Patent ID: 8681960
Filing Date: 2014-03-25
Classification: H04L,H04M

Abstract:
1. A method for providing access to call origination features contained in an internet protocol multimedia subsystem (IMS) for a subscriber of the IMS who originates a call request from customer premises equipment (CPE) outside of the IMS, the method comprising the steps of: receiving the call request at a public service identity (PSI) server that resides within the IMS where the PSI server has a phone number to which the call request is routed; retrieving by the PSI server an IMS internal desk number based on a number of the CPE received as part of the call request; transmitting a first modified call request from the PSI server to a telephony application server (TAS) where the first modified call request identifies the IMS internal desk number as a request universal resource identity (RURI); performing, by the TAS, call origination treatment as specified by the subscriber based on the first modified call request; processing the first modified call request by the TAS to form a second modified call request in which the RURI is a number of a destination party and a P-asserted identity (PAID) is the IMS internal desk number such that the second modified call request appears as if it has been originally initiated from a phone within the IMS; transmitting the second modified call request to a node in the IMS for further processing and ultimately termination at the destination party.