Telephonic communications – Audio message storage – retrieval – or synthesis
Patent
1986-10-23
1987-06-09
Rubinson, Gene Z.
Telephonic communications
Audio message storage, retrieval, or synthesis
379 61, 375 1, 375 7, 370 19, H04M 1100, H04Q 704, H04J 1300, H04L 2730
Patent
active
046726586
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.
REFERENCES:
patent: 4112257 (1978-09-01), Frost
patent: 4291409 (1981-09-01), Weinberg et al.
patent: 4455454 (1984-06-01), Umebayashi
patent: 4538028 (1985-08-01), Gazzoli et al.
patent: 4561089 (1985-12-01), Rouse et al.
Freret et al., Proceedings of NTC, Jun. 1980, pp. 69.7.1-69.7.4.
Turin, IEEE Jnl. on Sel. Topics in Comm., Vol. SAC-2, Aug. 1984, pp. 597-603.
Kavehrad Mohsen
McLane Peter J.
AT&T Company and AT&T Bell Laboratories
Ham Mark E.
Padnes David R.
Pfeifle Erwin W.
Rubinson Gene Z.
LandOfFree
Spread spectrum wireless PBX does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spread spectrum wireless PBX, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spread spectrum wireless PBX will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1834886