DIVA T/A ISDN Modem User’s Guide ◆ Page 66
The DIVA Terminal Adapters Program forMacintosh
ISDN Cost
Reduction
Timers
This option only applies if your ISDN connection protocol is set to ‘Multilink PPP’.
Note: You must activate ‘BACP/BOD’ before setting the intervals.
Set these intervals to ensure your second B-channel is used most economically.
‘Initial Billing Interval’: Specifies the minimum time a B-channel can remain
open (in seconds). For example, if the value is set to 600, a channel, once open,
will remain open for at least 10 minutes (600 seconds).
If you are charged a fixed amount for the first x seconds of a call (e.g. 300
seconds), a good rule of thumb is to set the timer to this value, e.g. 300. For an
example of setting the interval under more advanced conditions, see “Billing
Interval Example” on page 137.
Setting the timer to 0 disables it. The Billing Interval is also, effectively disabled.
Default: 60 seconds.
‘Billing Interval’: Specifies the time interval your Service Provider uses to bill
usage of your ISDN line (in seconds). For example if your Provider charges $Y per
60 seconds, enter 60.
Setting the timer to 0 disables it. The Initial Billing Interval remains in effect.
Default: 60 seconds.
1st B-channel ‘Delay before opening’: Specifies the amount of time (in seconds) the
throughput on your D-channel must exceed the Opening Threshold before the
1st B-channel is added to the AO/DI connection.
For example, if you specify 5 seconds, and the Opening Threshold is 70%, once
the throughput on the D-channel reaches 70%, there will be a delay of 5 seconds
before the 1st B-channel is added to the AO/DI connection. If the throughput
drops below 70% during the 5 seconds, the 1st B-channel will not be added to
the connection.
‘Opening Threshold’: Specifies the threshold (percentage) that the throughput
on your D-channel must exceed before the 1st B-channel is added to the AO/DI
connection.
‘Closing Threshold’: Specifies the threshold (percentage) that the throughput
on your B-channel must be below before the 1st B-channel is dropped from the
AO/DI connection.
This option is only available with AO/DI support.
Parameter Description