Use the command-line interface AT commands
Digi TransPort WR Routers User Guide 114
D command: Dial a call
The ATD command causes the router to initiate an ISDN call. The format of the command depends
on the mode of operation.
When using the router to make data calls on one of the ISDN B-channels, enter the ATD command
followed by the telephone number. For example, to dial 01234 567890 enter the command:
atd01234567890
Spaces in the number are ignored. If the call is successful the router will issue the CONNECT result
code and switch to on-line mode.
Dialing with a specified sub-address
You can use the ATD command to route a call to an ISDN sub-address by following the telephone
with the letter S and the required sub-address. The sub-address can be up to 15 digits long. For
example:
atd01234567890s003
Dialing stored numbers
To dial numbers that have previously been stored within the router using the AT&Z command,
insert the S= modifier within the dial string. For example, to dial stored number 3, use the
command:
atds=3
Combining ISDN and X.25 calls
A further option for the ATD command for X.25 applications is to combine the ISDN call and the
subsequent X.25 CALL in the same command. To do this, follow the telephone number with the =
symbol and the X.25 call string. For example:
atd01234 567890=123456789
Pressing any key while the ATD command is being executed will abort the call attempt.
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