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Unformatted text preview: the timing requirements of voice traffic. A cell switched ATM is the best network for video quality guarantees and fast delivery. PBX is a telephone system inside of an enterprise that switches the calls between enterprise users on local lines, and at the same time it allows all users to share some information of external phone lines. PBX is there to help save the cost of requiring each user there own line. PBX are computers that deal in digital voice, normally at the standard 64Kbps. VoIP is a voice delivery system that uses the Internet Protocol. VoIP sends information in digital form, in descrete packets instead of the traditional circuit committed protocols of the PSTN. An advantage to VoIP is that you dont get the regular telephone service charges. You can use VoIP as long as your PC is equipped with a sound card, speakers, microphone and a modem....
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This note was uploaded on 11/07/2011 for the course IT 240 242 taught by Professor Some during the Spring '10 term at University of Phoenix.
- Spring '10