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I am working on a nortel voip phone system and one of the phones doesn't work. &nbsp;where would &nbsp;I start diagnosing the problem. &nbsp;Where could the problem lie?
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I am working on a nortel voip phone system and one of the phones doesn't work.  where would  I start diagnosing the problem.  Where could the problem lie?

Nortel VOIP  diagnostic

Telecommunication occurs when the exchange of information between two or more entities (communication) includes the use of technology. Communication technology uses channels to transmit information (as electrical signals), either over a physical medium (such as signal cables), or in the form of electromagnetic waves. The word is often used in its plural form, telecommunications, because it involves many different technologies.

Telecommunications

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.