This session is an advanced look at best practice design, implementation and troubleshooting of Avaya IP telephony. Learn Avaya IP telephony including; C-LAN, MedPro, IPSI, Call Servers, H.248 Gateways, Processor Ethernet, etc. Business Continuity and Disaster Recovery options available. Demystifying SIP, how it can be used in your IP solution today. Deep technical dive on best practice design, implementation and troubleshooting. The Phone and Gateway Registration Process and Alternate Gatekeeper Lists. Network configuration enabling Phones to self discover the Voice VLAN. Network Regions - What they are and how they can make your multi-site solution's efficient. Call Admission Control, Data Switch and Router configurations for QoS. Understand how to choose the best QoS model for your solution. How MPLS works and why it’s preferred for multi-site connectivity. H.248 Gateway Settings explained - MGC list, MGC timers. We will discuss real customer problems and how to troubleshoot effectively. You will leave this session with in-depth knowledge to design, implement and troubleshoot Avaya IP Telephony over your network.