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Preparing Your Network for an IP PBX

This presentation covers the basics of network preparation for an IP PBX, including topics such as real-time protocol, quality of service, network assessment, and installation. It also discusses the importance of ongoing monitoring and maintenance to ensure the reliability of VoIP.

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Preparing Your Network for an IP PBX

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  1. Preparing Your Network for an IP PBX TMCU-201-1 Warren Sonnen Director of Product Management Epygi Technologies Ltd. warren.sonnen@epygi.com

  2. Agenda • The Basics • Discovery & Assessment • Is The Network Ready? • Installation • What Next?

  3. The Basics • Real-Time Protocol (RTP) • Latency • Jitter • Packet Loss • Echo • Quality of Service (QOS) • Mean Opinion Score (MOS) • 1.0 – 5.0 • Quality of Experience (QOE) Layer 2 Switch PC PC PC PC

  4. The Basics cont. Local Area Network (LAN) • Wide Area Network (WAN) • Virtual LAN (VLAN / IEEE 802.1Q) • Differentiated Services Code Points (DiffServ) • Type of Service (TOS) • IEEE 802.1p Router VLAN A VLAN B Layer 2 Switch PC PC PC PC

  5. Discovery & Assessment • Network Topology • Current hardware elements • IP addressing scheme • Large-scale data applications • Service level agreement (SLA) • Assessment • Voice traffic simulation • Metric translation • Duplex mismatch • Stress the network

  6. Discovery & Assessment cont. • WAN • Internet Service Provider (ISP) type • Current usage • Backbone congestion • Bursting • Link type • LAN • Voice traffic simulation • Type of current traffic • Traffic flows • Link speeds • Current network stress • Delay should be under 150 milliseconds • Jitter buffers can resolve mild jitter - 20 to 40 ms buffer • Packet Loss should not be less than 1% • Mean Opinion Score (MOS) between 3.5 and 4.1 is desired

  7. Is The Network Ready? • Review the baseline assessment • Have all “The Basics” been addressed? • HUBS vs. Managed Switches • Application level gateway (ALG) firewall • Make appropriate changes • Codec decision

  8. Is The Network Ready? cont. • Test it again! • Was there an improvement? • Did the anomaly resurface? • Did the final simulation mimic estimated traffic activity? • Security

  9. Installation Good Luck! Successful Deployment vs. Unsuccessful Deployment • Informed installer • Installation plan • Pre-staging • Qualified/Trained • Unknown environment • End-user driven install • On-site setup • First time install

  10. What Next? How important should VoIP be to the customer? • The number ONE critical application How can I ensure my VoIP stays #1? • Periodic health checks • Client PC health – Virus, Worms, SPAM, and Spyware • Plan new application deployments

  11. What Next? cont. Is this all free? • Outsourcing this activity • Managed service revenue • Maintenance revenue • Network assessment and diagnostic fees

  12. Mission CriticalorMission Impossible? Warren Sonnen Director of Product Management Epygi Technologies Ltd. warren.sonnen@epygi.com

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