Patent ID: 8964524
Filing Date: 2015-02-24
Classification: H04L

Abstract:
1. A method comprising: a receiving a Session Initiation Protocol (SIP) message which is being routed through a plurality of intermediate entities constituting nodes of a signaling path in a telecommunications network; inserting a bypass indicator into a routing header of the SIP message, wherein the bypass indicator indicates whether an intermediate entity of the plurality of intermediate entities in the signaling path can be bypassed in an event that the intermediate entity becomes unavailable to route the SIP message; and receiving a SIP message by another intermediate entity in the signaling path and, if said intermediate entity is unavailable to route the received SIP message and the received SIP message contains a routing header with a bypass indicator that indicates said intermediate entity can be bypassed, eliminating an identifier of said unavailable intermediate entity in the routing header of the received SIP message, wherein the routing header of the received SIP message contains a list of identifiers of the intermediate entities along the signaling path through which the received SIP message will pass.