VOICE OVER IP VOIP Performance over Different Protocols

VOICE OVER IP VOIP Performance over Different Protocols

Introduction Overview of Vo. IP In my words, A system to convert analogue signals to digital so that telephone calls made over the internet. Computer to Phone How its possible? ? SIP to SIP Phone to Phone

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The next slides are largely taken from the journal Reference APA: Che, X. , & Cobley, L. . (2009). Vo. IP Performance over Different Interior Gateway Protocols. International Journal of Communication Networks and Information Security, 1(1), 34 -41. Retrieved July 27, 2010, from Pro. Quest Computing. (Document ID: 1746855051)

Technical Content (Related to Distributed System) Routing is an essential data networking function that provides an efficient real-time data delivery Vo. IP requires. Vo. IP as a real-time application The operations of routing protocols rely on two sets of information – routing tables and distribution of knowledge. (Routing tables are the mechanism that a router uses to locate other networks. ) networking function that provides an efficient real-time data delivery Vo. IP requires. brings new challenges for service providers and enterprises. Networks need to be more intelligent, secure, and have a higher level of performance.

Technical Content. . . Contd. . . Performance of Vo. IP can be affected by different routing behaviours which include the most widely used protocols such as RIP (Routing Information Protocol) OSPF (Open Shortest Path First) EIGRP (Enhanced Interior Gateway Protocol [Cisco’s Proprietary])

Vo. IP in Enterprise Networks A PBX (Private Branch Exchange) that provides Vo. IP The main challenges facing the deployment of Vo. IP in large enterprise networks are the Interoperability Security Bandwidth Management

Terminology DV – Distance Vector LS – Link State Hops – Measure of Distance in IP Based Network MTU – Maximum Transmission Unit

Performance Evolution The Vo. IP performance metrics include delay, jitter, packet loss and Mean Opinion Score (MOS). Delay is the time that elapses between when an utterance is spoken and when it is played back at the receiver. Jitter is the variability in the delay which is computed as expected arrival time minus actual arrival time.

Conclusion Vo. IP offers great benefits for service providers and enterprises, challenges to implement Vo. IP application over enterprise network still remain. Routing is an essential data networking function that provides an efficient real-time data delivery required by Vo. IP.

Reference Che, X. , & Cobley, L. . (2009). Vo. IP Performance over Different Interior Gateway Protocols. International Journal of Communication Networks and Information Security, 1(1), 34 -41. Retrieved July 27, 2010, from Pro. Quest Computing. (Document ID: 1746855051)