Integration of IP multimedia subsystem and a push-to-talk...

Details Integration of IP multimedia subsystem and a push-to-talk... Integration of IP multimedia subsystem and a push-to-talk...

2011-07-19

2011-07-19

Santiago-Cordero, Marivelisse (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

Reexamination Certificate

active

07983228

ABSTRACT:
The present invention relates to converging a PTT Interoperability Infrastructure (PII) and an IP Multimedia Subsystem (IMS). In one embodiment, a common home subscriber server (HSS) and proxy call session control function (P-CSCF) are provided for both the PII and IMS. In another embodiment, a common registrar is used for both the PII and IMS. In still another embodiment, shared media element are provided for the PII and IMS. In yet another embodiment, session control element are shared between the PII and IMS.

REFERENCES:
patent: 6912389 (2005-06-01), Bright et al.
patent: 6915142 (2005-07-01), Wietfeld
patent: 7170863 (2007-01-01), Denman et al.
patent: 2008/0043691 (2008-02-01), Chow et al.

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