Endpoints of the Lotus Sametime Unified Telephony dial a prefix access code to access subscribers in the PSTN. The traffic to the gateways is load balanced by not prioritizing the routes for the “Boca Local” destination. When a gateway returns a rerouting SIP response code, the call is rerouted to another route (that is, gateway) of the “Boca Local” destination.
Parent topic: Survivability Overview
Rerouting based on a Set of SIP Response Codes