Patent ID: 7983228

Claim:
A network architecture for converging a Push-To-Talk Interoperability Infrastructure (PII) network architecture and an IP Multimedia Subsystem (IMS) network architecture, comprising: a Push-To-Talk Interoperability Infrastructure (PII) network architecture including: a PII registrar element; a PII session control element coupled to the PII registrar element; and a PII media element coupled to the PII session control element; an IP Multimedia Subsystem (IMS) network architecture including: an IMS registrar element; an IMS session control element coupled to the IMS registrar element; and an IMS media element coupled to the IMS session control element; wherein the PII network architecture registrar element, session control element, and media element are not coupled to the IMS network architecture registrar element, session control element, and media element; a home subscriber server (HSS) containing a database of subscriber data for subscribers of the PII network architecture and the IMS network architecture coupled to the PII network architecture and the IMS network architecture, wherein the database of subscriber data is shared by the PII network architecture and the IMS network architecture; and an edge proxy coupled to the PII network architecture and the IMS network architecture and used by both the PII network architecture and the IMS network architecture.