Specifications

94 MultiModemISI Hybrid Series, ISIHI-2S/2U
Chapter 5—TERMINAL ADAPTER AT Commands, S-Registers, Result Codes
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 carry out a command. The RETURN key is
sometimes abbreviated <cr> in command examples.
+++AT<cr> In-Band Escape Code
Values: ASCII
Default: + (43)
Sets 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 sending
complete indication, a signal that no more digits will follow. Adding such a signal to a
telephone number is often impractical; therefore, many private networks send the number
of a called party using a procedure called overlap sending, in which no sending complete
indication is sent. Computer users 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