2. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Preparing Your Network for an IP PBX TMCU-201-1 Warren Sonnen Director of Product Management Epygi Technologies Ltd. warren.sonnen@epygi.com

3. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Agenda The Basics Discovery & Assessment Is The Network Ready? Installation What Next?

4. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California The Basics Real-Time Protocol (RTP) Delay Jitter Packet Loss Echo Quality of Service (QOS) Mean Opinion Score (MOS) – 1.0 – 5.0 Quality of Experience (QOE) 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 PCPCPCPC Router Layer 2 Switch VLAN BVLAN A Layer 2 Switch PCPCPCPC

5. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Discovery & Assessment 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 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 LAN Voice traffic simulation Type of current traffic Traffic flows Link speeds Current network stress WAN Internet Service Provider (ISP) type Current usage Backbone congestion Bursting Link type

6. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California 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 Test it again! Was there an improvement? Did the anomaly resurface? Did the final simulation mimic estimated traffic activity? Security

7. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Installation Good Luck! Successful Deploymentvs.Unsuccessful Deployment Unknown environment End-user driven install On-site setup First time install Informed installer Installation plan Pre-staging Qualified/Trained

8. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California 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 Is this all free? Outsourcing this activity Managed service revenue Maintenance revenue Network assessment and diagnostic fees

9. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Mission Critical or Mission Impossible? Warren Sonnen Director of Product Management Epygi Technologies Ltd. warren.sonnen@epygi.com