Precedence calls to destinations over non-ISDN-PRI trunks scenario

Last Updated : Oct 30, 2012 |
Prolog information
Metadata
Keywords:
Figure: Precedence calls to destinations over non-ISDN-PRI trunks
In the figure, the system uses the service domains and precedence levels to treat calls as follows:
  1. User C makes a routine call to user B and is still connected. The server checks the service domain of the COR of user C, and assigns service domain 2 to the call.
  2. User A, who is on MLPP Server 1, makes a precedence call to user B. Because the call from user A arrives at MLPP Server 2 on a non-ISDN-PRI trunk, Server 2 does not receive the service domain identifier of user A. Server 2 assigns the system service domain 1 to the call.
  3. The server matches the service domain of user C with the service domain of user A.
  4. Because the calls of users A and C are not in the same service domain, calls from user A receive an announcement that says that the MLPP call cannot be completed.
Related links
Precedence Calling