Screen : 128 x 32 pixel, monochrome, graphical, non-backlit Lines : 1 Networking : 10/100BASE-T wired Ethernet LAN port plus switched PC port Voice Codecs : G.711a, G.711?, G.729, G.729a, and G.729ab Network Features : Dynamic Host Configuration Protocol (DHCP), Support for online firmware upgrades using Trivial File Transfer Protocol (TFTP), Domain Name System (DNS) Signaling protocol support : SIP Power Supply : IEEE PoE 802.3af is supported, Class 1 Dimensions : 205 x 150 x 53.5 mm Weight : 594.3g

Screen : The viewing angle of the display on the 1616-I is adjustable and measures 4 lines by 24 characters, Lines : 1 Networking : Dual Ethernet ports for connection of phone and collocated PC w/VLAN separation Voice Codecs : G.711, G.722, G.726, G.729ab Quality Of Service : High Network Protocols : H.323 Features : Deskphone supports 16 administrable feature buttons on the phone itself—and a 32-button expansion model provides access to a total of 48 feature keys or speed dial buttons, Each of the buttons features a dual LED (red, green) providing explicit status for the use, includes several fixed feature keys for common telephone tasks including conference, transfer, drop, hold and mute, includes a high quality 2-way speakerphone, and supports a broad portfolio of Avaya wired and wireless headsets through its integrated headset jack, Context sensitive user interface along with 3 softkeys and a 4-way navigation cluster Power Supply : PoE 802.3af class 2 device, also supports a local power supply Dimensions : N/A Weight : N/A

Screen : 5" Graphical TFT Color Display, 320 x 240 Pixel Resolution Lines : 1 Networking : 10/100BASE-T Ethernet connection through two RJ-45 ports Voice Codecs : G.711a, G.711, G.729a, G.729b, and G.729ab and iLBC audio-compression codecs Network Features : Cisco Discovery Protocol; IEEE 802.1 p/q tagging and switching Signaling protocol support : Skinny Client Control Protocol (SCCP); supports both SCCP and Session Initiation Protocol (SIP) Features : Full-duplex speakerphone with acoustic echo cancellation, Directories Key, Settings Key, Navigation Cluster with 'Select' Button Power Supply : IEEE 802.3af Power over Ethernet (PoE), or local power through an optional power adaptor Dimensions : 20.83 x 26.67 x 15.24 cm Weight : 1.59 kg

Screen : Display Size: 3.1" x 1.6" Lines : 1 Networking : 10/100 Base T Ethernet connections, 2nd ethernet line interface Voice Codecs : G.711, G.726, G.729ab Quality Of Service : IEEE 802.1Q (VLAN) Network Protocols : HTTP, (VoIP) H.323, SIP Features : 12 administrative buttons, 4 softkeys Power Supply : PoE Class: 2 Dimensions : N/A Weight : N/A

Screen : 2x24 character display Lines : 1 Networking : Voice Codecs : Quality Of Service : Network Protocols : Features : 12 shifted dial pad features, 10 fixed feature buttons, Hearing Aid compatible Power Supply : Dimensions : 21 x 25.9 x 7.1 cm Weight : 0.9 Kg