Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2007-02-06
2007-02-06
Pham, Chi (Department: 2616)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S356000, C370S395430
Reexamination Certificate
active
09855103
ABSTRACT:
An objective, service-level specific voice call listening quality test scheme for a Voice Over IP (VOIP) network is presented. Test probes are deployed along the border of the VOIP network. Each test probe is capable of placing calls over the VOIP network to the other test probes at different levels of service and measuring call quality using an objective measurement algorithm such as PAMS or PSQM. The measurement results are collected on an ongoing basis to obtain information on the VOIP network's voice call quality. The information is compared to thresholds to measure performance against Service Level Agreement guarantees.
REFERENCES:
patent: 5867813 (1999-02-01), Di Pietro et al.
patent: 5961599 (1999-10-01), Kalavade et al.
patent: 6259691 (2001-07-01), Naudus
patent: 6275797 (2001-08-01), Randic
patent: 6363053 (2002-03-01), Schuster et al.
patent: 6370120 (2002-04-01), Hardy
patent: 6404764 (2002-06-01), Jones et al.
patent: 6437229 (2002-08-01), Nobumoto
patent: 6477492 (2002-11-01), Connor
patent: 6512746 (2003-01-01), Sand
patent: 6570969 (2003-05-01), Albal et al.
patent: 6600740 (2003-07-01), Valentine et al.
patent: 6603774 (2003-08-01), Knappe et al.
patent: 6633582 (2003-10-01), Panburana et al.
patent: 6665271 (2003-12-01), Thomas et al.
patent: 6700953 (2004-03-01), Maurer et al.
patent: 6707827 (2004-03-01), Shaffer et al.
patent: 6718296 (2004-04-01), Reynolds et al.
patent: 6721541 (2004-04-01), Kingsley
patent: 6735175 (2004-05-01), Havens
patent: 6738353 (2004-05-01), Chong
patent: 6741569 (2004-05-01), Clark
patent: 6748433 (2004-06-01), Yaakov
patent: 6754232 (2004-06-01), Tasker
patent: 6778496 (2004-08-01), Meempat et al.
patent: 6834040 (2004-12-01), Tomberlin
patent: 6862298 (2005-03-01), Smith et al.
patent: 6876647 (2005-04-01), Celi, Jr.
patent: 6940820 (2005-09-01), Fang
patent: 2002/0143979 (2002-10-01), Douceur et al.
patent: 2002/0167936 (2002-11-01), Goodman
patent: 2003/0009306 (2003-01-01), Fang
patent: WO 00/72453 (2000-11-01), None
Documentation,Omni-Q Voice Quality Management System, Revision A, RADCOM, Jan. 2001.
Spirent Communications: “Voice over IP (VoIP) Testing Methodology and Case Studies”, Spirentcom White Paper, 'Online! Feb. 2001.
Reynolds, P J B et al. “Quality VoIP—an engineering challenge”, BT Technology Journal, BT Laboratories, GB, vol. 19, No. 2, Apr. 1, 2001.
Cole, R G et al. “Voice Over IP Performance Monitoring”, Computer Communications Review, Association for Computing Machinery, New York, US, vol. 31, No. 2, Apr. 2001.
Author Unknown; “OmniQ Voice Quality Management System”; 12 pp; BRO-OMNIQ. Revision A; Radcom, 2001.
Conway, A.E., “A Passive Method for Monitoring Voice-Over-IP Call Quality with ITU-T Objective Speech Quality Measurment Methods”, Apr. 28 - May 2, 2002; Communications, 2002; ICC 2002, IEEE International Conference, vol. 4 pp. 2583-2586.
DE, B.S. et al., “End-to-end Voice Over IP Testing and the Effect of QoS on Signaling”; Mar. 16-18, 2003; System Theory, 2003; Proceedings of the 35thSoutheastern Symposium; pp. 142-147.
Rix, A.W. et al.; “The Perceptual Analysis Measurment System for Robust End-to-End Speech Quality Assessment”; Jun. 5-9, 2000; Acoustics; Speech and Signal Processing, 2000; ICASSP 00; Proceedings; 2000 IEEE International Conference, pp. 1-4; vol. 3.
Rix, A.W. et al; “Perceptual Evalution of Speech Quality (PESQ) A New Method for Speech Quality Assessment of Telephone Networks and Codecs”; May 7-11, 2001; Acoustics, Speech and Signal Processing, 2001; Proceedings; 2001 IEEE International Conference, vol. 2, pp. 749-752.
Faegre & Benson LLP
Jagannathan Melanie
Level 3 Communications, Inc.
Pham Chi
LandOfFree
Service level agreements based on objective voice quality... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Service level agreements based on objective voice quality..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Service level agreements based on objective voice quality... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3862162