2008

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https://escholar.umt.edu.pk/handle/123456789/17414

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    Breadth first searching algorithm implementation on robot
    (UMT Lahore, 2008) Fehmy Malik; Azlan M ahmood; Hayyan Farrukh
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    VoIP protocol and its implementation
    (UMT Lahore, 2008) M. Umar Maqsood; Usman Hafeez
    VoIP, or voice over internet protocol, uses the internet instead of a regular phone line to transmit your telephone call. A futuristic dream hardly. You're probably already using VoIP for your long distance calls, as most major carrier's route voice traffic over the internet. But as VoIP technology advances, it could provide important operational cost savings to TV and radio stations and networks, and to cable companies. One of the challenges in providing a VoIP solution is extracting the same level of performance from a Linux based PowerPC that a VoIP would offer. Two standards have recently emerged for signaling and control for internet telephony. One is ITU recommendation H.323, and the other is the IETF session initiation protocol (SIP). These two protocols represent very different approaches to the same problem: H.323 embraces the more traditional circuit-switched approach to signaling based on the ISDN Q.931 protocol and earlier H-series recommendations, and SIP favor the more lightweight internet approach based on HTTP. First we compare SIP and H.323 on complexity, quality of service, extensibility, scalability, and features. Than we start implementation of SIP protocol using Asterisk which is Linux based. However it gives more comfort in security, flexibility to add new features and relative ease in implementation and call control. Finally we note that how the revolution of IP telephony is most beneficiary for upcoming challenges.