Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2007-10-09
2007-10-09
Lee, Andrew C. (Department: 2616)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S356000
Reexamination Certificate
active
09855156
ABSTRACT:
A mechanism to measure voice call quality in a Voice over IP (VOIP) network using a single voice call quality test probe is described. VOIP communications devices, such as gateways, that are deployed at various points along the border of the VOIP network each are configured to play an embedded reference voice file in response to test calls placed by the test probe to those devices. The test probe measures voice call quality by recording the played voice file and comparing it to the test probe's own copy of the reference voice file. The comparison uses a standard voice call quality analysis algorithm, such as Perceptual Analysis Measurement System (PAMS) or Perceptual Speech Quality Measurement (PSQM).
REFERENCES:
patent: 5867813 (1999-02-01), Di Pietro et al.
patent: 5878113 (1999-03-01), Bhusri
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: 2002/0145979 (2002-10-01), Baj
patent: 2002/0167936 (2002-11-01), Goodman
patent: 2003/0009306 (2003-01-01), Fang
patent: WO/00/72453 (2000-11-01), None
Rix, A.W., Hollier, M.P.; The Perceptual Analysis Measurement 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 on; vol. 3.
Conway, A.E.; A Passive Method for Monitoring Voice-Over-IP Call Quality with ITU-T Objective Speech Quality Measurement Methods; Apr. 28-May 2, 2002; Communications, 2002, ICC 2002. IEEE International Conference on; vol. 4; pp. 2583-2586□□.
De, B.S.; Joshi, P.P.; Sahdev, V.; Callahan, D,; End-to-End Voice Over IP Testing and the Effect of QoS on Signaling; Mar. 16-18, 2003; System Theory, 2003. Proceedings of the 35th Southeastern Symposium on; pp. 142-147.
Rix et al.; Perceptual Evaluation 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. IEEE Int. Conf; vol. 2; pp. 749-752.
Documentation,Omni-Q Voice Quality Management System, Revision A, RADCOM, Jan. 2001.
SPIRENT Communications: “Voice Over IP (VoIP) Testing Methodology and Case Studies” Feb. 2001.
Reynolds R., “Quality VOIP- An Engineering Challenge” BI Technology Journal, BT Laboratories, vol. 19 pp. 22-32: 2001.
Cole, et al.,; “Voice Over IP Performance Monitoring” Computer Communications Review, Association for Computing Machinery, NY vol. 31 No. 2. 2001.
Hensley Kim & Holzer LLC
Lee Andrew C.
Level 3 Communications LLC
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