Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1998-01-29
2000-04-11
Ngo, Ricky
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370401, 370466, 370474, H04L 1256
Patent
active
060495448
ABSTRACT:
A voice server module for an ATM switch is provided and generally includes an interface block which receives and multiplexes high speed preprocessed data, a voice processing block which compresses voice data and which is coupled to the interface, a data bus for carrying compressed voice data, a flag bus for carrying flags generated by the voice processing block relating to the voice data, an ATM adaptation layer (AAL) processor coupled to the data bus and to the flag bus which formats the compressed voice data into ATM AAL2 format, and a management processor which configures the interface block, the voice processing block, and the AAL processor. For each byte of data sent serially on the data bus, at least one bit of flag data is sent on the flag bus. In one embodiment, the flag bits are used to indicate whether the data on the high speed data bus is valid or not, tone detection, silence removal, and the type of encoding being utilized. In a second embodiment, the flag bus is used both to synchronize the adaptation layer processing means and the voice processing means (preferably, according to a forty frame superframe of five milliseconds) as well as to send control information. The control information includes a bit which indicates whether the data is compressed or not, a bit to indicate silence, a bit to indicate tone detection, and a bit to indicate an out-of-data indication.
REFERENCES:
patent: 5408469 (1995-04-01), Opher et al.
patent: 5490140 (1996-02-01), Abensour et al.
patent: 5673263 (1997-09-01), Basso et al.
patent: 5715250 (1998-02-01), Watanabe
patent: 5717691 (1998-02-01), Dighe et al.
patent: 5764645 (1998-06-01), Bernet et al.
patent: 5768273 (1998-06-01), Aznar et al.
patent: 5809022 (1998-09-01), Byers et al.
patent: 5822321 (1998-10-01), Petersen et al.
patent: 5852606 (1998-12-01), Prince et al.
patent: 5894477 (1999-04-01), Brueckheimer et al.
patent: 5943339 (1999-08-01), Mauger
patent: 5949791 (1999-09-01), Byers et al.
ITU-T I.363, B-ISDN ATM Adaptation Layer Specification: Type 2 AAL, Mar. 1993, pp. 1-17.
ITU-T I.363.5, B-ISDN ATM Adaptation Layer Specification: Type 5 AAL, Aug. 1996, 59 pages.
ITU-T I.363.1 , B-ISDN ATM Adaptation Layer Specification: Type 1 AAL Aug. 1996, 46 pages.
ITU-T I.363.2 , B-ISDN ATM Adaptation Layer Specification: Type 2 AAL, Sep. 1997, 74 pages.
ITU-T I.366.1, Segmentation and Reassembly Service Specific Convergence Sublayer for the AAL type 2, Jun. 1998, 32 pages.
ITU-T, I.366.2 AAL Type 2 Service Specific Convergence Sublayer for Trunking, Oct. 1998, 111 pages.
Draft new ITU-T Recommendation Q.aal2 AAL type 2 Signalling Protocol (Capability Set 1), 1999, 70 pages.
Kurdzo James Patrick
O'Neil, III John Martin
Steinbach Daniel Paul
Gallagher Thomas A.
General Data Comm., Inc
Gordon David P.
Jacobson David S.
Ngo Ricky
LandOfFree
ATM switch voice server module utilizing flag signalling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with ATM switch voice server module utilizing flag signalling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ATM switch voice server module utilizing flag signalling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1182064