RJ45 IP phone( on sales pronotion )
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Supports SIP 2.0 . Supports TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, ARP/RARP, DNS, DHCP, NTP, PPPoE. STUN, TFTP protocols
Supports NAT, DMZ and port forwarding.
Advanced Digital Signal Processing (DSP) to ensure superb hi-fidelity audio quality, suit with the control of audio flutter and concealment technology anti-lost message.
Supports codes G711(A-law and U-law) , G.723.1 (5.3K/6.3K) , , G.726(40K/32K/24K/16K) , G.729A/B, and iLBC
Supports standard voice features such as Caller ID Display or Block, Call Waiting, Hold, Transfer Forward, FLASH, in-band and out-of-band DTMF, Dial Plans.
Supports three way call
Supports silence suppression and check VAD (Voice Activity Detection) , CNG (Comfort Noise Generation) , Line Echo Cancellation (G.168) , and AGC (Automatic Gain Control)
Supports auto-crossing firewall (NAT) but without changeable to setting.
Supports configuration by web browser, TFTP or HTTP central server to remote configuration.