Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2008-12-22
2010-11-16
Nguyen, Brian D (Department: 2472)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S352000
Reexamination Certificate
active
07835407
ABSTRACT:
A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voice signals between a switched circuit network and a packet based network. The signal processing system also includes a data exchange capable of exchanging data signals modulated by a voiceband carrier on the switched circuit network with unmodulated data signal packets on the packet based network. The data exchange is performed by demodulating data signals from the switched circuit network for transmission on the packet based network, and modulating data signal packets from the packet based network for transmission on the switched circuit network. The call discriminator is used to selectively enable the voice exchange and data exchange.
REFERENCES:
patent: 4285060 (1981-08-01), Cobb et al.
patent: 4617676 (1986-10-01), Jayant et al.
patent: 4689760 (1987-08-01), Lee et al.
patent: 5119322 (1992-06-01), Stroobach
patent: 5311578 (1994-05-01), Bremer et al.
patent: 5329587 (1994-07-01), Morgan et al.
patent: 5333191 (1994-07-01), McCarthy
patent: 5339384 (1994-08-01), Chen
patent: 5353346 (1994-10-01), Cox et al.
patent: 5379293 (1995-01-01), Kanno et al.
patent: 5388127 (1995-02-01), Scarpa
patent: 5416836 (1995-05-01), Marinelli et al.
patent: 5442694 (1995-08-01), Chitrapu et al.
patent: 5442696 (1995-08-01), Lindberg et al.
patent: 5452289 (1995-09-01), Sharma et al.
patent: 5454015 (1995-09-01), Olafsson
patent: 5471470 (1995-11-01), Sharma et al.
patent: 5491565 (1996-02-01), Naper
patent: 5519774 (1996-05-01), Battista et al.
patent: 5535271 (1996-07-01), Jangi et al.
patent: 5577041 (1996-11-01), Sharma et al.
patent: 5583933 (1996-12-01), Mark
patent: 5598468 (1997-01-01), Ammicht et al.
patent: 5600649 (1997-02-01), Sharma et al.
patent: 5694517 (1997-12-01), Sugino et al.
patent: 5764627 (1998-06-01), Sharma et al.
patent: 5790532 (1998-08-01), Sharma et al.
patent: 5790641 (1998-08-01), Chan et al.
patent: 5793498 (1998-08-01), Scholl et al.
patent: 5818929 (1998-10-01), Yaguchi
patent: 5852630 (1998-12-01), Langberg et al.
patent: 5859671 (1999-01-01), Kim
patent: 5949874 (1999-09-01), Mark
patent: 5970441 (1999-10-01), Mekuria
patent: 5987061 (1999-11-01), Chen
patent: 6023470 (2000-02-01), Lee et al.
patent: 6028679 (2000-02-01), Murphy
patent: 6125177 (2000-09-01), Whittaker
patent: 6141341 (2000-10-01), Jones et al.
patent: 6151636 (2000-11-01), Schuster et al.
patent: 6229889 (2001-05-01), Cannon et al.
patent: 6233226 (2001-05-01), Gringeri et al.
patent: 6259677 (2001-07-01), Jain
patent: 6370244 (2002-04-01), Felder et al.
patent: 6393124 (2002-05-01), Tsai et al.
patent: 6480589 (2002-11-01), Lee et al.
patent: 6504838 (2003-01-01), Kwan
patent: 6549587 (2003-04-01), Li
patent: 6650662 (2003-11-01), Arnaud et al.
patent: 6757367 (2004-06-01), Nicol
patent: 6907112 (2005-06-01), Guedalia et al.
patent: 6967946 (2005-11-01), Tackin et al.
patent: 6980528 (2005-12-01), LeBlanc et al.
patent: 6987821 (2006-01-01), Li
patent: 6990195 (2006-01-01), LeBlanc et al.
patent: 7031440 (2006-04-01), Xu
patent: 7039044 (2006-05-01), Whitfield et al.
patent: 7082143 (2006-07-01), LeBlanc et al.
patent: 7092365 (2006-08-01), Tackin et al.
patent: 7161931 (2007-01-01), Li et al.
patent: 7180892 (2007-02-01), Tackin
patent: WO9726753 (1997-07-01), None
patent: WO9728628 (1997-07-01), None
International Telecommunication Union, ITU-T Telecommunication Standardization Sector of ITU, Series G: Transmission Systems and Media, Digital Transmission Systems—Terminal Equipments—Coding of Analogue Signals By Methods Other Than PCM, Dual Rate Speech Coder for Multimedia Communications Transmitting at 5.3 and 6.3 kbit/s, Annex A: Silence Compression Scheme; ITU-T Recommendation G.723.1—Annex A; © ITU 1997; 22 sheets.
International Telecommunication Union, ITU-T Telecommunication Standardization Sector of ITU, Series G: Transmission Systems and Media, Digital Transmission Systems—Terminal Equipments—Coding of Analogue Signals by Methods Other Than PCM, “Coding of Speech at 8 kbit/s Using Conjugate Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP), Annex B: A Silence Compression Scheme For G.729 Optimized for Terminals Conforming to Recommendation V.70”, ITU-T Recommendation G.729—Annex B; © ITU 1997; 23 sheets.
International Telecommunication Union, ITU-T Telecommunication Standardization Sector of ITU, Series G: Transmission Systems and Media, Digital Transmission Systems—Terminal Equipments—Coding of Analogue Signals by Methods Other Than PCM, Coding of Speech at 8 kbit/s Using Conjugate Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) Annex A: Reduced Complexity 8 kbit/s CS-ACELP Speech Codec, ITU-T Recommendation G.729—Annex A; © ITU 1997; 15 sheets.
European Telecommunication Standard, “Digital Cellular Telecommunications System; Half Rate Speech; Voice Activity Detector (VAD) for Half Rate Speech Traffic Channels (GSM 06.42 version 5.0.1)”; Source ETS; TC-GSM; Reference DE/SMG-110642Q; © 1997; 21 sheets.
International Telecommunication Union, ITU-T, Telecommunication Standardization Sector of ITU, Series I: Integrated Services Digital Network, Overall Network Aspects and Functions—Protocol Layer Requirements, “B-ISDN ATM Adaptation Layer Specification: Type 2 AAL”, ITU-T Recommendation I.363.2; © 1998; 47 sheets.
Internet Papers: Perkins et al.; RTP Payload for Redundant Audio Data; Network Working Group Request for Comments: 2198; http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc2198.html; Sep. 1997; pp. 1-9.
Internet Papers: Schulzrinne, “RTP Profile for Audio and Video Conferences with Minimal Control,” Internet Engineering Task Force, Internet Draft; http://hegel.ittc.ukans.edu/topics/internet/internet-drafts/draft-i/draft-ietf-avt-profile-new-C..; Nov. 20, 1997; pp. 1-29.
IMTC Voice over IP Forum Technical Committee, “IMTC Voice over IP Forum Service Interoperability Implementation Agreement 1.0,” Dec. 1, 1997, VoIP97-061; pp. 1-44.
Edward B. Morgan, Fax Over Packet; Telogy Networks, Inc., Germantown, Maryland; © 1998; pp. 1-1.
International Telecommunication Union, ITU-T Telecommunication Standardization Sector of ITU, Series V: Data Communication Over The Telephone Network, “A Modem Operating at Data Signalling Rates of up to 33 600 bit/s for Use on the General Switched Telephone Network and on Leased Point-to-Point 2-Wire Telephone-Type Circuits”; ITU-T Recommendation V.34; © ITU 1998; 78 sheets.
International Telecommunication Union, ITU-T Telecommunication Standardization Sector of ITU, Series T: Terminals for Telematic Services, “Procedures for Real Time Group 3 Facsimile Communication Over IP Networks”, ITU-T Pre-published Recommendation T.38; © ITU 1998; 32 sheets.
Internaitonal Telecommunication Union, ITU-T Telecommunication Standardization Sector of ITU, Series V: Data Communication Over the Telephone Network, Simultaneous Transmission of Data and Other Signals, “A Digital Modem and Analogue Modem Pair For Use on the Public Switched Telephone Network (PSTN) at Data Signalling Rates of up to 56 000 bit/s Downstream and up to 33 600 bit/s Upstream”, ITU-T Recommendation V.90; © ITU 1999; 49 sheets.
Frame Relay Forum Technical Committee, “Voice over Frame Relay Implementation Agreement”; © 1998; 54 sheets.
International Telecommunication Union, ITU-T Telecommunication Standardization Sector of ITU, Series I: Integrated Services Digital Network, Overall Network Aspects and Functions—Protocol Layer Requirements, “AAL Type 2 Service Specific Convergence Sublayer For Trunking”; ITU-T Recommendation I.366.2; © ITU 1999; 96 sheets.
International Telecommunication Union, ITU-T Telecommunication Standardization Sector of ITU,
LeBlanc Wilf
Stevenson Shawn
Broadcom Corporation
McAndrews Held & Malloy
Nguyen Brian D
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