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We have the following scenario:
1. Collected the logs from the LMT
2. By analyzing the logs it has been identified that the calls were not being established due to a trunkgroup restriction:
After analyzing the logs it has been concluded that the issue was caused by the Trunk rights restriction.
The nature of the call was [DDD] while the trunkgroup 2xxx through which the call was passing was having only [INTER/LOCAL] rights.
In order to resolve the issue the following command should be executed:
config modify trunkgroup no 2xxx restrict yes outgoingright inter&local&ddd