8020Two FXS port with lifeline

8020 is a reliable , world-wide compatible 2 FXS port with router and vlan function.

KeyFeatures

• Support SIP
• Support2SIP LineSIP line can bind selected port or use both port to make call
• CodecG.711A/u，G.7231 high/low，G.729, ilbc
• DTMFRFC2833 DTMF RELAY SIP INFO (outstanding in many sip server interactive application)
• VPNUDPTunnel , L2TP
• FaxT.38 and passthrough
• PolarityReversepolarity
• LifelineLife Line support : switch to PSTN callautomatically when Internet failed or Power is off
• SIP support
  1. TCP and UDP transmit
  2. IP/ domain register
  3. Auto search register IP when domain have serval IP
  4. Authentication, MD5 ,digest,basic
  5. Support singal and RTP encrypt (based on sip server )
  6. Support rport ,subscribe
  7. Support stun
  8. User-defined firmware,Open ,design to different system

Voice technology

1. Support Jitter Buffer, VAD, CNG, Voice Gain Setting.
2. By powerful infienon chipset perfect solution
3. 802.1P802.1Q QoS ,distinguish voice and data VLAN

Call feature /call control

1. 3 way conference , mixed conference voice via local or server .
2. Transfer ,blind transfer /attend transfer
3. Forward(always,busy,no answer)
4. Hold ,Call waiting
5. Speed dialing and IP calling
6. Support hotline .
7. Support DND ,black list for forbid some income calland limit some outgoing call
8. Flexible and applied ,easy-set dial rule and digital map
9. Auto add /delete prefix ,replace all or part of number dialed

Multi-line function

1. Conference between 2different SIP service line
2. Transferbetween 2different SIP service line
3. Auto select outgoing line
4. Multi-line can register , be usedsynchronously

Maintenance and Management

1. Web ,telnet and keypad management
2. Support auto-provision. Control in one center.
3. Account management with different right
4. Upgrade firmwarethrough HTTP, FTP or TFTP. And post mode
   Upload/download setting file
5. Support Syslog

Network Features

1. WAN/LAN: 4 RJ45 portBridge and Router model
2. Supportfirewall ,NAT,VLAN，DHCP server
3. Support PPPoE for xDSL
4. Support DHCP Client on WAN
5. Support DHCP Server on LAN
6. Support DNS Relay, SNTP Client
7. Network tools in telnet server: Including ping, race route, telnet client