IP Phone with PSTN, Support VPN, Multi-protocol (PH802T)
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SIP (RFC3261, RFC3265)
Voice codec: 711a/u, 729a/b
G. 168 echo cancellation standard, compliant 96ms with speaker mode
Jitter Buffer, VAD, CNG, SIP/IAX2, Domain name register, point-to-point Call
RTP and RTCP
Support the Inbound/Outbound transmission; SIP info, DTMF Relay, RFC2833
Many countries' standard ring
NAT transversal: Support STUN, CITRON, AVS Mode
Support SIP domain, SIP Authentication(none, basic, MD5) , Domain Name parse
Support two SIP server synchronously, including Pubic Server/ Private server, can make a call by either proxy
Support redundancy public server, can auto switch to backup server when host server has problem.
Support SIP application, including SIP Call forward/transfer/holding/waiting.
Support two models: Bridge and Router, integrate two ports router function.
Support basic NAT and NAPT.
Support PPPoE for xDSL, and support to dial numbers automatically while hanging up the phone.
Support DHCP Client for WAN.
Support DHCP server for LAN.
Support DNS relay for LAN, can provide the LAN Network equipment with DNS service.
Use advanced DSP tech to insure high quality voice.
Use advanced jitter buffer tech to prevent the delaying and losing the information package.
Support network tools, including ping, race route, telnet client.
Support three modes to configure WAN port IP, they are: Static, DHCP, and PPPoE.
Provide the small LAN and control the firewall.
Provide the small LAN with the optional priority level.
Support Secondly Layer QoS(802.1p)
Register 2 CH SIP system and 1 CH common phone number in the same time, 2 VOIP numbers, 1 common telephone number, there are three numbers in one device.
Call waiting, call transferring, three way call, multiple callforward
Switch between the IP phone and common phone in the same time
38 pieces of calling in memory.
18 pieces of calling-out view/check time
38 pieces of VIP memory
20 pieces of 16 unit single key memory
12 pieces of 16 double key memory
Redial by one key
Administration and Maintenance
Support POST mode and modify by the POST mode
Configure by web, key, Telnet, support the keypad to operate the IP phone, administrate and set the phone by Http and Telnet, also support the user to filtrate the IP address
Update software and configure the files by HTTP, FTP, TFTP
Support system log
Setting multiple administers and user name, password; Support Telnet in the opposite direction to go through NAT/FIREWALL and administrate the phone by Telnet