At commands 17 – Westermo MR Series User Manual
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AT Commands
17
D Dial
17.1
The ATD command causes the unit to initiate an ISDN call. The format of the command depends on
the mode of operation.
When using the unit 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 unit will issue the CONNECT result
code and switch to on-line mode.
Dialling with a Specifi ed Sub-Address
17.1.1
The ATD command may also be used to route a call to an ISDN sub-address by following the tel-
ephone with the letter S and the required sub-address. The sub-address may be up to 15 digits long.
For example:
atd01234567890s003
Dialling Stored Numbers
17.1.2
To dial numbers that have previously been stored within the unit 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
17.1.3
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.
H Hang-up
17.2
The ATH command is used to terminate an ISDN call. If the unit is still on-line you must first switch
back to command mode by entering the escape sequence, i.e. +++, wait 1 second and then enter an
AT command or just AT
After entering the ATH command the call will be disconnected and the NO CARRIER result will be
issued.
Z Reset
17.3
The ATZ command is used to load one of the stored profiles for the active ASY port. The command
is issued in the format ATZn where n is the number (0 or 1) of the ASY port profile you wish to
load.