Avaya Inc.

Milos Pujić

Harsh V Mendiratta

Joel M Ezell

Kurt H Haserodt

Christopher David Baldwin

Dan Gluskin

Benny Rodrig

James Douglas Free

Mark T Rolfs

Amerjit Sandhu

A communication system, method, and components are described. Specifically, a communication system having the ability to facilitate a semi-attended transfer in SIP for an IP-Multimedia Subsystem (IMS) environment is disclosed. The semi-attended transfer is possible even though one or more Back-to-Back User Agents are positioned between users engaged in the semi-attended transfer.

Implementation of the semi-attended transfer in SIP for IP-multimedia subsystem environments

Methods and systems for supporting the alternate routing of calls between endpoints, such as session initiation protocol (SIP) endpoints, are provided. An inner gateway alternate route (IGAR) application is invoked when the primary, Internet protocol, communication network is overloaded or otherwise unable to handle a call. The IGAR application assigns incoming and outgoing trunks, and serves as a contact point for session managers in routing the trunk call.

Alternate routing of voice calls in a heavily loaded SIP network

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Belleville, Canada

Milos Pujić