Page 146 of 258 Alternative Call Routing for Network Bandwidth Management
Alternative Call Routing for NBWM feature used in All Calls mode
The situations illustrated in Figure 42 on page 134, Figure 44 on page 138, and Figure 46 on page 142 can also apply to the operation of the feature when it is active all the time, regardless of available bandwidth.
For an example of this, the information below applies to Figure 42 on page 134 when all calls are alternately routed.
The configuration and provisioning for the All Calls mode is exactly the same as the regular Alternative Call Routing for NBWM feature except that the Alternate Routing for All Calls option is selected in overlay 117 or Element Manager.
Operating parameters
This feature applies to all CS 1000 systems.
This feature applies to
This feature is configurable for main office and branch office zones, not virtual trunk zones.
The operation of the Alternative Call Routing for NBWM feature depends on the proper configuration of the Network Bandwidth Management feature. If Network Bandwidth Management encounters insufficient bandwidth for an interzone call, the Alternative Call Routing for NBWM feature attempts to
Configure the Voice Gateway bandwidth zone and the IP Phone bandwidth zone with the same number on each Call Server.
For alternately routed calls that originate at the branch office, the network administrator must decide whether to program the main office to use conventional PSTN or TIE/MCDN routes that physically terminate at the branch office or to use conventional trunks at the main office. Outpulsed digits on the PSTN trunks must be in the format required by the Central Office serving the chosen system. For example, if the two systems are served
