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Disconnecting Data Calls 89
Disconnecting Calls
Automatically Using
Timers
There are a number of ways by which you can configure calls to be disconnected
automatically. You can set timers and disconnect thresholds from the Data Call
Parameters window. Specifically, the parameters you can set are as follows.
Minimum Call Duration
Enter the minimum length of a call that is measured before the ISDN LAN Modem
detects inactivity on the connection and then starts an inactivity timer. The default
is 2 minutes.
Idle Timeout
In the field
Disconnect a data call after how long of an inactivity period?
, enter the
number of seconds after which a call should be disconnected because of inactivity.
Once the minimum call duration is satisfied and then no activity is detected for a
call, this timer is started. To prevent a data call from being disconnected because
of inactivity, enter 0. The default for an automatic call is 30 seconds. The default
for a manual call is 15 minutes.
Bandwidth on Demand
Parameters
You can specify when you want a second B channel to be added automatically
based on the utilization of the first B channel.
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 on the first B channel which must be
reached before the second B channel is allocated. 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. By default the length of time is 10 seconds.
Therefore, this default, in combination with the Connect/Disconnect Threshold
default means that after a B channel reaches over 60% throughput for
10 seconds, a second B channel is added, if not already in use.
Disconnect Delay
This field defines the length of time the ISDN LAN Modem should wait before
removing the second B channel. By default the length of time is 20 seconds.
Therefore, 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.