KE LOGEM 928, Operation Manual

Page: 76 / 200

76 Operation Manual V.34 - Modems, Version 07/97
AT
Chapter 3
AT&M(n) Selection of Transparent Operation Mode
command parameter/default description
AT&M(n) 0, 1 / 0 asyn./syn. mode
0 asynchronous operation
1 asynchronous command mode,
synchronous transparent mode
AT%D(n) Temporarily Blocked Numbers
The modems can block telephone numbers temporarily for any dial
attempts (command ATD xxx). A list of these numbers can be displayed
with the command AT%D.
Temporarily Blocked Numbers:
Sometimes it occurs that a data connection cannot be established after
the first dial attempt. In those cases several dial attempts might be
necessary. The timeout between the dial attempts for the same telephone
number must be at least 5 secs. between the 1st and 2nd and the 2nd
and 3rd dial attempt. For any further dial attempt the timeout is 60 secs..
The modems give an DELAYED CALL report for any dial attempt that is
made within the timeout period.
Blocked Automatic Dialing:
After 12 unsuccessful dial attempts (with arbitrary telephone numbers)
the modem is blocked completely and sends a BLACKLISTED report.
The BLACKLISTED state is cancelled after approx. 2 hours or whenever
you deactivate your modem and switch it on again.
If this dialing procedure causes any problems with your DTE the mode
can be changed by setting register S81.
AT Commands