I have worked on Avaya UC products for more than 5 years & currently working on Cisco UC products. Quite familiar in troubleshooting all H.323, SIP, SCCP, MGCP protocols. Experienced in Avaya Communication Manager, Media Gateways, Cisco Unified Communication Manager, Cisco Unity Connection, Cisco 3925, 3945 Voice Gateways, Cisco VG224 Analog Gateways..