MultiModemISDN User Guide

!Z=6

V.110 protocol*

!Z=9

ML-PPP protocol

!Z=12

X.75 protocol

*The MTA128ST-USB is manufactured in two builds. To determine the build of your terminal adapter (TA), issue the ATI2 command in a terminal window. If the TA responds to the command with MTA128ST- USB, then it supports V.110. If your TA resonds to the ATI2 command with MTA128ST-USB-RC, V.110 support is not available. The MTA128ST-USB-RC will return ERROR in response to the !Z=6 command.

USB Port Configuration Commands

Use the following commands to control the interaction between the MTA128ST-USB and the computer that is connected to it.

Command:

En

Function:

Command Mode Echo

Values:

n = 0 or 1

Default:

E1 (Echo on)

Description: When you enter commands on the keyboard, the TA echoes the characters

 

back to the computer or terminal where they display on the monitor. Use E to

 

turn this feature on and off.

 

E0

Echo off

 

E1

Echo on

Command:

L5 and L6

Function:

List Active Profile

Values:

n = 5 or 6

Default:

none

 

Description:Lists current operating parameters of the TA, which is useful when changing

 

communications software or changing default settings. ATL5 lists AT

 

command parameters, and ATL6 lists values currently stored in the S-

 

registers. (See S-Registersin this chapter for more information).

Command:

L8

Function:

Display ISDN Status

Values:

none

Default:

none

Description:Displays low level ISDN status for determining whether the physical layer is

 

ready, whether the data link layer is ready, what caused a previous

 

disconnect (Busy, Congestion, Normal Call Clearing, etc.) , and whether (for

 

North American switch types) SPID numbers have been set up properly

 

(SPID INCORRECT or SPID CORRECT).

Command: Qn

 

Function:

Enable/Disable Result Codes

Values:

n = 0, 1, or 2

Default:

Q0 (Enable result codes)

Description: Controls whether the TA sends result codes to the computer. (Use V to

 

select result code format.)

 

Q0

Enable result codes.

 

Q1

Disable result codes (quiet mode) for applications such as computer-

 

 

controlled auto dialing.

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AC International MTA128ST-USB manual =12, L5 and L6