Cisco Small Business SPA504G 4 Line IP Phone With Display, PoE and PC Port Type: Wired VoIP Security: Password Protected System, Preset to Factory Default Password Protected Access to Administrator and User Level Features HTTPS with Factory Installed Client Certificate HTTP Digest - Encrypted Authentication via MD5 (RFC 1321) Up to 256-bit AES Encryption Ports: 2 100baseT RJ-45 Ethernet Ports (IEEE 802.3, including 802.3af) Handset: RJ-9 Connector Built-in Speakerphone and Microphone Headset 2.5 mm Port Display: Pixel Based Display: 128x64 Monochrome LCD Graphical Display with back light LEDs: Speakerphone On/Off Button with LED Headset On/Off Button with LED Mute Button with LED Message Waiting Indicator LED Dimensions: 8.43 x 8.35 x 1.73 Weight: 1.9 lbs. Temperature: 0ºC to 40ºC