Method and system for one-way delay measurement in...

Details Method and system for one-way delay measurement in... Method and system for one-way delay measurement in...

2006-12-12

2011-11-08

Ramakrishnaiah, Melur (Department: 2614)

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Of trunk or long line

C379S022010, C379S022020, C379S024000

Reexamination Certificate

active

08054946

ABSTRACT:
A pilot signal is transmitted from a transmitting device through a communication network under test to a receiving device. The pilot signal is transmitted at a known transmit time and in a voice channel. Incoming signals within the voice channel at the receiving device are monitored to detect receipt of the pilot signal. A receipt time of the pilot signal at the receiving device is identified. The one-way delay (OWD) is determined as a difference between the receipt time of the pilot signal at the receiving device and the transmit time of the pilot signal from the transmitting device.

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patent: 7590222 (2009-09-01), Smith
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patent: 2004/0150720 (2004-08-01), Loew
patent: 2004/0186731 (2004-09-01), Takahashi et al.
patent: 2004/0209606 (2004-10-01), Cleary et al.
patent: 2004221764 (2004-08-01), None

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