144 Alternative Call Routing for Network Bandwidth ManagementThis feature does not apply to virtual trunk calls. It only applies tostation-to-station calls, and routes them over the PSTN or MCDN network.Virtual Trunk calls already have this feature and can be alternately routedusing traditional methods (such as NARS), which are outside the scope ofthis feature.Alternative Call Routing for NBWM does not apply to users who areregistered in local mode to the Branch Office.Calls that are in an ACD queue cannot be alternately routed by this feature.These calls remain in the ACD queue until an ACD agent and sufficientbandwidth are available.Music on Hold is not affected by this feature.A QoS0038 message prints out when insufficient bandwidth is detectedbetween two zones. A QoS0039 message prints out when the AlternativeCall Routing for NBWM feature is invoked.If a user at a Branch Office attempts to make a conference call, AlternativeCall Routing for NBWM is not invoked.Feature interactionsCall RedirectionsThe Alternative Call Routing for NBWM feature works with Call Transfer,Call Forward All Calls, and Conference. Redirection operates as if the userdialed the ALTPrefix manually.Multiple Appearance Directory NumberIf telephone endpoints sharing Multiple Appearance DNs (MADN) areconfigured in different zones, then this feature handles the call in the sameway that Network Bandwidth Management does. The zone number of thetelephone that is prime for the DN is the only zone considered.Network Bandwidth ManagementThe Alternative Call Routing for NBWM feature does not detect insufficientbandwidth. It reacts to insufficient bandwidth detected by the NetworkBandwidth Management and Adaptive Network Bandwidth Managementfeatures. For more information on these two features, refer to IP PeerNetworking Installation and Commissioning (NN43001-313) .Network Class of ServiceThe telephone calling must have an NCOS assigned that allows the callto use the alternate route.Nortel Communication Server 1000Branch Office Installation and CommissioningNN43001-314 01.02 StandardRelease 5.0 20 June 2007Copyright © 2007, Nortel Networks.
