Application Features

1. 3 softkeys and direction key.
2. Outer POE,WiFi module( optional)
   SIP application: support call forward/ transfer/ holding/ waiting/conference/ paging and intercom
3. Call control features: flexible dial map, hotline, empty calling no. reject service, black list for reject authenticated call, limit call, no disturb, caller ID
4. Support phonebook 500 records
5. Incoming calls /outgoing calls / missing calls. Each supports 100 records.
6. Support conference and voice record on SIP server
7. Support voice record in this phone, 240 seconds max or 3 record max, user-defined record prompt with 1 minute max
8. 8 kind of ring types

Basic Features

1. Support SIP 2.0 (RFC3261) and correlative RFCs
2. Support IAX2
3. SIP supports 2 SIP servers
4. Codec：G.711A/u, G.7231 high/low, G.729a/b, G.722
5. Echo cancellation: G.168 Compliance in LEC, additional acoustic echo cancellation(AEC) can reach 96ms max filter length in hands-free mode
6. Support Voice Gain Setting, VAD, CNG
   Full duplex hands-free speakerphone
7. SIP support SIP domain, SIP authentication (none, basic, MD5), DNS name of server, Peer to Peer/ IP call
8. DTMF Relay：support inband, SIP info, RFC2833

Network Features

1. WAN/LAN: Support both Router and Bridge
2. Support PPPoE for xDSL
3. Support basic NAT and NAPT
4. NAT transverse：support STUN client
5. Support DHCP client on WAN
6. Support DHCP server on LAN
7. Support main DNS and secondary DNS server.
8. Support VLAN
9. Support DMZ
10. Support DNS Relay, SNTP Client, Firewall
11. Support VPN (L2TP/UDP TUNNEL) ,SRTP security protocol
12. QoS with DiffServ
13. Network tools in telnet server: including ping, trace route, telnet client

Maintenance and Management

1. Web ,telnet and keypad management
2. Management with different account right
3. Upgrade firmware through POST mode
4. Telnet remote management/ upload/download setting file
5. Safe mode provide reliability
6. Support Auto Provisioning (upgrade firmware through HTTP, FTP or TFTP)Support Syslog