Full specification
16 programmable line/feature keys
3.5" (8.9 cm) white backlit monochrome display, 396 × 162 pixels
Full-duplex speakerphone with wideband audio (G.722)
4 context-sensitive soft keys
2-way navigation button with dedicated fixed function keys
2-port 10/100 Mbps Ethernet switch (LAN and PC ports)
Power over Ethernet (PoE) IEEE 802.3af Class 1 / AC power adapter (sold separately)
RJ-9 headset port with EHS support
Audio codecs: G.711 a/μ, G.722, G.729a/b, iLBC
SIP signaling protocol
Electronic hookswitch control
Desk or wall-mountable with replaceable bezel
Operating temperature: 0°C to 40°C (32°F to 104°F)
Operating humidity: 10% to 90% non-condensing
1-year Cisco standard replacement warranty
Includes handset with cord, stand, and Ethernet cable