- Support 2.0 (RFC3261) and correlative RFCs- Support IAX2- Support 2 SIP lines- Codec:G.711A/u, G.723.1 high/low,G.729 a/b, G.722.1,G.726 - Support HD voice- 2 line keys defined as multi-line with screen display, or used as SIP line keys- Soft keys programmable- Hard function key reprogrammable- SIP application:support call forward/transfer(blind/attended)/holding/ waiting/3 way talking/conference/pickup/join call/redial and unredial/click to dial- Support SRTP- Support BLF- Two 10/100 BaseT Ethernet Interface- Large dot matrix LCD Display- Support Multi-line- Support IAX2 line key- Support Open VPN and L2TP- 8 DSS keys- PoE,TR-069,Headset(RJ9) BRAND : ITT
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