Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-08-31
2008-05-27
Urban, Edward F. (Department: 2618)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S552100
Reexamination Certificate
active
07379735
ABSTRACT:
A system (20) of establishing a rapid PTT call setup in a multi-wireless network environment, can include a first wireless network (24and26) such as an iDEN network optimized for rapid push-to-talk call setups in typically less than one second and a second wireless network (23and27) such as a CDMA wireless network operatively coupled to the first wireless network. The system can further include a communication protocol among an originating mobile subscriber unit (22), a target mobile subscriber unit (28), the first wireless network, and the second wireless network, where the first wireless network and the second wireless network receive a request for a PTT session and the PTT session is set up on the second wireless network using the first wireless network. The system can further include a PTT server (25) operatively coupled to the first wireless network and the second wireless network.
REFERENCES:
patent: 2004/0121791 (2004-06-01), May et al.
patent: 2004/0203469 (2004-10-01), Patel et al.
patent: 2004/0218555 (2004-11-01), Chen et al.
patent: 2004/0219940 (2004-11-01), Kong et al.
patent: 2005/0014506 (2005-01-01), Thorson et al.
patent: 2005/0085253 (2005-04-01), Mansour
Klug Keith M.
Uehara Glen S.
Villa Fred R.
Motorola Inc.
Nguyen Tu
Urban Edward F.
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