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MTA128ST

MULTI-TECH SYSTEMS, INC.

MTA128ST

Card Type

ISDN TA

Chip Set

Unidentified

I/O Options

Power, 25-pin DTE serial port, ISDN interface (RJ-45),

Auxiliary interface (RJ-11)

ISDN Data Rate

128Kbps

ISDN Modulation Protocol

V.110, V.120, X.75, ML-PPP, SoftBond

Error Correction/Compression

Unidentified

Data Bus

External

CONNECTIONS

Function

Label

Function

Label

Power connector

CN1

Auxiliary interface (RJ-11 connector)

CN3

25-pin serial port

CN2

ISDN interface (RJ-45 connector)

CN4

DIAGNOSTIC LEDS

LED

Color

Status

Condition

TD

Unidentified

Blinking

Data is being transmitted

TD

Unidentified

Off

Data is not being transmitted

RD

Unidentified

Blinking

Data is being received

RD

Unidentified

Off

Data is not being received

LS

Unidentified

On

Link with central office is good

LS

Unidentified

Blinking (slow)

SPIDS have not been verifies with central office

LS

Unidentified

Blinking (fast)

One SPID has been verified with central office

LS

Unidentified

Off

Link with central office is broken

B1

Unidentified

On

Active data connection on B-channel 1

B1

Unidentified

Blinking (slow)

Active analog connection on B-channel 1

B1

Unidentified

Blinking (fast)

Connection is being made

B1

Unidentified

Off

B-channel 1 connection is broken

B2

Unidentified

On

Active data connection on B-channel 2

B2

Unidentified

Blinking (slow)

Active analog connection on B-channel 2

B2

Unidentified

Blinking (fast)

Connection is being made

B2

Unidentified

Off

B-channel 2 connection is broken

TR

Unidentified

On

Data terminal is ready

TR

Unidentified

Off

Data terminal is not ready

OH

Unidentified

On

Device is off-hook

OH

Unidentified

Off

Device is on-hook

128

Unidentified

On

B-channels have been multiplexed into a single 128Kbps link

128

Unidentified

Off

B-channels have not been multiplexed into a single 128Kbps link

Note: LED 128 also indicates what protocol is being used in conjunction with P1, and P2

DATA PROTOCOL LEDS

Protocol

128

P1

P2

V.110

Off

Off

Off

V.120

Off

Off

On

X.75 (1 channel)

Off

On

Off

X.75 (2 channel)

On

On

Off

PPP (1 channel)

Off

On

On

MLPPP (2 channel)

On

On

On

Note: P1 and P2 LEDs blink to indicate active data compression

SUPPORTED COMMAND SET

Basic AT Commands

AT, +++

A, E, H, Q, V

&S, &Z

S Registers

S0, S1, S2, S3, S4, S5, S25

 

Note: See MHI Help File for full command documentation.

Proprietary AT Command Set

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode.

Note: &M1 is not currently supported by TA

Command

Mode

&M0

Asynchronous mode

&M1

Synchronous mode

DATA COMPRESSION

Type:

Configuration

Format:

AT [cmds] &Kn [cmds]

Description:

Enables/disables data compression

Command

Function

í &K0

Data compression disabled

&K1

Data compression enabled

DATA CARRIER DETECT (DCD)

Type:

Configuration

Format:

AT [cmds] &Cn [cmds]

Description:

Selects whether the DCD option is enabled or disabled

Command

Function

&C0

DCD enabled

í &C1

DCD enabled after carrier signal detected

&C2

DCD drops after disconnect for a time specified by register S10

DATA TERMINAL READY (DTR)

Type:

Configuration

Format:

AT [cmds] &Dn [cmds]

Description:

Selects modem response to DTR

Command

Mode

&D0

Ignore transition of DTR status

í &D1

Switch to command mode if DTR is low

&D2

Abort connection if DTR is low, return to command mode and disable auto-answer. If device is off-line, it will neither answer nor dial when DTR is low

&D3

Abort connection and reinitialize on low DTR

DIAL

Type:

Immediate

Format:

AT [cmds] D<#> [cmds]

Description:

Dials ISDN 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

DS=n

Dial stored telephone number n

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

Load quick setup profile 0 (modem standard)

&F1

Load quick setup profile 1 (V.110)

&F2

Load quick setup profile 2 (V.120)

&F3

Load quick setup profile 3 (X.75)

&F4

Load quick setup profile 4 (MLPPP)

FLOW CONTROL

Type:

Configuration

Format:

AT [cmds] &En [cmds]

Description:

Enables flow control options

Command

Function

&E3

Flow control disabled

&E4

RTS to CTS flow control enabled

&E5

XON/XOFF flow control enabled

&E6

When pacing is active, XON/XOFF signals are responded to and discarded by TA

&E7

When pacing is active, XON/XOFF signals are passed through local modem

&E12

XON/XOFF pacing disabled

&E13

XON/XOFF pacing enabled

ON-LINE

Type:

Immediate

Format:

AT [cmds] On [cmds]

Description:

Controls on-line command (data transmission) state options.

Command

Function

O0

On-line command mode with no retraining enabled

LIST ACTIVE PROFILE

Type:

Immediate

Format:

AT [cmds] Ln [cmds]

Description:

Lists active profile

Command

Function

L5

Lists current operating parameters of TA

L6

Lists values currently stored in the S registers

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports product ID

I1

Reports firmware version number

I2

MTS internal use

RTS/CTS

Type:

Configuration

Format:

AT [cmds] &Rn [cmds]

Description:

Selects RTS/CTS options

Command

Function

&R0

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

í &R1

CTS forced high, RTS is ignored.

&R2

CTS is forced high, but drops on disconnect for a time specified by register S10

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

Busy and dial tone detection disabled; result codes 0 - 4 enabled.

X1

Busy and dial tone detection disabled; result codes 0 - 5 & 10 - 14, 17 - 19, 28, & 32 enabled.

X2

Extended result codes enabled

SOFT RESET

Type:

Immediate

Format:

AT [cmds] Zn [cmds]

Description:

Restores modem profiles previously saved in non-volatile RAM using the &W command.

STORE ACTIVE PROFILE

Type:

Configuration

Format:

AT [cmds] &Wn [cmds]

Description:

Writes the values for the active profile into the non-volatile RAM

Command

Function

&W0

Stores all current AT commands and S-register values in NVRAM

í &W1

Deletes custom settings on reset or power down. Factory default profile used

Extended AT Command Set

ESCAPE SEQUENCE OPTIONS

Type:

Configuration

Format:

AT [cmds] %En [cmds]

Description:

Controls escape sequence options

Note:

%E1 or %E3 may be entered in conjunction with %E5

Command

Function

%E0

Escape disabled

%E1

+++ escape option enabled

%E2

<BREAK> escape option enabled

%E3

+++ and <BREAK> escape options enabled

%E4

OK response to +++ disabled

%E5

OK response to +++ enabled

SENDING METHOD

Type:

Configuration

Format:

AT [cmds] %A97=n [cmds]

Description:

Selects whether a "sending complete indication" signal is sent or overlap sending is implemented

Command

Function

%A97=0

En bloc sending during cal SETUP enabled

%A97=1

Overlap sending during call SETUP enabled

SERIAL PORT MODE

Type:

Configuration

Format:

AT [cmds] %Sn [cmds]

Description:

Selects serial port speed

Command

Function

%S0

Automatic speed selection enabled

%S1

460.8Kbs

Special Commands

CONFIGURATION

Type:

Configuration

Format

AT [cmds] @CONFIG [cmds]

Description:

Starts the internal configuration utility. Command must be entered in terminal mode

DATA DIRECTORY NUMBER

Type:

Configuration

Format:

AT [cmds] !N1=n [cmds]

Range:

0 24

Unit:

0 - 9, *, #

Description:

Sets the directory number (DN) for the data channel

DATA SPID

Type:

Configuration

Format:

AT [cmds] !C6=n [cmds]

Range:

0 20

Unit:

ASCII

Description:

Specifies the data service profile identifier assigned by the ISDN provider

DATA TEI

Type:

Configuration

Format:

AT [cmds] !D3=n [cmds]

Range:

0 - 63, 240, 241

Unit:

ASCII

Description:

Sets the terminal endpoint identifier for the data channel. 240 (default) sets to automatic. 241 disables

DISPLAY NETWORK CONFIGURATION

Type:

Immediate

Format:

AT [cmds] !L [cmds]

Description:

Displays the current DN, SPID, TEI, data protocol; and switch type

EMBEDDED PROTOCOL ANALYZER

Type:

Configuration

Format:

AT [cmds] >Dn [cmds]

Description:

Analyzes various protocols

Command

Function

>D0

Display B-channel traffic, decoded as V.120

>D1

Display D-channel traffic, decoding layers 2 & 3

>D2

Display D-channel traffic, decoding layers 2

>D3

Display D-channel traffic, decoding layers 3

>D4

Display B-channel traffic, decoded as X.75

>D98

Embedded protocol analyzer disabled

>D99

Embedded protocol analyzer enabled

ISDN D-CHANNEL PROTOCOL

Type:

Configuration

Format:

AT [cmds] !C0=n [cmds]

Description:

Selects network switch type

Command

Function

!C0=0

AT&T 5ESS

!C0=1

Northern Telecom DMS-100

í !C0=2

Euro-ISDN NET3

!C0=3

1TR6

!C0=4

INS64

!C0=5

US NI-1

!C0=6

VN4

PERSISTANT DTR DIALING

Type:

Configuration

Format:

AT [cmds] $Dn [cmds]

Description:

Enables/disables persistent DTR dialing

Command

Function

í $D0

PDD disabled

$D1

PDD enabled

POWER UP DATA BITS

Type:

Configuration

Format

AT [cmds] @P4=n [cmds]

Description:

Sets the data bits at power up

Command

Function

@P4=7

7 bits

@P4=8

8 bits

POWER UP PARITY

Type:

Configuration

Format

AT [cmds] @P3=n [cmds]

Description:

Sets the parity at power up

Command

Function

@P3=0

Odd parity enabled

@P3=1

Even parity enabled

@P3=2

Mark parity enabled

@P3=3

Space parity enabled

@P3=4

Parity disabled

POWER UP SPEED

Type:

Configuration

Format

AT [cmds] $SBn [cmds]

Description:

Sets the serial speed negotiated when the TA powers up. If the speed is set to 460.8Kbps than the %S1 mode is initialized. %S1 mode is used for any other rate.

Command

Function

$SB3

300bps

$SB12

1200bps

$SB24

2400bps

$SB48

4800bps

$SB96

9600bps

$SB192

19.2Kbps

$SB384

38.4Kbps

$SB576

57.6Kbps

$SB1152

115.2Kbps

$SB2304

230.4Kbps

$SB3608

460.8Kbps

POWER UP STOP BITS

Type:

Configuration

Format

AT [cmds] @P6=n [cmds]

Description:

Sets the data bits at power up

Command

Function

@P6=1

1 stop bit

@P6=2

2 stop bits

RATE ADAPTION PROTOCOL

Type:

Configuration

Format:

AT [cmds] !Z=n [cmds]

Description:

Select rate adaption protocol used to communicate with another TA

Command

Function

!Z=5

V.120

!Z=6

V.110

!Z=9

ML-PPP

!Z=12

X.75

RECEIVE GAIN

Type:

Configuration

Format:

AT [cmds] !RXGn [cmds]

Range:

0 - 10

Unit:

ASCII

Description:

Controls the speaker level of an analog telephone device connected to the AUX port

TRANSMIT GAIN

Type:

Configuration

Format:

AT [cmds] !TXGn [cmds]

Range:

0 - 4

Unit:

ASCII

Description:

Controls microphone amplification of an analog telephone device connected to the AUX port

Note: Do not adjust the gain unless it is absolutely necessary. It is very high at non-zero levels.

VOICE DIRECTORY NUMBER

Type:

Configuration

Format:

AT [cmds] *!N1=n [cmds]

Range:

0 - 24

Unit:

0 - 9, *, #

Description:

Sets the directory number (DN) for the voice channel

VOICE SPID

Type:

Configuration

Format:

AT [cmds] *!C6=n [cmds]

Range:

0 - 20

Unit:

ASCII

Description:

Specifies the voice service profile identifier assigned by the ISDN provider

VOICE TEI

Type:

Configuration

Format:

AT [cmds] *!D3=n [cmds]

Range:

0 - 63, 240, 241

Unit:

ASCII

Description:

Sets the terminal endpoint identifier for the voice channel. 240 (default) sets to automatic. 241 disables

XOFF SENDING

Type:

Configuration

Format:

AT [cmds] #Xn [cmds]

Description:

Determines whether single or multiple XOFF characters are sent

Command

Function

í #X0

One XOFF character is sent until the buffer reaches the XON level

#X1

Multiple XOFF characters are sent for every character received after buffer reaches full level.

S(Status) Registers

AUTO-PROTOCOL DETECTION

Type:

Register

Format

AT [cmds] S52=n [cmds]

Description:

Enables/disables mechanism for identifying type of protocol

Command

Function

S52=0

Auto-protocol detection disabled

í S52=1

Auto-protocol detection enabled

CALLER LINE ID

Type:

Register

Format

AT [cmds] S50=n [cmds]

Description:

Enables/disables mechanism for identifying the two endpoints of a connection

Command

Function

S50=0

CLI feature disabled

í S50=1

CLI feature enabled

CARRIER LOSS RESPONSE TIME

Type:

Register

Format

AT [cmds] S10=n [cmds]

Range:

0-255

Unit:

.05 second

Description:

Maximum time allowed by the modem after losing the carrier signal and prior to initiating hang-up process.

ESCAPE SEQUENCE

Type:

Register

Format:

AT [cmds] S32=n [cmds]

Range:

0-255

Unit:

.1sec

Description:

Maximum time allowed by the modem in an escape sequence

MAXIMUM FRAME SIZE

Type:

Register

Format:

AT [cmds] S53=n [cmds]

Range:

0-2048

Unit:

ASCII

Description:

Sets the maximum frame size of data frames in X.75 mode

NO CARRIER TIME-OUT

Type:

Register

Format

AT [cmds] S7=n [cmds]

Range:

0-255

Unit:

1 second

Description:

Maximum wait time the modem uses after dialing to detect a carrier signal from the remote modem for both originating and answering calls. Default=45