Product : Voip Sip phone
Model number: NXD-804
Voip Sip Phone function description:
NXD-804 is a commercial SIP VOIP telephone developed by ESTONE Company himself. It is a luxe SIP VOIP telephone compatible with SIP V2, achieving full duplex hands-free call and having 128*64 graphics LCD with back light, which can display many languages. When it is disposed into H.323, NXD-804 cancooperate with Gateway and GW of most H.323. It also has perfect H.450 protocol to complete all telecom value-added services such as call transfer, call forward, call waiting, etc.. Cooperating with soft exchange system, it can totally replace traditional PBX or KEY LINE PHONE. It can also be used as LAN phone or hot-line phone. When it is disposed into SIP, NXD-804 can cooperate with most SIP system. Besides having popular g.723 and g.729, it can use low-priced GSM voice compression algorithms. This model is the first-selected one for telecom operators and the main type exported by Estone Company.
Voip Sip phone NXD-804 Key Features:
Two separated UART for CPU and DSP, 32-bit RISC CPU with 125MHz clock rate, 16-bit Fixed-Point DSP with 125MHz clock rate, Max. support 32Mbytes SDRAM and 16MBytes Flash.
1. Support SIP(RFC2543,ARFC3261),PhoneBook with 140 groups memory.
2. Network Protocol: TFTP Client/DHCP Client/PPPoE/PPP Vpn Client, Telnet/HTTP Server, DNS Client, IP, TCP, UDP,RTP,RTCP,IP,ICMP,ARP,RARP,SNTP. NAT function: Virtual Server, Port mapping, ALG, DMZ, Static routing table;
3. Voice Quality: VAD: Voice activity detection. CNG: Comfortable noise generato, LEC: Line echo canceller, Packet Loss Compensation, Adaptive Jitter Buffer.
4. Codec: G.711: 64k bit/s (PCM), G.723.1: 6.3k / 5.3k bit/s, G.726: 16k / 24k / 32k / 40k bit/s (ADPCM), G.729A 8k bit/s (CS-ACELP), G.729B: adds VAD & CNG to G.729.
5. Call Function: Call Hold, Call Waiting, Call Forward, Caller ID, 3-way conference
6. DTMF Function: In-Band DTMF, Out-of Band DTMF, SIP Info.
7. SIP Server: Registrar Server (three SIP account), Outbound Proxy.
8. Phone Function: Volume Adjustment, Speed dial, Phone book, Flash, Speaker Phone.
9. IP Assignment: Static IP and DHCP, PPPoE support for ADSL or Cable modem and ppp for VPN.
10. Security: HTTP 1.