Spread spectrum wireless pbx

Details Spread spectrum wireless pbx Spread spectrum wireless pbx

H - Electricity

04

Q

325/17

H04Q 11/00 (2006.01) H04Q 3/62 (2006.01) H04B 1/707 (2006.01) H04Q 7/26 (2006.01)

Patent

CA 1252822

- 18 - A Spread Spectrum Wireless PBX Abstract The present invention relates to a wireless PBX network wherein direct sequence spread spectrum multiple access is used for voice and data communications to support a plurality of local-local and local-external calls. The present wireless PBX arrangement comprises a plurality of local user transceivers using a first separate unique chip sequence patterns for information communication and a second common chip sequence pattern for call-set up; and a central PBX comprising (a) a plurality of PBX transceivers, each of which uses a separate first chip sequence pattern which is matched to a corresponding local user transceiver; (b) a switching means for interconnecting local users to each other or to an external network via the associated PBX transceivers; and (c) a call set-up receiver responsive solely to initial call set-up information sent by any user using the second common chip sequence pattern. Optional selection diversity or equal gain combining diversity and/or error correction encoding may also be included in the transceivers.

518844

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