Physical Interfaces
• ISDNInterface 1/2/4*E1/T1, G.703, 120ORJ-48c
• Network InterfaceWAN and LAN, 2 * 10/100M Base-TX, RJ-45
• RS232 ConsoleRJ-45, 115200bps

Voice & Fax
• G.711A/U law (G.723.1, G.729A/B, iLBC–optional)
• Silence Suppression & Detection
• Comfort Noise Generation (CNG)
• Voice Activity Detection (VAD)
• Echo Cancellation (G.168)
• Adaptive (Dynamic) Jitter Buffer
• Call Progress Tone Generation
• Programmable Gain Control
• T.38/Pass-through
• DTMF Mode: Signal/RFC2833/Inband

Physical Feature
• Power: input:100-240V,50-60Hz output:12VDC,1.0A
• Temperature(operation): 0 ?~ 45 ?
• (storage): -20 ?~80 ?
• Operation Humidity: 10%-90% no condensation
• Dimension(w/D/H): 225*150*38mm
• Weight: 0.75kg

Protocol
• SIP-RFC3261,3262,3263,3264,
3265,3515,2976,3311
• SDP-RFC 2327
• RTP/RTCP-RFC2198,1889
• Network Protocol
IP,TCP, UDP,TFTP, FTP, RTP, RTCP,
ARP/RARP,ICMP Ping, NTP, SNTP,
Http, DNS

Signal
• PRI/PRAISDN E1/T1,JapanT1.ITU-T I.431, Q.921, Q.931, ETSIQ.sig
• R2China and other 22 variants
Maintain & Upgrade
• Web based configuration
• Data backup/restore
• Support English and Chinese
• Firmware upgrade by TFTP/web
• Web & Telnet login password modify
• Factory reset
• Output CDR/Tracking newsby syslog
• Call status information statistics

Certifications
• CE,FCC