Cisco 9951. Display resolution: 640 x 480 pixels, Display diagonal: 127 mm (5 "). Phonebook capacity: 200 entries. Voice codecs: G.711a, G.722, G.729a. Video codecs: H.264/AVC, Video capturing speed: 30 fps, Video capture resolution (max): 640 x 480 pixels. Supported network protocols: DHCP, TFTP, DNS, SRTP, TLS, CAPF