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94 MultiModemISI Hybrid Series, ISIHI-2S
Chapter 5—TERMINAL ADAPTER AT Commands, S-Registers, Result Codes
Terminal Adapter
Command Implementation
AT Attention Code
Values: n/a
Default: n/a
AT precedes all command strings except the
A/
command and escape codes.
RETURN
Command Execution
Values: n/a
Default: n/a
Press the RETURN (ENTER) key to execute a command. The RETURN key is
sometimes abbreviated <cr> in command examples.
+++AT<cr>
In-Band Escape Code
Values: ASCII
Default: + (43)
Causes the TA to enter command mode without disconnecting the call when it is online
with a remote device. The default escape code is three
+
characters, followed by
AT
, up
to 80 command characters, and a RETURN (press ENTER). The TA escapes to
command mode, executes any commands in the string, and then remains in command
mode. Use the
S2=
z command to change the escape character.
<break>AT<cr> Out-of-Band Escape Code
Values: n/a
Default: n/a
Places the TA in command mode while remaining online. Enter a break signal, the letters
AT,
up to 80 command characters, and a RETURN (press ENTER).
Switch Configuration Commands
Use the following
commands to select your network switch type (e.g., Northern Telecom
DMS-100) and to specify other information required to make an ISDN connection.
%A97=n
Dialing Method
Values: n = 0 or 1
Default:
%A97=0
(En bloc)
Standardized ISDN signalling protocols such as DSS1, DSS2, and SS7 support a
sending complete indication
, a signal that no more digits will follow. However, adding
such a signal to a telephone number is often impractical; therefore, many private
networks send the number of a called party by using a procedure called
overlap sending
,
in which no sending complete indication is sent. Computer users, however, can
automatically append the
sending complete indication
to the telephone number by
choosing the
en bloc
method of sending, which results in faster call setup. Use the
%A97=
command to select between the two methods.
%A97=0
En bloc sending during call SETUP
%A97=1
Overlap sending during call SETUP