Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Reexamination Certificate
2006-12-26
2006-12-26
To, Doris H. (Department: 2616)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
C370S493000, C375S220000, C379S093010
Reexamination Certificate
active
07154911
ABSTRACT:
A method and apparatus for service multiplexing over telephone networks which employ bridged tap construction to allow the simultaneous delivery of different services to physically separated subscribers over a shared single pair of wires. Service is provided to one or more subscribers by connecting them to an open-circuited branch or directly with the working portion of the shared line. Service filters are used at appropriate locations in the network topology to couple or isolate the different communication channels. The wire pairs are used to simultaneously carry different services to physically separated subscribers, i.e., a portion of a common line carries one service to one location and a second service to another location. Telecommunication services are partitioned to occupy separate frequency bands in the spectrum of the transmission line using frequency division multiplexing (FDM) techniques. The location of the terminating point for each service is different and flexible as facilitated by the use of bridged taps, service drop connections and appropriate filtering. Inverse multiplexing, a method of combining multiple physical links (e.g., telephone lines) into a single, virtual communication link, is used to increase transmission bandwidth. The simultaneous delivery of different telecommunication services over a common line to physically separated subscribers may be used in conjunction with inverse multiplexing to increase and/or vary the transmission bandwidth to individual subscribers.
REFERENCES:
patent: 3937889 (1976-02-01), Bell, III et al.
patent: 5150365 (1992-09-01), Hirata et al.
patent: 5512937 (1996-04-01), Beierle
patent: 5528630 (1996-06-01), Ashley et al.
patent: 5539777 (1996-07-01), Grube et al.
patent: 5608733 (1997-03-01), Vallee et al.
patent: 5617417 (1997-04-01), Sathe et al.
patent: 5627501 (1997-05-01), Biran et al.
patent: 5627836 (1997-05-01), Conoscenti et al.
patent: 5668857 (1997-09-01), McHale
patent: 5784683 (1998-07-01), Sistanizadeh et al.
patent: 5790550 (1998-08-01), Peeters et al.
patent: 5796424 (1998-08-01), Ely et al.
patent: 5812786 (1998-09-01), Seazholtz et al.
patent: 5878047 (1999-03-01), Ganek et al.
patent: 5930340 (1999-07-01), Bell
patent: 5949763 (1999-09-01), Lund
patent: 5982785 (1999-11-01), Woerner et al.
patent: 6069899 (2000-05-01), Foley
patent: 6314102 (2001-11-01), Czerwiec et al.
patent: 6356562 (2002-03-01), Bamba
patent: 6584122 (2003-06-01), Matthews et al.
Very-high-speed Digital Subscriber Lines System Requirements, Draft Technical Report-Rev. 12, ANSI TlEl. Apr. 1997-131R3.
American National Standard for Telecommunications-Network and Customer Installation Interfaces-Asymmetric Digital Subscriber Line (ADSL) Metallic Interface, ANSI T1. 413-1995.
The ATM Forum Technical Committee, Inverse Multiplexing for ATM (IMA) Specification Version 1.0, AF-PHY-0086.000 (Jul. 1997).
Hyun Soon D.
To Doris H.
Verizon Laboratories Inc.
LandOfFree
Method and apparatus for service multiplexing over telephone... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for service multiplexing over telephone..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for service multiplexing over telephone... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3656107