Abstract: A method for rerouting communication in a unified communications network. The method comprises: receiving, at a disaster plan server, a mapping of an original telephony number to a substitute telephony number; storing, at the disaster plan server, the mapping between the original telephony number and the substitute telephone number as part of a disaster plan; receiving, at a disaster plan server, a request to activate the disaster plan; transmitting, from the disaster plan server to a routing server, a message to activate the disaster plan based on receiving the request to activate the disaster plan; revising, at the routing server, routing details to the original telephony number based on the disaster plan; and routing, at a session border controller, a call to the original telephony number to a new destination based on the revised routing details associated with the disaster plan.

Abstract: A method for rerouting communication in a unified communications network is disclosed. The method includes receiving an inbound call at a first session border controller and determining a redirect number mapped to the inbound call number. The inbound call can be routed to a first call destination based on the redirect number. During the inbound call, a transfer request may be received from a server associated with the first call destination, and a new destination number may be determined for transferring the inbound call. An out-of-band transfer request may be transmitted to one or more servers maintaining the inbound call, and one or more connections associated with the inbound call to the first call destination may be dropped based on the out-of-band transfer request. The inbound call may then be rerouted to a second call destination based on the new destination number identified in the out-of-band transfer request.