04672658 is referenced by 291 patents and cites 5 patents.

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.

Title
Spread spectrum wireless PBX
Application Number
788061
Publication Number
4672658
Application Date
October 23, 1986
Publication Date
June 9, 1987
Inventor
Peter J McLane
Kingston
CA
Mohsen Kavehrad
Holmdel
NJ, US
Agent
Erwin W Pfeifle
David R Padnes
Assignee
AT&T Company and AT&T Bell Laboratories
NJ, US
IPC
H04L 27/30
H04J 13/00
H04Q 7/04
H04M 11/00
View Original Source