Murali Sampath

US Patent:

7548539, Jun 16, 2009

Filed:

Dec 19, 2005

Appl. No.:

11/311557

Inventors:

Stephen Kouretas - Somerset NJ, US
Abhay Dutt - Jackson NJ, US
Pin Lo Chen - Montville NJ, US
Donald Howell - High Bridge NJ, US
Murali Sampath - Morganville NJ, US
Aziz Mzili - Hillsborough NJ, US
Dongping Lan - Oak Ridge NJ, US
Lujia Zeng - Piscataway NJ, US

Assignee:

AudioCodes, Inc. - Somerset NJ

International Classification:

H04L 12/28
H04L 12/66
H04J 3/16
H04M 1/64

US Classification:

370356, 370389, 370392, 370466, 379 68, 379 85

Abstract:

A method of obtaining information associated with a Voice over Internet Protocol (VoIP) communication session includes tapping the computer network passively to obtain signaling information and media information in a first format, separating the signaling information from the media information, transcoding the media information to a second format, and storing the transcoded media information in the second format. The media information includes data, voice, audio, and/or video information. A system adapted to obtain information associated with a VoIP communication session on a computer network includes a tapping device to passively tap the computer network to obtain signaling information and media information in a first format, a processing device adapted to transcode the media information from the first format to a second format and separate the signaling information from the media information, and a storage device adapted to store the transcoded media information in the second format.

US Patent:

7873035, Jan 18, 2011

Filed:

May 15, 2009

Appl. No.:

12/466670

Inventors:

Stephen Kouretas - Somerset NJ, US
Abhay Dutt - Jackson NJ, US
Pin Lo Chen - Montville NJ, US
Donald Howell - High Bridge NJ, US
Murali Sampath - Morganville NJ, US
Aziz Mzili - Hillsborough NJ, US
Dongping Lan - Oak Ridge NJ, US
Lujia Zeng - Piscataway NJ, US

Assignee:

AudioCodes, Inc. - Somerset NJ

International Classification:

H04L 12/66
H04L 12/28
H04M 1/67

US Classification:

370356, 370392, 379 68, 379 85

Abstract:

A method and computer-readable medium for obtaining information associated with a VoIP communication session includes tapping the computer network passively to obtain signaling and media information in a first format, separating the signaling and media information, determining transport information from at least one of the signaling and media information, transcoding the media information to a second format, and storing the transcoded media information in the second format. The media information includes data, voice, audio, and/or video information. A system obtain information associated with a VoIP communication session on a computer network includes a tapping device to passively tap the computer network to obtain signaling and media information in a first format, a processing device to transcode the media information from the first format to a second format, separate the signaling information from the media information, and determine transport information from at least one of the signaling and media information, and a storage device to store the transcoded media information in the second format.

US Patent:

8155516, Apr 10, 2012

Filed:

May 5, 2009

Appl. No.:

12/435482

Inventors:

Edward Sokolowski - Kanata, CA
Bharat Dave - Howell NJ, US
Paul Grabbe - Tinton Falls NJ, US
Murali Sampath - Princeton NJ, US

Assignee:

Alphion Corporation - Princeton Junction NJ

International Classification:

G02F 1/00

US Classification:

398 5, 398 8, 398 2, 398 1

Abstract:

In a fiber-optic communications system, a backup or redundant optical link is provided at the central office in parallel with the primary one in use. Parameters associated with the backup link, including its signal delay, its attenuation, etc. are stored at the time of installation. Upon failure of the primary link, switchover can be automatic, and the stored parameters are used to make adjustments necessary for the differences between the primary link and the backup link. In addition, having information on the differences between the two links, the central office is able to send control information downstream which is used at the remote site to control changes that must be made for upstream signals. For example, customer equipment can be signaled to adjust its timing for the next time slot or interface amplifiers can be adjusted to account for the change in attenuation. The central office could be provided with a corrected interface to accommodate the new link and a substantial buffer to account for the change in timing, and switchover to the new timing could be done gracefully.