Support SIP,mgcp protocol
Support 4 sip accounts at the same time
Support multi lines conference
Support Qos,Tos
Support DND(Do not destrub)
Dhcp server and address pool
Auto-provision firmware and configuration via HTTP server
Message Waiting LED and Button
Large dot-matrix LCD with back light
Support Call Wait,Call Hold, Call Transfer and conference
Audio codec G.711,G.723,G.729,G.726 etc
Set phone by HTTP web browser or Keypad
DHCP support for LAN or Cable modem
VAD(Voice active detect)
CNG (Comfort noise generation)
G.168/165 compliant 16ms echo cancellation
Dynamic voice jitter buffer
Full anti block,advanced encryption technology
GF500 series ipphone supports SIP,mgcp protocol.It is compatible with various softwitch systems and voip voice gateways to provide broadband IP voice service.

Power adapter: 5V DC output
Network interface:2 RJ45
Headset:2.5mm jack
Unit Dimensions?200?165?45mm(8.0?6.6?1.8inch)
Box Dimensions?330?230?77mm(13.2?6.3?3.5inch)
Carton(10pcs)Dimensions / Weight:
350?470?400mm (14?18.6?16inch)/ 13kg