* PC port: 1 x RJ45 10/100 BaseT Ethernet, line autosensing/switching * WAN port: 1 x RF45 10/100 BaseT Ethernet, line autosensing/switching * 4 Soft buttons plus navigation button * LCD: dot matrix (2.75" x 1.5") * Complies with RFC3261, SIP standard * Supports G.723.1, G.729a/b, G.711 voice codecs * Dynamic IP support (DHCP and PPPoE) * Multi protocol support: TFTP, RTP, SNTP, HTTP, SIP, DHCP, PPPoE, and Telnet * QoS support * Remote software upgrade capability (via FTP or TFTP) * Web based GUI setup * STUN support * Call transfer * Multi line (4 line appearance buttons with LED's) * Hold * 3 Way conference * Message waiting indicator * DND * Adjustable ring volume * Audible/visual ring signal * Call history * Selectable ringer tones * 5 One touch memory * Phonebook * Headset compatible * Redial * PoE (power over ethernet) * Handset volume control * Two position phone stand