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DESKPORTE FAST

MICROCOM, INC.

DESKPORTE FAST

Card Type

Modem (synchronous/asynchronous)

Processor

Z80182

Processor Speed

18.4MHz

Chipset

Microcom

Maximum Onboard Memory

64KB SRAM (32KB battery backup)/128KB Flash ROM

Maximum Data Rate

28.8Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

Serial, parallel

Fax Class

Class I

Data Modulation

Bell 103A/212A

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

Rockwell V.FC

Fax Modulation

Unidentified

Error Correction/Compression

MNP5, MNP10, V.42, V.42bis

CONNECTIONS

Function

Label

Function

Label

Talk/Data button

BT1

RS-232/422 port

CN3

Originate/Answer button

BT2

DC power

CN4

Power switch

BT3

Parallel port

CN5

Line in

CN1

LCD display

LCD

Line out

CN2

Volume

R1

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Factory configured - do not alter

JP2

Unidentified

í Factory configured - do not alter

JP4

Unidentified

í Pin 1 of serial port connected to signal ground

JP6

Pins 2 & 3 closed

Pin 1 of serial port connected to chassis ground

JP6

Pins 1 & 2 closed

í Received signal level set to -43 dBm

JP7

Pins 1 & 2 closed

Received signal level set to -33 dBm

JP7

Pins 2 & 3 closed

LINE TYPE SELECTION

Setting

JP1/A

JP1/B

JP1/C

Leased line (0 dBm)

Open

Open

Closed

Permissive (-10 dBm)

Closed

Open

Open

Programmable (-12 dBm)

Open

Closed

Open

CONFIGURATION MODE FUNCTION

Mode

Function

0

Normal operation of modem - sets power-up defaults for various commands

1

Controls flow control and connect mode defaults

2

Selects leased-line and synchronous mode options

3

Controls serial port signals

4

Controls synchronous clock and busy out

5

Selects echo and result code formatting

6

Controls various command options

7

Selects flow control and parity checking

8

Controls serial port parity and speed

9

Configures line speed options

10

Performs diagnostic tests

Note: The DeskPorte FAST modem can be configured by switches in eleven modes, although command configuration is preferable when possible. Configuration modes 1 through 9 can be stored in NVRAM by pressing the reset switch. Mode 0 is read on reset or power-up is SW2/5 is on. If SW2/5 is off, no switch settings will be used. Before operating, the modemís switches should be returned to mode 0 and the appropriate settings made.

CONFIGURATION MODE SELECTION

Setting

SW1/1

SW1/2

SW1/3

SW1/4

í 0

Off

Off

Off

Off

1

On

Off

Off

Off

2

Off

On

Off

Off

3

On

On

Off

Off

4

Off

Off

On

Off

5

On

Off

On

Off

6

Off

On

On

Off

7

On

On

On

Off

8

Off

Off

Off

On

9

On

Off

Off

On

10

On

On

On

On

 

Configuration Mode 0 - Normal Operation

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Factory configured - do not alter

SW2/3

Off

í Modem reloads user configuration on reset

SW2/4

Off

Modem reloads factory configuration on reset

SW2/4

On

í Modem does not load configuration from switches

SW2/5

Off

Modem loads configuration from switches

SW2/5

On

í Cellular phone support disabled

SW2/6

Off

Cellular phone support enabled

SW2/6

On

í Command set enabled

SW2/7

Off

Command set disabled

SW2/7

On

í Auto-answer enabled

SW2/8

Off

Auto-answer disabled

SW2/8

On

COMMAND SET SELECTION

Setting

SW2/1

SW2/2

Asynchronous AT

Off

Off

Asynchronous V.25bis

On

Off

Synchronous V.25bis

Off

On

Transparent synchronous, command set disabled

On

On

 

Configuration Mode 1 - Flow Control/Connect Mode

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Factory configured - do not alter

SW2/6

N/A

í Factory configured - do not alter

SW2/7

N/A

í Factory configured - do not alter

SW2/8

N/A

FLOW CONTROL SELECTION

Setting

SW2/1

SW2/2

í Use setting from command set

Off

Off

Flow control disabled

On

Off

Use bidirectional XON/XOFF

Off

On

Use unidirectional XON/XOFF

On

On

CONNECT MODE SELECTION

Setting

SW2/3

SW2/4

SW2/5

í Use setting from command set

Off

Off

Off

Normal mode

On

Off

Off

Direct mode

Off

On

Off

Reliable mode

On

On

Off

Auto-reliable mode

Off

Off

On

LAPM reliable mode

On

Off

On

LAPM auto-reliable mode

Off

On

On

LAPM and MNP reliable mode

On

On

On

 

Configuration Mode 2 - Leased-Line/Synchronous

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Factory configured - do not alter

SW2/8

N/A

SYNCHRONOUS AUTO-DIAL CONFIGURATION

Setting

SW2/1

SW2/2

í Use setting from command set

Off

Off

Manual dial only

On

Off

Dial first stored number

Off

On

Dial second stored number

On

On

LINE TYPE SELECTION

Setting

SW2/3

SW2/4

SW2/5

í Use setting from command set

Off

Off

Off

Switched line type

On

Off

Off

Leased line type

Off

On

Off

Leased line type, modem will go off hook for 6 seconds when Originate/Answer button pushed

On

On

Off

SYNCHRONOUS MODE CTS SIGNAL CONFIGURATION

Setting

SW2/6

SW2/7

í Use setting from command set

Off

Off

CTS follows RTS

On

Off

CTS forced high

Off

On

CTS and RTS emulate half-duplex connection

On

On

 

Configuration Mode 3 - Serial Port Signals

CD SIGNAL CONFIGURATION

Setting

SW2/1

SW2/2

í Use setting from command set

Off

Off

CD forced high

On

Off

CD normal

Off

On

CD forced high except at disconnect

On

On

DSR AND CTS SIGNAL CONFIGURATION

Setting

SW2/3

SW2/4

SW2/5

í Use setting from command set

Off

Off

Off

DSR and CTS forced high

On

Off

Off

CTS follows CD; if &C is not set to 1 then DSR also follows CD, otherwise it follows OH

Off

On

Off

DSR and CTS follow CD

On

On

Off

DSR normal, CTS forced high

Off

Off

On

DSR and CTS normal

On

Off

On

DTR SIGNAL CONFIGURATION

Setting

SW2/6

SW2/7

SW2/8

í Use setting from command set

Off

Off

Off

DTR ignored

On

Off

Off

Modem enters command state on low DTR

Off

On

Off

Modem goes on hook on low DTR

On

On

Off

Modem resets on low DTR

Off

Off

On

 

Configuration Mode 4 - Clock Source/Busy Out

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Factory configured - do not alter

SW2/5

N/A

í Factory configured - do not alter

SW2/6

N/A

í Factory configured - do not alter

SW2/7

N/A

í Factory configured - do not alter

SW2/8

N/A

LOOPBACK TEST AND BUSY OUT CONFIGURATION

Setting

SW2/1

SW2/2

í Use setting from command set

Off

Off

Pins 18 and 21 have no function

On

Off

Busy Out when pin 18 is high, perform local analog loopback test on high DTR

Off

On

Perform local analog loopback test when pin 18 is high, remote digital loopback test when pin 21 is high

On

On

CLOCK SOURCE SELECTION

Setting

SW2/3

SW2/4

í Use setting from command set

Off

Off

Internal clock source

On

Off

External clock source

Off

On

Slave to remote clock

On

On

 

Configuration Mode 5 - Echo/Result Codes

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Factory configured - do not alter

SW2/7

N/A

í Factory configured - do not alter

SW2/8

N/A

COMMAND ECHO CONFIGURATION

Setting

SW2/1

SW2/2

í Use setting from command set

Off

Off

Command echo disabled

On

Off

Command echo enabled

Off

On

RESULT CODE CONFIGURATION

Setting

SW2/3

SW2/4

í Use setting from command set

Off

Off

Result codes enabled

On

Off

Result codes disabled

Off

On

Result codes enabled on originate only

On

On

RESULT CODE TYPE SELECTION

Setting

SW2/5

SW2/6

í Use setting from command set

Off

Off

Modem will send verbose result codes

On

Off

Modem will send numeric result codes

On

On

 

Configuration Mode 6 - Various

ERROR CORRECTION RESULT CODE CONFIGURATION

Setting

SW2/1

SW2/2

í Use setting from command set

Off

Off

Use standard format

On

Off

Use error correction result codes with 9600 given for all speeds between 4800bps and 12Kbps

Off

On

Use error correction result codes with real speed given

On

On

SERIAL PORT SPEED LOCK SELECTION

Setting

SW2/3

SW2/4

í Use setting from command set

Off

Off

Serial port speed locked

On

Off

Serial port speed follows connect speed

On

On

BREAK TYPE

Setting

SW2/5

SW2/6

í Use setting from command set

Off

Off

Use setting for \K0

On

Off

Use setting for \K1

Off

On

Use setting for \K5

On

On

INACTIVITY TIMER

Setting

SW2/7

SW2/8

í Use setting from command set

Off

Off

Inactivity timer disabled

On

Off

Set inactivity timer to 2 minutes

Off

On

Set inactivity timer to 15 minutes

On

On

 

Configuration Mode 7 - Flow Control/Parity Checking

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Factory configured - do not alter

SW2/6

N/A

í Factory configured - do not alter

SW2/7

N/A

í Factory configured - do not alter

SW2/8

N/A

FLOW CONTROL

Setting

SW2/1

SW2/2

SW2/3

í Use setting from command set

Off

Off

Off

Flow control disabled

On

Off

Off

Bidirectional XON/XOFF flow control enabled

Off

On

Off

CTS flow control by DCE enabled

On

On

Off

Bidirectional RTS/CTS flow control enabled

Off

Off

On

Unidirectional XON/XOFF flow control by DCE enabled

On

Off

On

CTS forced low until connection then CTS flow control by DCE

Off

On

On

Bidirectional RTS/CTS flow control after connection

On

On

On

ESCAPE AND FLOW CONTROL CHARACTER PARITY CHECKING

Setting

SW2/4

SW2/5

í Use setting from command set

Off

Off

Parity checking of flow control and escape characters disabled

On

Off

Flow control and escape characters will be processed only if their parity matches serial port

Off

On

Escape characters will be processed only if their parity matches serial port

On

On

 

Configuration Mode 8 - Serial Port Parity/Speed

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Factory configured - do not alter

SW2/8

N/A

SERIAL PORT PARITY SELECTION

Setting

SW2/1

SW2/2

SW2/3

SW2/4

í Use setting from command set

Off

Off

Off

Off

Seven data bits, odd parity

On

Off

Off

Off

Seven data bits, even parity

Off

On

Off

Off

Seven data bits, MARK parity

On

On

Off

Off

Seven data bits, SPACE parity

Off

Off

On

Off

Eight data bits, no parity

On

Off

On

Off

Eight data bits, odd parity

Off

On

On

Off

Eight data bits, even parity

On

On

On

Off

Eight data bits, MARK parity

Off

Off

Off

On

LOCAL SERIAL PORT SPEED SELECTION

Setting

SW2/5

SW2/6

SW2/7

í Use setting from command set

Off

Off

Off

2400bps serial port speed

On

Off

Off

4800bps serial port speed

Off

On

Off

9600bps serial port speed

On

On

Off

19.2Kbps serial port speed

Off

Off

On

38.4Kbps serial port speed

On

Off

On

57.6Kbps serial port speed

Off

On

On

115.2Kbps serial port speed

On

On

On

 

Configuration Mode 9 - Line Speed

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í Factory configured - do not alter

SW2/8

N/A

LINE SPEED SELECTION

Setting

SW2/1

SW2/2

SW2/3

í Use setting from command set

Off

Off

Off

2400bps line speed

On

Off

Off

4800bps line speed

Off

On

Off

9600bps line speed

On

On

Off

14.4Kbps line speed

Off

Off

On

19.2Kbps line speed

On

Off

On

24Kbps line speed

Off

On

On

28.8Kbps line speed

On

On

On

SPEED MATCHING CONFIGURATION

Setting

SW2/4

SW2/5

í Use setting from command set

Off

Off

Modem will match connect speeds.

On

Off

Modem will connect only at current speed.

Off

On

Modem will use ITU-T automode to match speeds.

On

On

LINE SPEED DETERMINATION CONFIGURATION

Setting

SW2/6

SW2/7

í Use setting from command set

Off

Off

Line speed determined by serial port speed

On

Off

Line speed determined by user

Off

On

 

Configuration Mode 10 - Diagnostic Tests

Diagram of switch position indicator

TOGGLE SWITCHES

Function

Label

Function

Label

Start or stop test in progress

BT1

Start or stop test in progress

SW2/3

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Local digital loopback test enabled

SW2/4

On

Local digital loopback test disabled

SW2/4

Off

Local analog loopback test enabled

SW2/5

On

Local analog loopback test disabled

SW2/5

Off

Local analog loopback with self-test enabled

SW2/6

On

Local analog loopback with self-test disabled

SW2/6

Off

Display switch positions on front panel LCD

SW2/7

On

Do not display switch positions on front panel LCD

SW2/7

Off

Clear all switch positions

SW2/8

On

Normal operation

SW2/8

Off

Note: For information on SW2/7 please see the diagram above. Lit segments indicate that a switch is on, and unlit ones indicate a switch that is off. Switch settings may also be displayed with the %S command.

The usage of SW2/8 is to clear all test modes. All switches should be in the off position before turning SW2/8 on.

COMMAND SET SELECTION

Setting

SW2/1

SW2/2

Asynchronous AT

Off

Off

Asynchronous V.25bis

On

Off

Synchronous V.25bis

Off

On

Synchronous, command set disabled

On

On

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

TST

Unidentified

On

System error has occurred

TST

Unidentified

Off

Modem is functioning normally

TST

Unidentified

Blinking

Modem has detected a data error or is retraining

DCD

Unidentified

On

Carrier signal detected

DCD

Unidentified

Off

Carrier signal not detected

DTR

Unidentified

On

DTR signal is high

DTR

Unidentified

Off

DTR signal is low

RXD

Unidentified

Blinking

Modem is receiving data

RXD

Unidentified

Off

Modem is not receiving data

TXD

Unidentified

Blinking

Modem is transmitting data

TXD

Unidentified

Off

Modem is not transmitting data

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, Ďcommaí, A/

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

&D, &F, &G, &M, &P, &T, &W, &X, &Y, &Z

Extended AT Commands

\A, \B, \C, \E, \J, \N, \Q, \T

%A, %C, %E, %F, %G

V.25 Bis Commands

CIC, CRN, CRS, DIC, INC, INV, LSN, PRN, RLN, VAL

Special AT Commands

-J, -K, *H, )M, @M, :E

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S14, S16, S18, S22, S23, S25, S26, S27

Note: See MHI documentation for complete information.

 

Proprietary AT Command Set

AUTO-LOGON

Type:

Immediate

Format:

AT [cmds] $An [cmds]

Default:

0

Range:

0 - 9

Description:

Performs the auto-logon sequence stored at memory location n.

BIT-MAPPED REGISTER S21

Format

AT [cmds] S21=n [cmds]

Default:

Unidentified

Range:

0-253

Unit:

Bit-mapped

Description:

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

Bit

Value

Function

0

0

Not used.

2, 1

00

01

10

CTS follows RTS in data mode; RTS is ignored in command mode.

CTS forced high, RTS is ignored.

ITU-T V.13 used to simulate half-duplex modes on full-duplex connections.

4, 3

00

01

10

11

DTR signal ignored.

Modem goes to command mode on low DTR.

Modem disconnects on low DTR; Auto-Answer is disabled.

Modem is initialized on low DTR.

5

0

1

DCD forced high.

DCD normal.

6

0

Not used.

7

0

1

Long space disconnect function disabled.

Long space disconnect function enabled.

BIT-MAPPED REGISTER :T15

Format:

AT [cmds] :T15=n [cmds]

Default:

133

Range:

0 - 229

Description:

Controls CTS, RTS, and CD signals, synchronous clocks, and V.32 answer tones.

Bit

Value

Function

0

0

í 1

CTS normal during synchronous and direct asynchronous mode retrains.

CTS forced low during synchronous and direct asynchronous mode retrains.

1

í 0

Not used.

2

0

í 1

When &R is set to 0 or 2, RTS is ignored when not connected.

When &R is set to 0 or 2, CTS follows RTS when not connected.

3

í 0

Not used.

4

í 0

Not used.

5

í 0

1

Synchronous clock disabled when not connected.

Synchronous clock enabled when not connected.

6

í 0

1

CD follows link negotiation status.

When &C is set to 1, CD follows carrier.

7

0

í 1

V.32 answer tone phase is normal.

V.32 answer tone phase may be reversed.

BIT-MAPPED REGISTER :T26

Format:

AT [cmds] :T26=n [cmds]

Default:

0

Range:

0 - 3

Description:

Controls billing delay and V.32 answer tone length.

Bit

Value

Function

0

í 0

1

2-second billing delay enabled.

2-second billing delay disabled.

1

í 0

1

Normal V.32 answer tone length.

Short V.32 answer tone length.

BREAK TYPE

Type:

Configuration

Format:

AT [cmds] \Kn [cmds]

Description:

Configures the response the modem performs in response to a received break signal.

Command

Break from DTE

Reliable/Normal mode

Break from DTE

Direct mode

Modem receives \B

Break from remote modem

\K0

Enter command mode, do not send break to remote modem.

Send break to remote modem immediately, then enter command mode.

Buffers cleared and break sent to remote modem.

Buffers cleared and break sent to DTE.

\K1

Buffers cleared and break sent to remote modem.

Send break to remote modem immediately.

Buffers cleared and break sent to remote modem.

Buffers cleared and break sent to DTE.

\K2

Enter command mode, do not send break to remote modem.

Send break to remote modem immediately, then enter command mode.

Send break to remote modem immediately.

Send break to DTE immediately.

\K3

Send break to remote modem immediately.

Send break to remote modem immediately.

Send break to remote modem immediately.

Send break to DTE immediately.

\K4

Enter command mode, do not send break to remote modem.

Send break to remote modem immediately, then enter command mode.

Send break to remote modem with transmitted data.

Break sent with received data to the DTE.

\K5

Send break with transmitted data.

Send break to remote modem immediately.

Send break to remote modem with transmitted data.

Break sent with received data to the DTE.

CALL RESTORAL TIMER

Type:

Configuration

Format:

AT [cmds] )Hn [cmds]

Default:

0

Range:

0 - 255

Unit:

1 minute

Description:

Sets the amount of time that the modem will attempt to reconnect to a MNP reliable mode call that has terminated abnormally. Setting )H to 0 disables this feature. If the modem reconnects successfully, the call will proceed as if it did not disconnect.

CALL SECURITY

Type:

Configuration

Format:

AT [cmds] $Gn [cmds]

Description:

Selects whether the modem will use call security procedures on incoming connections.

Command

Function

í $G0

Call security disabled.

$G1

Call security enabled.

CALL SECURITY - DISPLAY PASSWORD TABLE

Type:

Immediate

Format:

AT [cmds] $I [cmds]

Description:

Displays the list of user IDs, passwords, and permission levels.

CALL SECURITY - LOGON SEQUENCE

Type:

Configuration

Format:

AT [cmds] $Ln [cmds]

Description:

Changes the logon sequence n. Only sequences 5 through 9 are user configurable. The user will be prompted to enter the new logon sequence using the commands listed below. Errors will be indicated after the sequence by caret characters underneath the problem section.

Command

Function

An

Aborts the call if the last string specified to wait for is not received in n seconds.

B

Modem compares the userís password to the password table. If it does not match the user is given two more tries, then disconnects. If the passwords match the modem acts according to the stored permission level.

C

Modem waits for 15 seconds for the remote modem to disconnect. If it does not then the local modem disconnects, waits five seconds, then calls the user at the number entered. If no number was entered the modem calls the number stored at the location matching the user number.

Dn

Delays for n seconds.

Nn

Waits for the user to enter his user ID. The following options are available:

 

Option

Function

 

í 0

Entered characters are not echoed.

 

1

Entered characters are echoed.

 

2

Entered characters are echoed as periods.

Pn

Waits for the user to enter his password. The following options are available:

 

Option

Function

 

í 0

Entered characters are not echoed.

 

1

Entered characters are echoed.

 

2

Entered characters are echoed as periods.

CALL SECURITY - LOGON SEQUENCE (CONíT)

Command

Function

Rn

Restarts the logon sequence if the last string specified to wait for is not received in n seconds.

Sn

Skips to the next section of the logon sequence if the last string specified to wait for is not received in n seconds.

Vn

Waits for the user to enter his phone number for a callback sequence. The following options are available:

 

Option

Function

 

í 0

Entered characters are not echoed.

 

1

Entered characters are echoed.

 

2

Entered characters are echoed as periods.

Z

Modem compares the userís password to the password table. If it does not match the user is given two more tries, then disconnects. If the passwords match the sequence continues.

&n

Calls the user back with logon sequence n.

+n

Continue with logon sequence n.

Ďxxxxxí

Sends the string xxxxx to the calling modem. Control characters (including carriage returns) may be entered by preceding the character with a caret.)

"xxxxx"

Waits to receive the string xxxxx from the calling modem.

CALL SECURITY - PASSWORD SELECTION

Type:

Configuration

Format:

AT [cmds] $Hn

(prompt) AS #n: xxxxxxxx, yyyyyyyy, a

Description:

Sets the user ID, password, and permission level for user number n. The xxxxxxxx field indicates the user ID, the yyyyyyyy the password, and the a is the permission level. n must be between 1 and 40.

Permission

Function

a=1

User will be connected if correct user ID and password are entered.

a=2

User will be called back at stored phone number n.

a=3

User will be prompted to enter a phone number at which to be called back. If number is not entered, user will be called back at stored phone number n.

CD, CTS, AND DSR SIGNAL CONNECT TIMER

Type:

Register

Format:

AT [cmds] :T14=n [cmds]

Default:

0

Range:

0 - 255

Unit:

.1 second

Description:

Sets the amount time before or after the connect message that CD, CTS, and DSR will be brought high.

CD, CTS, AND DSR SIGNAL TIMING

Type:

Configuration

Format:

AT [cmds] @Cn [cmds]

Description:

Selects whether the CD, CTS, and DSR signals are brought high before or after the connect message.

Command

Function

í @C0

CD, CTS, and DSR brought high after connect message.

@C1

CD, CTS, and DSR brought high before connect message.

CD SIGNAL

Type:

Configuration

Format:

AT [cmds] &Cn [cmds]

Description:

Controls the behaviour of the CD signal.

Command

Function

&C0

CD forced high.

í &C1

CD normal.

&C2

CD forced high except at disconnect.

CD SIGNAL DELAY

Type:

Configuration

Format:

AT [cmds] :Un [cmds]

Default:

0

Range:

0 - 255

Unit:

12.5 mS

Description:

Selects the amount of time that the modem delays before it brings the CD signal high.

Note:

This command only takes effect if :R is set to 1.

COMMAND SET

Type:

Configuration

Format:

AT [cmds] -Hn [cmds]

Description:

Selects whether the modem will accept commands.

Command

Function

í -H0

Command sets enabled.

-H1

Command sets disabled.

CONNECT SPEED MATCHING

Type:

Configuration

Format:

AT [cmds] %Ln [cmds]

Description:

Selects whether the modem will attempt to match the connect speed of the remote modem.

Command

Function

%L0

Modem will connect at speeds supported by the protocol selected only.

í %L1

Modem will match connect speeds.

%L2

Modem will connect only at current speed.

%L3

Modem will use ITU-T automode to match speeds.

CONNECTION SECURITY - DISPLAY PASSWORD TABLE

Type:

Immediate

Format:

AT [cmds] $N [cmds]

Description:

Displays the list of connection passwords.

CONNECTION SECURITY - PASSWORD SELECTION (ASYNCHRONOUS MODE)

Type:

Configuration

Format:

AT [cmds] %In [cmds]

Description:

Changes connection password number n. n must be between 0 and 4. The user will be prompted to enter the old and new passwords. Passwords must be exactly five characters, case insensitive.

CONNECTION SECURITY - PASSWORD SELECTION (SYNCHRONOUS MODE)

Type:

Configuration

Format:

AT [cmds] %In;xxxxx;yyyyy [cmds]

Description:

Changes connection password number n. n must be between 0 and 4. The xxxxx represents the main security password, and the yyyyy is the new connection password. Passwords must be exactly five characters, case insensitive.

CONNECTION SECURITY - PASSWORD SEND

Type:

Configuration

Format:

AT [cmds] $Mn [cmds]

Description:

Selects how the modem will attempt to connect to a secure system.

Command

Function

í $M0

Modem does not send connection password.

$M1

Modem sends connection password 0. If password does not match any of the remote modemís connection passwords, the modem disconnects.

$M2

Modem sends connection password 0. If password does not match any of the remote modemís connection passwords, the remote modem uses logon sequence 5 to give the user three tries to enter a connection password. If this fails, the modem disconnects.

CTS DELAY TIMER

Type:

Register

Format:

AT [cmds] :T16=n [cmds]

Default:

0

Range:

0 - 255

Unit:

12.5 mS

Description:

Sets the amount of time that the modem waits after a connection has been made and CD and DSR have gone high that the modem brings CTS high.

CTS SIGNAL DELAY

Type:

Configuration

Format:

AT [cmds] :Vn [cmds]

Default:

0

Range:

0 - 255

Unit:

12.5 mS

Description:

Selects the amount of time that the modem delays before it brings the CTS signal high.

DIAL

Type:

Immediate

Format:

AT [cmds] D<#> [cmds]

Description:

Dials the telephone number indicated according to any modifiers included in the string.

Command

Function

DA

MNP10 link will be negotiated at 4800bps for this call.

DJ

MNP10 link will be negotiated at 1200bps for this call.

DK

MNP10 power level adjustment enabled for this call.

DL

Re-dial last number.

DM

Make a LAPM reliable mode connection this call.

DNn

If the dial attempt fails, the modem will attempt to dial stored number n.

DO

This call will be set for a cellular phone. Same as executing the following command: AT \N2 )M1 :E0 @M18 *H1

DP

Pulse dialing enabled.

DQ

Make an LAPM auto-reliable mode connection this call.

DR

Answer mode enabled; originate mode disabled following handshake initiation.

DS

Dial the first stored telephone number.

DT

Tone dialing enabled.

DU

Make a direct mode connection this call.

DV

Make an LAPM or MNP reliable mode connection this call.

DW

Dialing resumed following dial tone detection.

DX

Make an auto-reliable mode connection this call.

DY

Make an MNP reliable mode connection this call.

DZ

Make a normal mode connection this call.

D,

Dialing paused for amount of time specified in S8 register.

D/n

Dial stored telephone number n.

D!

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

D+n

Perform logon sequence n after connecting.

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$

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.

DIAL REPEATEDLY

Type:

Immediate

Format:

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

Description:

Dials the number indicated up to nine times.

DISCONNECT BUFFER DELAY

Type:

Configuration

Format

AT [cmds] %Dn [cmds]

Default:

0

Range:

0-255

Unit:

1 second

Description:

Sets maximum duration allowed during buffered data calls for modem to perform clearing functions after losing carrier-signal or receiving a clear call signal from the remote modem and before initiating hang-up process.

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 FIRMWARE VERSION

Type:

Immediate

Format:

AT [cmds] %V [cmds]

Description:

Displays the current firmware version.

DISPLAY REGISTERS

Type:

Immediate

Format:

AT [cmds] %Rn [cmds]

Description:

Displays all status registers.

Command

Function

%R0

Displays all S registers.

%R1

Displays all :T registers.

DISPLAY ROM BOOTSTRAP VERSION

Type:

Immediate

Format:

AT [cmds] %V [cmds]

Description:

Displays the current ROM bootstrap version.

DISPLAY STORED NUMBERS

Type:

Immediate

Format:

AT [cmds] \F [cmds]

Description:

Displays all stored telephone numbers.

DISPLAY STORED SWITCH CONFIGURATION

Type:

Immediate

Format:

AT [cmds] -X [cmds]

Description:

Displays the stored switch configuration. See the switch settings for more information.

DISPLAY SWITCH SETTINGS

Type:

Immediate

Format:

AT [cmds] %Sn [cmds]

Description:

Displays the settings of SW1 and SW2.

Command

Function

%S0

Display settings of SW1/1-SW1/4.

%S1

Display settings of SW2/1-SW2/8.

DSR DISCONNECT TIMER

Type:

Register

Format:

AT [cmds] :T22=n [cmds]

Default:

34

Range:

0 - 255

Unit:

12.5 mS

Description:

Sets the amount of time that the modem waits after disconnecting to lower DSR.

DSR AND CTS SIGNALS

Type:

Configuration

Format:

AT [cmds] \Dn [cmds]

Description:

Controls the behaviour of the DSR and CTS signals.

Command

Function

í \D0

DSR and CTS forced high.

\D1

CTS follows CD. If &C is not set to 1 then DSR also follows CD, otherwise it follows OH.

\D2

DSR and CTS follow CD.

\D3

DSR normal, CTS forced high.

\D4

DSR and CTS normal.

DSR SIGNAL DELAY

Type:

Configuration

Format:

AT [cmds] :Vn [cmds]

Default:

0

Range:

0 - 255

Unit:

12.5 mS

Description:

Selects the amount of time that the modem delays before it brings the DSR signal high.

ENQ/ACK PROTOCOL

Type:

Configuration

Format:

AT [cmds] \Hn [cmds]

Description:

Selects the Hewlett-Packard ENQ/ACK protocol.

Command

Function

í \H0

ENQ/ACK protocol disabled.

\H1

ENQ/ACK protocol enabled in terminal mode.

\H2

ENQ/ACK protocol enabled in host mode.

ESCAPE AND FLOW CONTROL CHARACTER PARITY CHECKING

Type:

Configuration

Format:

AT [cmds] -Pn [cmds]

Description:

Selects whether the modem checks the parity of incoming escape and flow control characters.

Command

Function

-P0

Parity checking of flow control and escape characters disabled.

-P1

Flow control and escape characters will be processed only if their parity matches serial port.

-P2

Escape characters will be processed only if their parity matches serial port.

EXTENDED RESULT CODES

Type:

Configuration

Format:

AT [cmds] \Vn [cmds]

Description:

Selects what form of result codes will be issued.

Command

Function

\V0

Extended result codes disabled.

\V1

/REL added to reliable mode connections; CONNECT/9600 given for all speeds between 4800bps and 12Kbps.

í \V2

Error correction protocol result codes enabled; CONNECT/9600 given for all speeds between 4800bps and 12Kbps

\V3

/REL added to reliable mode connections when verbose result codes are used; standard numeric result codes are used.

\V4

Error correction protocol result codes enabled.

FIRMWARE UPLOAD

Type:

Immediate

Format:

AT [cmds] ^C1 [cmds]

Description:

Initiates a transfer of a new firmware file.

FIRMWARE UPLOAD

Type:

Immediate

Format:

AT [cmds] ^H [cmds]

Description:

Initiates an ASCII transfer of a new firmware file.

FLOW CONTROL - MODEM TO MODEM

Type:

Configuration

Format:

AT [cmds] \Gn [cmds]

Description:

Selects the type of modem-to-modem flow control used.

Command

Function

í \G0

Flow control disabled.

\G1

Bidirectional flow control enabled.

\G2

Unidirectional flow control enabled.

FLOW CONTROL CHARACTER - XOFF PRIMARY

Type:

Register

Format:

AT [cmds] :T10=n [cmds]

Default:

19

Range:

0-255

Unit:

ASCII

Description:

Sets the primary XOFF character.

FLOW CONTROL CHARACTER - XOFF SECONDARY

Type:

Register

Format:

AT [cmds] :T12=n [cmds]

Default:

251

Range:

0-255

Unit:

ASCII

Description:

Sets the secondary XOFF character.

FLOW CONTROL CHARACTER - XON PRIMARY

Type:

Register

Format:

AT [cmds] :T9=n [cmds]

Default:

17

Range:

0-255

Unit:

ASCII

Description:

Sets the primary XON character.

FLOW CONTROL CHARACTER - XON SECONDARY

Type:

Register

Format:

AT [cmds] :T11=n [cmds]

Default:

249

Range:

0-255

Unit:

ASCII

Description:

Sets the secondary XON character.

ITU-T AUTOMODE TIMER

Type:

Register

Format:

AT [cmds] :T13=n [cmds]

Default:

15

Range:

0 - 255

Unit:

.1 second

Description:

Sets the amount of time the modem attempts to connect with ITU-T automode before disconnecting.

KERMIT AND UUCP PROTOCOLS

Type:

Configuration

Format:

AT [cmds] :Kn [cmds]

Description:

Controls the Kermit and UUCP transfer protocols.

Command

Function

í :K0

Kermit and UUCP protocols disabled.

:K1

Kermit protocol enabled.

:K2

UUCP G protocol enabled.

KERMIT MARK CHARACTER

Type:

Configuration

Format:

AT [cmds] :Qn [cmds]

Default:

1

Range:

0 - 31

Unit:

1 ASCII character

Description:

Sets the character that will be used as the beginning of packet marker when in Kermit protocol mode.

LINE SPEED

Type:

Configuration

Format:

AT [cmds] %Bn [cmds]

Description:

Sets the speed that the modem will communicate with the DTE.

Command

Function

%B75

Sets the serial port to 75bps.

%B300

Sets the serial port to 300bps.

%B600

Sets the serial port to 600bps.

%B1200

Sets the serial port to 1200bps.

%B2400

Sets the serial port to 2400bps.

%B4800

Sets the serial port to 4800bps.

%B7200

Sets the serial port to 7200bps.

%B9600

Sets the serial port to 9600bps.

%B12000

Sets the serial port to 12Kbps.

%B14400

Sets the serial port to 14.4Kbps.

%B19200

Sets the serial port to 19.2Kbps.

%B16800

Sets the serial port to 38.4Kbps.

%B19200

Sets the serial port to 57.6Kbps.

%B21600

Sets the serial port to 21.6Kbps.

%B24000

Sets the serial port to 24Kbps.

%B26400

Sets the serial port to 26.4Kbps.

%B28800

Sets the serial port to 28.8Kbps.

LINE TYPE

Type:

Configuration

Format:

AT [cmds] &Ln [cmds]

Description:

Selects what type of line the modem is connected to and whether it will attempt to automatically re-connect.

Command

Function

í &L0

Modem is connected to switched line.

&L1

Modem is connected to 2-wire leased line.

&L2

Modem is connected to 2-wire leased line. After 6 seconds of receiving no input, the modem goes off-hook and attempts to connect.

LOCAL SERIAL PORT SPEED

Type:

Configuration

Format:

AT [cmds] $Bn [cmds]

Description:

Sets the speed that the modem will communicate with the DTE.

Command

Function

$B75

Sets the serial port to 75bps.

$B300

Sets the serial port to 300bps.

$B600

Sets the serial port to 600bps.

$B1200

Sets the serial port to 1200bps.

$B2400

Sets the serial port to 2400bps.

$B4800

Sets the serial port to 4800bps.

$B9600

Sets the serial port to 9600bps.

$B19200

Sets the serial port to 19.2Kbps.

$B38400

Sets the serial port to 38.4Kbps.

$B57600

Sets the serial port to 57.6Kbps.

$B115200

Sets the serial port to 115.2Kbps.

LOCAL SERIAL PORT SPEED MATCHING

Type:

Configuration

Format:

AT [cmds] %Gn [cmds]

Description:

Selects whether the speed of the modemís port will be changed to match the local serial port, or if the user must do it by hand.

Command

Function

í %G0

Speed changed automatically.

%G1

User must change speed with %B command.

LOCAL SERIAL PORT SPEED RESET

Type:

Configuration/Immediate

Format:

AT [cmds] %Un [cmds]

Description:

Selects when the speed of the serial port may change.

Note:

When the serial port speed is changed from 38.4Kbps, a %U command must be entered for the modem to recognize the new speed.

Command

Function

í %U0

Serial port speed may change at any time. Modem will automatically adjust.

%U1

Modem will only adapt to serial port speed change when %U1 is entered.

%U2

Serial port speed may change at any time. Modem will automatically adjust.

LOGON SEQUENCE DISPLAY

Type:

Configuration

Format:

AT [cmds] $Vn [cmds]

Description:

Controls whether the modem displays the text of the logon sequence.

Command

Function

$V0

Logon sequence not displayed.

í $V1

Logon sequence displayed.

LOOPBACK TEST AND BUSY OUT CONFIGURATION

Type:

Configuration

Format:

AT [cmds] %Hn [cmds]

Description:

Controls the functions of serial port pins 18 and 21.

Command

Function

í %H0

Pins 18 and 21 have no function.

%H1

Busy Out when pin 18 is high, perform local analog loopback test on high DTR.

%H2

Perform local analog loopback test when pin 18 is high, remote digital loopback test when pin 21 is high.

LOW DTR BUSY OUT TIMER

Type:

Register

Format:

AT [cmds] :T18=n [cmds]

Default:

0

Range:

0 - 255

Unit:

1 second

Description:

Sets the amount of time that the modem waits after DTR has gone low to busy out the line. The modem does not busy out the line when :T18 is set to 0.

MANUAL DIAL CONFIGURATION

Type:

Configuration

Format:

AT [cmds] :Dn [cmds]

Description:

Selects when the modem goes off-hook to accept a manually dialed call.

Command

Function

í :D0

Modem does not respond when DTR goes high.

:D1

Modem goes off hook in originate mode when DTR goes high.

:D2

Modem dials first stored number when DTR goes high or when Talk/Data button is pressed

MNP10 1200BPS DISCONNECT

Type:

Register

Format:

AT [cmds] :T19=n [cmds]

Description:

Selects whether the modem will disconnect an idle 1200bps MNP10 connection.

Command

Function

:T19=0

Modem will not disconnect an idle connection.

í :T19=1

Modem will disconnect an idle connection after 2 minutes.

MNP10 FALLBACK

Type:

Configuration

Format:

AT [cmds] -Qn [cmds]

Description:

Allows MNP10 to fall back to speeds slower than 4800bps

Command

Function

-Q0

MNP10 at 2400bps and 1200bps disabled.

-Q1

MNP10 at 2400bps enabled.

í -Q2

MNP10 at 2400bps and 1200bps enabled.

ORIGINATE/ANSWER MODE

Type:

Configuration

Format:

AT [cmds] $On [cmds]

Description:

Selects whether the modem will function in originate or answer mode.

Command

Function

í $O0

Originate/Answer button determines mode.

$O1

Modem operates in originate mode.

$O2

Modem operates in answer mode.

PARALLEL PORT PACKET SIZE

Type:

Register

Format:

AT [cmds] :T29=n [cmds]

Default:

32

Range:

0 - 63

Unit:

1 byte

Description:

Sets the size of packets sent over the parallel port.

PARITY

Type:

Configuration

Format:

AT [cmds] -On [cmds]

Description:

Selects the serial parity that the modem will use.

Command

Function

-O0

Modem will use seven data bits, odd parity.

-O1

Modem will use seven data bits, even parity.

-O2

Modem will use seven data bits, MARK parity.

-O3

Modem will use seven data bits, SPACE parity.

í -O4

Modem will use eight data bits, no parity.

-O5

Modem will use eight data bits, odd parity.

-O6

Modem will use eight data bits, even parity.

-O7

Modem will use eight data bits, MARK parity.

POWER-UP DIAGNOSTICS

Type:

Immediate

Format:

AT [cmds] $D [cmds]

Description:

Performs power-up diagnostic routines. If SW1 and SW2 are all on, performs a reset and diagnostic routines.

PULSES PER DIGIT

Type:

Configuration

Format:

AT [cmds] %Wn [cmds]

Description:

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

Command

Function

í %W0

Digit value is number of pulses generated (0 digit generates 10 pulses).

%W1

Digit value plus one pulses generated (0 digit generates 1 pulse).

%W2

Ten minus digit value pulses generated (0 digit generates 10 pulses).

REMOTE CONFIGURATION

Type:

Configuration

Format:

AT [cmds] *En [cmds]

Description:

Selects whether a modem will accept requests for remote configuration.

Command

Function

í *E0

Remote configuration disabled.

*E1

Remote configuration enabled.

REMOTE CONFIGURATION CHARACTER

Type:

Configuration

Format:

AT [cmds] *Sn [cmds]

Default:

42

Range:

0 - 126

Unit:

1 ASCII character

Description:

Defines the character that the *A command will send four times within the guard time set by S12 to notify the remote modem that a remote configuration session is requested.

REMOTE CONFIGURATION BANNER

Type:

Configuration

Format:

AT [cmds] *I [cmds]

Description:

Sets the banner that the modem displays when a remote configuration session is begun. The user will be prompted to enter the banner, which can be no longer than 25 characters.

REMOTE CONFIGURATION RECOVERY

Type:

Immediate

Format:

AT [cmds] *Q [cmds]

Description:

Recovers changes made during a remote configuration session that were not saved.

REMOTE CONFIGURATION - REDUCE ACCESS

Type:

Immediate

Format:

AT [cmds] *X [cmds]

Description:

Removes a level of access during a remote configuration session. If the user has full access, it will be reduced to read-only; if at read-only, the session will be ended.

REMOTE CONFIGURATION REQUEST

Type:

Immediate

Format:

AT [cmds] *A [cmds]

Description:

Requests to begin a remote configuration session with the remote modem.

Note:

The same function may be accomplished by sending the remote configuration character four times within the guard time set by register S12.

REMOTE CONFIGURATION SAVE

Type:

Immediate

Format:

AT [cmds] *U [cmds]

Description:

Saves the changes that have been made to the remote configuration.

REMOTE CONFIGURATION SECURITY

Type:

Configuration

Format:

AT [cmds] *Rn [cmds]

Description:

Selects whether remote configuration sessions are password protected.

Command

Function

í *R0

Remote configuration security disabled.

*R1

Remote configuration security enabled.

REMOTE CONFIGURATION SECURITY - FULL ACCESS REQUEST

Type:

Immediate

Format:

AT [cmds] *M [cmds]

Description:

Requests the remote modem to grant the user full configuration access. If remote configuration security is enabled, the user will be given three chances to enter the password. If this fails, full access will not be granted.

REMOTE CONFIGURATION SECURITY - PASSWORD SELECTION

Type:

Configuration

Format:

AT [cmds] *Pn

Description:

Changes the passwords for remote configuration. The user will be prompted to enter the old and new passwords. Passwords must be exactly five characters, case insensitive.

Command

Function

*P0

Sets the read-only remote configuration password.

*P1

Sets the full access remote configuration password.

RESULT CODES - MNP

Type:

Configuration

Format:

AT [cmds] -Mn [cmds]

Description:

Selects whether the modem will give MNP result codes.

Command

Function

í -M0

MNP result codes disabled.

-M1

MNP result codes enabled.

RI SIGNAL

Type:

Configuration

Format:

AT [cmds] \Rn [cmds]

Description:

Selects when the RI signal will be cleared from an incoming call.

Command

Function

\R0

RI signal not cleared until the call has disconnected.

í \R1

RI signal cleared when call is answered.

RING SIMULATION

Type:

Configuration

Format:

AT [cmds] :Rn [cmds]

Description:

Selects whether the modem simulates the ring signal an incoming call if the DSTR signal is low.

Command

Function

í :R0

Modem does not simulate a ring signal.

:R1

Modem simulates ring on low DTR and if &D command is not set to 0. After 30 seconds if DTR does not go high, the modem "disconnects" the simulated call. If &D is set to 0 or the DTR signal is high, the modem attempts to connect immediately.

SYNCHRONOUS RTS AND CTS SIGNALS

Type:

Configuration

Format:

AT [cmds] &Rn [cmds]

Description:

Controls the behaviour of the RTS and CTS signals.

Command

Function

í &R0

CTS follows RTS in data mode; RTS is ignored in command mode.

&R1

CTS forced high, RTS is ignored.

&R2

ITU-T V.13 used to simulate half-duplex modes on full-duplex connections.

SECONDARY FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] -Fn [cmds]

Description:

Selects whether the secondary flow control characters will be active.

Command

Function

í -F0

Secondary flow control disabled.

-F1

Secondary flow control enabled.

SECURITY - CLEAR PASSWORDS

Type:

Configuration

Format:

AT [cmds] $Jn [cmds]

Description:

Clears sections of the password lists.

Command

Function

$J0

Clears the call password table and resets the logon sequences to their factory defaults.

$J1

Clears all stored numbers, the call and connection password tables, and resets the logon sequences to their factory defaults.

SECURITY - MAIN PASSWORD (ASYNCHRONOUS MODE)

Type:

Configuration

Format:

AT [cmds] $P [cmds]

Description:

Changes the main security password. The user will be prompted for the old and new passwords. Passwords must be exactly five characters, case insensitive.

SECURITY - MAIN PASSWORD (SYNCHRONOUS MODE)

Type:

Configuration

Format:

AT [cmds] $Pxxxxx;yyyyy; [cmds]

Description:

Changes the main security password. The user will be prompted for the old and new passwords. The xxxxx represents the old password, and the yyyyy is the new password. Passwords must be exactly five characters, case insensitive.

STORE COMPLETE ACTIVE PROFILE

Type:

Immediate

Format:

AT [cmds] *Wn [cmds]

Description:

Writes all the values for the active profile, including S-registers not normally saved, into the non-volatile RAM.

Command

Function

*W0

Write the active profile to stored profile 0

*W1

Write the active profile to stored profile 1

*W2

Write the active profile to stored profile 2

*W3

Write the active profile to stored profile 3

STORE TELEPHONE NUMBER

Type:

Configuration

Format:

AT [cmds] \Pn<#>

Description:

Stores the telephone number indicated at memory location n.

SWITCH CONFIGURATIONS

Type:

Configuration

Format:

AT [cmds] $Kn [cmds]

Description:

Selects whether the modem will use the configurations stored by SW1 and SW2.

Command

Function

í $K0

Switch configurations enabled.

$K1

Switch configurations disabled.

TALK/DATA MODE

Type:

Configuration

Format:

AT [cmds] $Tn [cmds]

Description:

Controls the function of the Talk/Data button and selects which mode the modem is in.

Command

Function

í $T0

Talk/Data button enabled.

$T1

Talk/Data button disabled.

$T2

Toggles talk/data mode.

V.21 AND V.23 ANSWER TONE TIMER

Type:

Register

Format:

AT [cmds] :T3=n [cmds]

Default:

33

Range:

0 - 33

Unit:

.1 second

Description:

Sets the length of time the modem will send the V.21 and V.23 answer tone or wait after the answer tone is sent before attempting to complete the connection.

V.21 NEGOTIATION TIMER

Type:

Register

Format:

AT [cmds] :T2=n [cmds]

Default:

0

Range:

0 - 255

Unit:

.1 second

Description:

Sets the amount of time the modem will attempt to make a V.21 connection before giving up and attempting a V.23 half-duplex connection. If this register is set to 0 the modem will not attempt to make a V.23 connection and disconnects instead.

V.22, V.22bis, AND V.32 NEGOTIATION TIMER

Type:

Register

Format:

AT [cmds] :T0=n [cmds]

Default:

40

Range:

0 - 255

Unit:

.1 second

Description:

Sets the amount of time the modem will attempt to make a V.22, V.22bis, or V.32 connection before giving up and attempting a V.23 split speed connection.

V.23 EQUALIZERS

Type:

Configuration

Format:

AT [cmds] %On [cmds]

Description:

Selects whether the modem will use equalizers when operating in V.23 half-duplex mode.

Command

Function

%O0

V.23 equalizers disabled.

í %O1

V.23 equalizers enabled.

V.23 HALF DUPLEX CARRIER TURNAROUND TIMER

Type:

Register

Format:

AT [cmds] :T4=n [cmds]

Default:

20

Range:

0 - 255

Unit:

12.5 mS

Description:

Sets the amount of time that the modem waits for the remote modem to answer after lowering the carrier signal before it raises the carrier again and begins sending data.

V.23 HALF DUPLEX DCD TIMER

Type:

Register

Format:

AT [cmds] :T6=n [cmds]

Default:

200

Range:

0 - 255

Unit:

1 mS

Description:

Sets the amount of time the modem waits after carrier is raised before it watches for incoming data.

V.23 HALF DUPLEX END-OF-BUFFER CARRIER TIMER

Type:

Register

Format:

AT [cmds] :T5=n [cmds]

Default:

7

Range:

0 - 255

Unit:

12.5 mS

Description:

Sets the amount of time that the modem waits after emptying its transmit buffer before it lowers the carrier signal.

V.23 HALF DUPLEX INACTIVE ANSWER TIMER

Type:

Register

Format:

AT [cmds] :T7=n [cmds]

Default:

60

Range:

0 - 255

Unit:

1 second

Description:

Sets the amount time after a connection is made that if no data is received the modem will disconnect.

V.23 SPLIT SPEED NEGOTIATION TIMER

Type:

Register

Format:

AT [cmds] :T1=n [cmds]

Default:

30

Range:

0 - 255

Unit:

.1 second

Description:

Sets the amount of time the modem will attempt to make a V.23 split speed connection before giving up and attempting a V.23 half-duplex or V.21 connection. If this register is set to 0 the modem will not attempt to make a V.23 connection.

V.32 AND V.32bis TRAINING TIMER

Type:

Register

Format:

AT [cmds] :T17=n [cmds]

Default:

0

Range:

0,1,5 - 32

Unit:

Unidentified

Description:

Sets the amount of time that the modem lets a V.32 or V.32bis connection train before picking a speed. A setting of 0 is equivalent to a setting of 28. Longer training times reduce noise sensitivity.

V.32 TRAINING ON CONNECTION

Type:

Register

Format:

AT [cmds] :T23=n [cmds]

Description:

Selects whether the modem performs a training sequence at the beginning of a V.32 connection.

Command

Function

:T23=0

Modem does not perform training sequence.

:T23=32

Modem performs training sequence.

WORD LENGTH

Type:

Configuration

Format:

AT [cmds] -En [cmds]

Description:

Sets the number of bits the modems will use per data word.

Command

Function

í -E0

Use 10-bit words.

-E1

Use 11-bit words.

 

Proprietary V.25bis Command Set

CLEAR STORED NUMBERS

Type:

Configuration

Format:

CLAnn

Description:

Clears stored number location nn. If no number is given, all memory locations are cleared.

CONNECT

Type:

Result code

Format:

ONLnnnn

Description:

Reports that the modem has connected at nnnn bps.

CONNECTING

Type:

Result code

Format:

CNX

Description:

Reports that the modem is attempting to connect.

DISPLAY CONFIGURATION AND STATISTICS

Type:

Immediate

Format:

RS3

Description:

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

HANG UP

Type:

Immediate

Format:

HUP

Description:

Commands the modem to go on hook.

LOCAL SERIAL PORT SPEED

Type:

Configuration

Format:

CSPnn

Description:

Sets the speed that the modem will communicate with the DTE.

Command

Function

CSP75

Sets the serial port to 75bps.

CSP300

Sets the serial port to 300bps.

CSP600

Sets the serial port to 600bps.

CSP1200

Sets the serial port to 1200bps.

CSP2400

Sets the serial port to 2400bps.

CSP4800

Sets the serial port to 4800bps.

CSP9600

Sets the serial port to 9600bps.

CSP19200

Sets the serial port to 19.2Kbps.

CSP38400

Sets the serial port to 38.4Kbps.

CSP57600

Sets the serial port to 57.6Kbps.

CSP115200

Sets the serial port to 115.2Kbps.

OFF-LINE

Type:

Result code

Format:

OFL

Description:

Reports that the connection has been terminated.

ON-LINE

Type:

Immediate

Format:

RDS

Description:

Instructs the modem to return to on-line state.

REDIAL

Type:

Immediate

Format:

DLN

Description:

Redials the last number dialed.

RESET

Type:

Immediate

Format:

ITN

Description:

Resets the modem to power-up defaults.

STORE ACTIVE PROFILE

Type:

Immediate

Format:

PRC

Description:

Stores the active V.25bis profile in configuration 0.

V.25bis STANDARD SELECTION

Type:

Configuration

Format:

AT@Bn

Description:

Selects which standard the V.25bis commands will follow.

Command

Function

í AT@B0

V.25bis result codes follow ITU-T Red Book. Only V.25bis dial modifiers supported. The only valid result codes are CFI, INC, INV, and VAL.

AT@B1

V.25bis result codes follow ITU-T Blue Book. Only V.25bis dial modifiers supported. The only valid result codes are CFI, CNX, INC, INV, and VAL.

AT@B2

All V.25bis result codes supported. Only V.25bis dial modifiers supported.

AT@B4

V.25bis result codes follow ITU-T Red Book. Only AT dial modifiers supported. The only valid result codes are CFI, INC, INV, and VAL.

AT@B5

V.25bis result codes follow ITU-T Blue Book. Only AT dial modifiers supported. The only valid result codes are CFI, CNX, INC, INV, and VAL.

AT@B6

All V.25bis result codes supported. Only AT dial modifiers supported.