3Com OfficeConnect Series, User Manual

Page: 67 / 129

Changing Data Call Parameters
69
Connect/Disconnect Threshold for the Second B Channel
If you specified that you want to use the second B channel only when needed,
indicate the percentage of bandwidth utilization on the first B channel which must
be reached before the second B channel is allocated, or below which the first
B channel must fall before the second B channel is removed. By default the
threshold is 60%.
Connect Delay
This field defines the length of time the ISDN LAN Modem should wait before
adding the second B channel. The default is 10 seconds. This default, in
combination with the Connect/Disconnect Threshold default,
means that after a B channel reaches over 60% throughput for ten seconds, a
second B channel is added, if not in use by another call.
Disconnect Delay
This field defines the length of time the ISDN LAN Modem should wait before
removing the second B channel. The default is 20 seconds. This default, in
combination with the Connect/Disconnect Threshold default, means that if
throughput falls below 60% for 20 seconds, a B channel is removed.
Configuring the Data
Call Parameters
To configure data call parameters, do the following.
1
From the ISDN LAN Modem main page, click Data Call Parameters.
2
Specify the minimum call duration.
3
Specify the inactivity period for an automatic data call.
4
Specify the inactivity period for a manual data call.
5
If you specified that you want to use the second B channel only when needed,
enter the percentage of bandwidth that must be reached on the first B channel
before the second B channel is added or removed.
6
If you specified that you want to use the second B channel only when needed,
enter the length of time the ISDN LAN Modem should wait before adding the
second B channel after the percentage in the Connect/Disconnect Threshold field
is reached.
7
If you specified that you want to use the second B channel only when needed,
enter the length of time the ISDN LAN Modem should wait before removing the
second B channel after it falls below the threshold defined in the
Connect/Disconnect Threshold field.
8
Click Submit .
If you want to password protect the configuration profile of the ISDN LAN
Modem, refer to
“Locking and Unlocking the Configuration. ”