í F1

Provided for backward compatibility only. (Returns "OK")

FACTORY DEFAULT PROFILE

Type:

Configuration

Format:

AT [cmds] &F [cmds]

Description:

Sets values in active profile to values found in the default profile

Command

Function

&F0

No flow control, No error correction, No data compression

&F1

MAC hardware flow control, correction & compression active

&F2

Hardware flow control, correction & compression active

FLASH DIAL MODIFIER TIME

Type:

Register

Format

AT [cmds] S29=n [cmds]

Default:

7

Range:

0-255

Unit:

.1 second

Description:

Time the modem will go on-hook upon receiving the ! dial modifier in dial string.

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] \Gn [cmds]

Description:

Selects modem port flow control for Normal and Direct modes

Command

Function

í \G0

Flow control disabled

\G1

Flow control enabled

FLOW CONTROL CHARACTER - XON

Type:

Register

Format:

AT [cmds] S32=n [cmds]

Default:

17

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XON

FLOW CONTROL CHARACTER - XOFF

Type:

Register

Format:

AT [cmds] S33=n [cmds]

Default:

19

Range:

0-255

Unit:

ASCII

Description:

Sets the character used to represent XOFF

INACTIVITY TIMER

Type:

Configuration

Format:

AT [cmds] \Tn [cmds]

Default:

0

Range:

0-42

Unit:

1 second

Description:

Sets the length of time that the modem does not receive information before it disconnects. \T=0 will disable timer

INACTIVITY TIMER

Type:

Register

Format

AT [cmds] S30=n [cmds]

Default:

0

Range:

0-255

Unit:

10 seconds

Description:

Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process.

Note: S30=0 disables the timer and allows indefinite inactivity. In Reliable mode any data transfer resets timer. In Normal mode only sent data resets timer.

INITIATE MNP RELIABLE MODE

Type:

Immediate

Format:

AT [cmds] \O [cmds]

Description:

Initiates MNP reliable mode from normal or direct mode

LINE SELECT MODULATION

Type:

Configuration

Format:

AT [cmds] Fn [cmds]

Description:

Selects the speed/protocol the modem will operate in

Note: Use either ATFn or a combination of ATS37=n and ATN0, but DO NOT try to USE BOTH at the same time.

Command

Function

F0

AutoMode Selection (try rates in order from fast to slow).

F1

300 bps only (protocol according to Bn setting)

F2

Not Used (return "OK")

F3

v.23 only 75TX/1200RX (originate) or 1200TX/75RX (answer)

F4

1200 bps only (protocol according to Bn setting)

F5

2400 bps only (v.22bis)

F6

4800 bps only (v.32/v.32bis)

F7

7200 bps only (v.32bis)

F8

9600 bps only (v.32/v.32bis)

F9

12000 bps only (v.32bis)

F10

14400 bps only (v.32bis)

LINE SIGNAL LEVEL

Type:

Immediate

Format

AT [cmds] %L [cmds]

Default:

Unidnetified

Range:

9-43

Unit:

-dBm

Description:

Returns a value which indicates the received line signal level

LINE SIGNAL QUALITY

Type:

Immediate

Format

AT [cmds] %Q [cmds]

Default:

Unidentified

Range:

0-127

Unit:

Unidentified

Description:

Returns a value which indicates line signal quality

LOCK SERIAL PORT

Type:

Configuration

Format:

AT [cmds] \Jn [cmds]

Description:

Sets operation of serial port speed

Command

Function

\J0

Serial speed locked

\J1

Serial speed follows connect speed

MAXIMUM BLOCK SIZE FOR TRANSMISSION

Type:

Configuration

Format:

AT [cmds] \An [cmds]

Description:

Sets the maximum transmittable block size

Command

Function

\A0

MNP block size is 64 characters

\A1

MNP block size is 128 characters

í \A2

MNP block size is 192 characters

\A3

MNP block size is 256 characters

MNP - EXTENDED SERVICES

Type:

Configuration

Format:

AT [cmds] -Kn [cmds]

Description:

Selects MNP extended services (MNP10)

Command

Function

-K0

V.42 LAPM to MNP 10 connection disabled

-K1

V.42 LAPM to MNP 10 connection enabled

MNP - STREAM/BLOCK MODE

Type:

Configuration

Format:

AT [cmds] \Ln [cmds]

Description:

Selects the transfer mode for MNP link

Command

Function

í \L0

Stream mode for MNP enabled

\L1

Block mode for MNP enabled

MNP10 - FALLBACK

Type:

Configuration

Format:

AT [cmds] -Qn [cmds]

Description:

Allows MNP10 to fall back to speeds slower than 4800bps

MNP10 - LINK NEGOTIATION

Type:

Configuration

Format:

AT [cmds] *Hn [cmds]

Description:

Sets the speed at which MNP10 link negotiation will occur

Command

Function

í *H0

Link will be negotiated at highest possible speed

*H1

Link will be negotiated at 1200bps

*H2

Link will be negotiated at 4800bps

MNP10 - POWER LEVEL ADJUST

Type:

Configuration

Format:

AT [cmds] )Mn [cmds]

Description:

Controls automatic transmit power level adjustment during MNP 10 link negotiation

Command

Function

í )M0

Power level adjustment disabled

)M1

Power level adjustment enabled

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays requested information

Command

Function

I0

SupraFAXModem product ID code

I1

ROM checksum

I2

Test Checksum (OK if correct, ERROR if not)

I3

ROM revision code

I4

Encrypted report of supported protocols

I5

Supra Copyright information

I10

Supported Features

I99

Electronic Serial Number

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Qn [cmds]

Description:

Enables modem to send result codes to the DTE

Command

Function

í Q0

Result code sending enabled

Q1

Result code sending disabled

Q2

Enable result code sending when Originating, disable when answering

RTS TO CTS DELAY

Type:

Register

Format

AT [cmds] S26=n [cmds]

Default:

1

Range:

0-255

Unit:

.01 second

Description:

Sets the duration of delay for CTS to respond to RTS status change (sync mode only)

SELECT CALL PROGRESS RESULT CODES

Type:

Configuration

Format:

AT [cmds] Xn [cmds]

Description:

Enables selection of tone detection and associated result code format options

Command

Function

X0

Basic result codes only enabled

X1

Basic and connection speed result codes enabled

X2

Basic and connection speed result codes and dialtone detection enabled

X3

All result codes except dialtone detection enabled

í X4

All result codes enabled

SLEEP TIMER

Type:

Register

Format

AT [cmds] S24=n [cmds]

Default:

0

Range:

0-255

Unit:

1 second

Description:

Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.

STATUS-REGISTER

Type:

Configuration

Format:

AT [cmds] (see below) [cmds]

Description:

Gives options to read or write to a specified register

Command

Function

=n

Write value n to the last S register viewed

?

Displays current setting for the last S register accessed

Sr?

Reports value in S register r

SCr?

Reports value is SC register r

Sr=n

Write value n into S register r

SCr=n

Write value n into SC register r

SWITCH TO NORMAL MODE

Type:

Immediate

Format:

AT [cmds] \Z [cmds]

Description:

Switches to normal mode from MNP mode

TEST MODES

Type:

Register

Format:

AT [cmds] S16=n [cmds]

Default:

0

Range:

0-125

Unit:

Bit-mapped

Description:

Controls loopback tests, analog, digital, remote digital, and self tests.

Bit

Value

Function

0

í 0

1

Local analog loopback not in progress

Local analog loopback in progress

1

í 0

Not used

2

í 0

1

Local digital loopback not in progress

Local digital loopback in progress

3

í 0

1

Modem not in remote digital loopback

Remote digital loopback in progress

4

í 0

1

Remote digital loopback not requested

Remote digital loopback requested

5

í 0

1

Remote digital loopback w/ self-test not in progress

Remote digital loopback w/ self-test in progress

6

í 0

1

Local analog loopback w/ self-test not in progress

Local analog loopback w/ self-test in progress

TRANSMISSION LEVEL - CELLULAR

Type:

Configuration

Format:

AT [cmds] @Mn [cmds]

Default:

Unidentified

Range:

0-1

Unit:

Unidentified

Description:

Sets the signal level for transmission while in cellular mode (MNP10)

V.23 MODE

Type:

Configuration

Format:

AT [cmds] %Fn [cmds]

Description:

Selects V.23 split-speed and half-duplex

Command

Function

%F1

75bps transmit, 1200bps receive (split-speed)

%F2

1200bps transmit, 75bps receive (split-speed)

%F3

1200bps transmit, 1200bps receive (half-duplex)

V.23 - SPLIT-SPEED

Type:

Configuration

Format:

AT [cmds] \Wn [cmds]

Description:

Controls V.23 split-speed mode

Command

Function

í \W0

V.23 split-speed mode disabled

\W1

V.23 split-speed mode enabled

V.42bis - CLEAR DICTIONARY

Type:

Immediate

Format:

AT [cmds] %P [cmds]

Description:

Clears both modems' V.42bis dictionaries

V.42bis - COMPRESSION CONTROL

Type:

Configuration

Format:

AT [cmds] %Mn [cmds]

Description:

Controls V.42bis data compression

Note: Function varies by model

Command

Function

%M0

V.42bis disabled

%M1

V.42bis when transmitting enabled

%M2

V.42bis when receiving enabled

í %M3

V.42bis when transmitting/receiving enabled

V.42bis - DICTIONARY SIZE

Type:

Configuration

Format:

AT [cmds] %Dn [cmds]

Description:

Select V.42 dictionary size

Command

Function

%D0

Select 512 bytes

%D1

Select 1024 bytes

í %D2

Select 2048 bytes

%D3

Select 4096 bytes on one-way compression; 2048 bytes on two-way compression

V.42bis - MAXIMUM STRING LENGTH

Type:

Immediate

Format:

AT [cmds] %Sn [cmds]

Default:

32

Range:

6-250

Unit:

Characters

Description:

Selects string size for V.42bis compression