Always On / Dynamic ISDN ATCommands
DIVA T/A ISDN Modem Reference Guide ◆ Page 51
AT!X1 3=n Delay Before Opening 2nd B-channel (with BACP enabled). Specifies the amount
of time (in seconds) the throughput on your 1st B-channel must exceed the Opening
Threshold (AT!X14=n) before the 2nd B-channel is added to the AO/DI connection.
For example, if you specify 5 seconds, and the Opening Threshold is 70%
(AT!X14=70), once the throughput on the 1st B-channel reaches 70%, there will be a
delay of 5 seconds before the 2nd B-channel is added to the AO/DI connection. If the
throughput drops below 70% during the 5 seconds, the 2nd B-channel will not be
added to the connection.
Range: 0 to 65535.
Default: 5 seconds. Note that if the ISDN Switch Type is set to Singapore (AT!C1=6)
then the default is 60 seconds.
Note: The description above applies only if BACP is enabled; for a description of
AT!X13=n when BACP is disabled, see page47.
AT!X1 4=n 2nd B-channel Opening Threshold. Specifies the threshold (percentage) that the
throughput on your 1st B-channel must exceed before the 2nd B-channel is added to
the AO/DI connection.
Range: 0 to 100.
Default: 70.
AT!X1 5=n 2nd B-channel Closing Threshold. Specifies the threshold (percentage) that the
throughput on your 2nd B-channel connection must be below before the 2nd
B-channel is dropped from the AO/DI connection.
Range: 0 to 100.
Default: 40.
AT!X1 6=n Strips Area Code from Numbers. Tells BACP to drop the area code from phone
numbers received from the remote peer.
For example, if you are dialing a number with the same area code, if you specify
AT!X16=1, the area code is dropped from the number.
n=0 Off (default).
n=1 On.
AT!X1 7=n Specify X.25 Transmit Queue Threshold. When the queued data goes over this
limit, for the period of time specified with AT!X10, the 1st B-channel will be added to
the AO/DI connection.
For example, if 1000 bytes are queued in the X.25 link, the 1st B-channel connection
will be opened after the delay specified by AT!X10.
Range: 0 to 65535
Default: 1000 bytes.