
252 Configuring Digital Private Network Signalling System1
Enterprise Edge 2.0 Programming Operations Guide P0911588 Issue 01
4. Choose Telco Features, Feature assignment.
5. Click Y to enable Call log set.
6. Click Y to enable Vmsg set.
When Vmsg is enabled for a target line on a set, the set logs Message Waiting
Indication/Cancellation received for the corresponding target lines to the user.
Loop avoidance
Errors in the configuration of a network may make it possible for a call to be
misrouted, and arrive at a PBX through which it has already passed. This would
continue, causing a loop which would eventually use up all of the available
channels. The Loop Avoidance service permits counting of DPNSS 1 transit PBXs
and rejecting a call when the count exceeds a predetermined limit.
Programming Loop avoidance
To set Loop avoidance during hardware configuration:
1. Choose Resources, Media Bay Modules, Bus 02 - 07, Modules on Bus,
Module 1.
2. Choose Module type DPNSS.
3. Type a value (0-25) in the Maximum transits box.
The default value is 25.
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