Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-04-19
2005-04-19
Milord, Marceau (Department: 2682)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S556100, C455S554100, C455S426100, C455S500000, C455S461000, C455S462000, C455S445000, C379S242000, C379S418000, C379S201010, C379S114280, C379S114290, C379S115010
Reexamination Certificate
active
06882862
ABSTRACT:
The present invention provides a system and method for using a standard private branch exchange (PBX), such as e.g., the Lucent Technologies, Inc. DEFINITY® PBX, for interfacing with a wireless (e.g., cellular, etc.) communication network and the public switched telephone network (PSTN). The system employs an adjunct controller and uses computer telephony integration (CTI) associated with a standard PBX to communicate directly with an audio switch and the PSTN. Through the use of CTI, the standard PBX also provides feedback to the caller. For example, when an inbound call arrives (i.e., from the PSTN to a radio transceiver), the adjunct controller determines whether the wireless system has available resources (i.e., an available link) to grant calls and instructs the PBX to provide an audio connection between dynamically assigned wireless links (e.g., RF channels). If no link is available, a busy signal is referred back to the PSTN, and eventually back to the originating switch.
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Chia Shiann-An
Corley William E.
Foard Christopher
Ko Ya-Tien
Avaya Technology Corp.
Birch & Stewart Kolasch & Birch, LLP
Milord Marceau
LandOfFree
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