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Chapter 4 - AT Commands, S-Registers, and Result Codes
description for this case). The value of $MB will change if S76 is changed and the value
of S76 will change if $MB is changed.
* 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.
Command: %En
Function: Escape Sequence Options
Values: n = 0–5
Default: %E1 and %E4
Description:By default, the TA responds only to the +++ escape method. However, you
can use the %E command to set the TA to respond only to the <break>
method, to respond to either the +++ or the <break> method, or to ignore
both methods and not escape.
%E0 Modem won’t escape
%E1 +++ escape method
%E2 <break> escape method
%E3 Both +++ and <break> escape methods
%E4 Disable OK response to +++
%E5 Enable OK response to +++
%E1 %E5 Enable +++ method and OK response to +++
%E3 %E5 Enable +++ or <break> method and OK response to +++
Data Call Commands
Use these commands to make or configure data calls.
Command: A
Function: Answer Call
Values: none
Default: none
Description:Forces TA to answer an incoming call. To make the TA autoanswer, set
register S0 to a value higher than 0.
Command: D
Function: Dial
Values: none
Default: none
Description:The D command causes the TA to dial a number (e.g., ATD785-3500 <cr>).
Command: DSn
Function: Dialing a Stored Telephone Number
Values: n = 0–9
Default: n = 0
Description:To dial a stored telephone number, type &DSn in terminal mode, where n is
the location of the number you want to dial. For example, type ATDS3 <cr>
dials a telephone stored in memory register 3 location.
Command: Hn
Function: Hang Up
Values: 0
Default: n = 0
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