Subject: [NEXTEL-1] Voice over IP solution for mobile radio interoperability

From: [email-masked]
Date: Sun, 30 May 2004 14:36:18 -0400

Voice over IP solution for mobile radio interoperability

Publication Date:
09/24/2002

John H. Mock & W.Thomas Miller
University of New Hampshire, ECE Department

Abstract

While performing their duties, emergency service
personnel in mobile units from various departments
need to communicate with each other. Currently,
unless every department has identical radios, this
is impossible due to lack of radio interoperability.

This research addresses the need for these
 non-interoperable mobile units to communicate with
one another. It is not financially possible for these
agencies to each purchase new, matching radios;
instead a solution is being developed using Voice
Over IP (VoIP). 

This solution involves establishing a network
 consisting of a single central server and clients
 located at each of  the departments. Interfaced
 to each client is a radio that is compatible with 
the individual department's mobile  radio units. 
Each client runs an H.323 compliant application
that was developed using Microsoft's Telephony
Application Programming Interface 3.0 (TAPI 3.0).

A prototype system has been developed and
preliminary testing has proven the system operates
successfully. Further testing methods for
determining voice quality are being evaluated.

http://www.project54.unh.edu/Reference/Download.pm/1147/Document.PDF

http://www.project54.unh.edu/index.html

http://www.project54.unh.edu/brochure.pdf

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