Basic Features

Support SIP 2.0 (RFC3261) and correlative RFCs

Support 2 sip line

Codec:G.711A/u, G.7231 high/low, G.729a/b, G.722,

Echo cancellation: G.168 Compliance in LEC, additional acoustic echo cancellation(AEC) can reach 96ms max filter length in hands-free mode

Support Voice Gain Setting, VAD, CNG

Full duplex hands-free speakerphone

DTMF MODE:DTMF_RELAY, SIP_INFO, RFC_2833

NAT transverse:support STUN client

Application Features

SIP application:support Call forward/transfer/holding/waiting/3 way call/call park/join call/click to dial

SIP support SIP domain, SIP authentication (none, basic, MD5), Peer to Peer call

Call control features: flexible dial map, hotline, empty calling no. reject service, black list for reject authenticated call, white list, limit call, no disturb, caller ID,

Incoming calls /outgoing calls / missing calls. Each support 100 records

Support Phonebook 500 records

10 kind of ring type

Support Conference

Support Mute

Support MWI

Network Features

WAN/LAN: supports Bridge

Support PPPoE for xDSL

Support DHCP client on WAN

Support SNTP Client, Firewall

Support main DNS and seconary DNS server

Support VLAN

QoS with DiffServ

Network tools in telnet server: including ping, trace route, telnet client

Maintenance and Management

Web ,telnet and keypad management

Management with different account rights

Upgrade firmware through POST mode

Safe mode provide reliability

Support Auto Provisioning (upgrade firmware through HTTP, FTP or TFTP)

Support Syslog