1)Protocol :SIP,TCP/UDP/IP/TFTP/FTP/DHCP/DNS/SNTP/RTP/RTCP
VLAN/Qos
2)IP Assignment:Static IP,DHCP,PPPoE
3)Codec:G711a,G711u,G723,G729a/b
4)Net Support:STUN Client
5)DTMF:Inband audio/RFC2833
6)Voice Quality:VAD/CNG/AEC
7)Configuration:Key&LCD/Web browser configuration
8)Firmware Upgrade:FTP/Web/TFTP
9)Phone Functions:
Handset/Speakerphone/Earphone and Volume adjustable
Speed dial
Phone book(200 groups)
Call log(60 incoming/60 ourgoing/60 missed entries)
5 Groups Ring selectable wiht 5 steps volume ajustable
Mute
Hold
Forward
Transfer
Conference
Call Timer
Call Waiting
Redial
DND
Advance Function:Two SIP server at the same time manual time setting
Network Interface:2 RJ45(for network and PC)
LCD Diapay:131x64 Dot matrix LCD
LED indicator:Net connect/Power/Mic
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