Specifications

1)Voip telephone
2)2 lines change freely.
3)3 party conferences

The Q710 is an advanced, fully featured two-lines IP Telephone that takes full advantage of VoIP technology by offering a flexible, interoperable solution at an affordable price it leverages the SIP standard to provide advanced calling, conferencing, and messaging features, and protects investments with an upgradeable flash-based architecture

Fuctures:

1.Three-line display screen with backlight and adjustable contrast

2.Two lines supported with corresponding LED indicators 
3.Conference calling (with or without server)
4.  High quality Full-duplex speaker phone for hands free calls 
5. Call hold, call waiting, and call forwarding
6.Caller ID and Call-waiting caller ID
7. Do not disturb
8. Auto answer
9. Configurable dial plan
10.500 entry phone book

Technical  Specifications:

Protocols Supported:
SIP (RFC3261, RF3262)
SDP (RFC2327)
(SIP) Subscribe / Notify (RFC3265)
(SIP) Offer / Answer Model (RFC3264)
(SIP) Refer Method (RFC3515)
DTMF transport (RFC2833)
SIP INFO and in-band DTMF transport
RTP / RTCP (RFC3550, 3551)
(SIP) DNS SRV (RFC2781)
IAX2
Peer to Peer calling

Product details: