Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1995-11-14
1999-12-28
Bost, Dwayne D.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455445, H04Q 724
Patent
active
060093269
ABSTRACT:
An anchor RS acts as the single interface between the switched telephone network and the wireless communications system throughout an entire call, even if the subscriber unit travels to different radio systems during the call. This allows (1) the signaling to set up the connections between the anchor and target RPCUs; and (2) the maintenance information for the call to remain in the anchor RPCU, which is connected to the original switch. This avoids tying up network switches with exchanging signals and call maintenance information about service features, thus resulting in a substantial "savings" in valuable telephone network resources. Also, existing switches do not need to be replaced or reconfigured to accommodate this hand over method.
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ISDN User-Network Interface--Data Link Layer Specification, Recommendation Q.921, CCITT Blue Book 1988.
Circuit Switched Digital Capability Network Access Interface Specifications--Switched Network Compatibility & Performance Specifications for 2-Wire Connection to the Digital Public Switched Network, Bellcore TR-880-22135-84-01, Issue 1, Jul. 1984.
Roder Paul William
Ulema Mehmet
Bost Dwayne D.
Giordano Joseph
Telecordia Technologies, Inc.
Wyche Myron K.
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