Phone Features
SIP authentication (none, basic, MD5)
Call forward/ Caller ID
Call transfer (blind/attended)
Call holding/waiting
9 kinds of ring types and
3 user-defined music ring
Multiple road call waiting in line
Softkeys programmable
Phonebook 500 records
SMS and Speed Dial
3 way conferencing
Multilanguage realizes localization
Flexible dial map
Empty calling no. reject service
Black list /white list
No disturb
Peer to Peer
Incoming calls /outgoing calls /
missing calls(100 records for each).

Advanced Features
XML phonebook/browser
Code synchronization via IP PBX/IMS
Click to dial via web phone book
Support action URL/active URI
Voice codec setting for each SIP line
Hands-free headset ringing choice

IP Phone System Integration
Conference call park
Call pickup
Paging and intercom
Redial and unredial
Click to dial
Secondary dialing automatically
CLIR (reject the anonymous call)
CLIP (make a call with anonymous)
Dial without register

Codec & Voice:

Wideband codec: G.722.1
Narrowband codec: G.711a/u, G.723.1,high/low, G.729a/b, G.726
Voice Gain Setting, VAD, CNG
Echo cancellation: G.168
Hands-free can support 96ms
Full duplex hands-free speakerphone

Network Features
WAN/LAN: 10/100M Ethernet ports,supports Route and Bridge mode.
IEEE 802.3 af
Support bridge working as hub(optional)
SIP 2.0 (RFC3261) and correlative RFCs
Support VLAN(voice vlan/data vlan)
DTMF Relay：support inband, SIP info,RFC2833
Support basic NAT and NAPT
NAT transverse: support STUN client
Support DHCP client on WAN
Support DHCP server on LAN
Support main DNS and secondary DNS server.
DNS name of server
SIP domain

Security
Support DNS Relay, SNTP Client,Firewall
SRTP, HTTPS
VPN (L2TP/OPENVPN), 802.1, DMZ
Network tools in telnet server:
including ping, trace route, telnet client

Maintenance and Management
Web, telnet and keypad management
Management with different account right
Upgrade firmware through POST mode and HTTP, FTP or TFTP
Support DHCP option66 auto provisioning
Auto Provisioning to upgrade firmware or configuration file with HTTPS
Telnet remote management/upload/download setting file
Safe mode provide reliability
Support TR-069(optional) and Syslog