Page 148 of 258 Alternative Call Routing for Network Bandwidth Management
Feature interactions
Call Redirections
The Alternative Call Routing for NBWM feature works with Call Transfer, Call Forward All Calls, and Conference. Redirection operates as if the user dialed the ALTPrefix manually.
Multiple Appearance Directory Number
If telephone endpoints sharing Multiple Appearance DNs (MADNs) are configured in different zones, then this feature handles the call in the same way that Network Bandwidth Management does. The zone number of the telephone that is prime for the DN is the only zone considered.
Network Bandwidth Management
The Alternative Call Routing for NBWM feature does not detect insufficient bandwidth. It reacts to insufficient bandwidth detected by the Network Bandwidth Management and Adaptive Network Bandwidth Management features. For more information on these two features, refer to IP Peer Networking: Installation and Configuration
Network Class of Service
The telephone calling must have an NCOS assigned that allows the call to use the alternate route.
Network Routing Service (NRS)
Both the main office and branch office must be registered on the Nortel NRS for tandem routing to work for main office to branch office tandeming.
Trunk Route Optimization (TRO)
Disable Trunk Route Optimization between the branch office (or SRG) and the main office in order to allow the tandeming required for the feature to work.
Virtual Office
It is not possible to determine the real Bandwidth Zone of a telephone logged in as a Virtual Office telephone.
