VOIP Telephones

Port
10/100Base-T, 2ports(LAN, PC) for H.323/MGCP/SIP

Protocol
1) ITUT H.323/MGCP/SIP
2) TCP/IP PPPoE DHCP RTP/RTCP Supported
3) Megaco/H.248 protocol

Standard
1) ITUT G.711A/U G.723.1(5.3K/6.3K)G.729 Supported
2) VAD (Voice activity detection)
3) CNG (Comfortable noise generation)
4) DTMF/Call Progress Tone Detection&Generation
5) Dynamic voice jitter buffer
6) Lcd: 2lines*15character mode for alphanumeric display
7) Programmable echo suppression
8) G.165 G.168 32ms

Software Performance
1) Support different E.164 dialing format (CAL, AL, NO change)
2) With suitable network, LDT IP PHONE can be set with an E.164 phone
number so that its operation is just like a phone on PSTN
3) Provide direct IP to ip call mode, including PSTN call by a voice gateway
4) Automatically gatekeeper discovery in LAN
5) Call keeping or call transferring supported
6) Speed dial
7) Call with or without gate- keeper (direct IP dialing)
8) Easy to operate, numbering is the same as traditional phones (E.164)
9) Upgrade by TFTP
10) Build-in H.323 proxy to pass NAT

Management
Easy to be Setup and Configured by: Keypad Telnet Http IP Phone Tool Software

Power Supply
Input 100~230v,Output 9v DC,500Ma,Power 0.5w

Usage Temperature
0~50o C

Storage Temperature
-2~5o C

Humidity
10~90%(No dew)

Size
221mm(L)159mm(w)60mm(H)