The EP-8201 VoIP Phone has an impressive list of features:

Standard SIP Standard Protocols, VoIP Speech codecs: including G.711 a-law and u-law, GSM, G.723.1, G.729a/b/ab Interoperable with various 3rd party VoIP end user devices, Proxy/Registrar/Server, and gateway products Up to 4 SIP registrations (same server or different servers) with BASIC or DIGEST authentication (MD5, MD5-sess).

Full-duplex Speakerphone with echo cancellation Handsfree operation via speakerphone or headset mode Standard phone features: Caller ID Display, Call Waiting, Call Hold, Call Transfer, Call Forward, Call Conference, Call History, Speed Dial, Phonebook Special phone features: Dial Plan, Hotline, Voice Mail DTMF modes: In-band and out-of-band DTMF (RFC2833/SIP INFO) dialing Dial Plan 128 x 64 dot matrix LCD (sixe: 4 cm x 7 cm) with backlight and 4-level contrast controls 4 ring types, 6 ringing levels (including silence level) 6-level volume controls for both speakerphone and headset modes DHCP Client, Static IP.

PoE support for the LAN Port Built-in network switch or router for the PC Port Backup Server support for Single Server Mode Jitter Buffer, VAD, CNG and PLC Redundant DNS support QoS Support (ToS / VLAN) Built-in Web Server for Device Configuration Built-in Phone Menu Auto Firmware Upgrade and Phonebook Update Auto Provisioning via http/ftp/tftp