MultiModemISDN User Guide

Command:

!Z=n

Function:

Rate Adaption Protocol

Values:

n = 5, 6, 9, or 12

Default:

!Z=9 (ML-PPP)

Description: Selects rate adaption protocol used to communicate with another TA. The local and remote terminal adapters must be set to the same protocol for communication to take place.

!Z=5

V.120 protocol

!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.

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