Patent ID: 7796526

Claim:
A method for evaluating quality of a voice over internet protocol service on a cable network using an analysis device comprising: a connector for connecting to a coaxial cable of the cable network, the cable network including a connection to a network employing internet protocol communications; a display; a digital communication circuit including a DOCSIS modem and a multimedia terminal adapter, wherein the digital communication circuit is operably connected to the connector and configured to communicate information signals within the cable network via the connector, the digital communication circuit operable to establish a first type of data connection through the cable network, the first type of data connection employing an internet protocol; establish a second type of data connection through the cable network, the second type of internet data connection comprising a voice over internet protocol; and a processing circuit connected to the digital communication circuit, the method comprising: (a) causing the processing circuit to provide a voice over internet protocol test initiation command to the DOCSIS modem; (b) performing ranging and registration of the DOCSIS modem in the communication system to obtain a first diagnostic data; (c) registering the multimedia terminal adapter for the voice over internet protocol service in the communication system; (d) causing the processing circuit to generate a tone dialing sequence for a telephone number; (e) establishing a voice over internet protocol connection between the analysis device and a test telephone device represented by the telephone number; and (f) upon completion of step (e), obtaining a second diagnostic data selected from a group consisting of delay, packet loss, and jitter information, by exchanging audible signals with the test telephone device.