VoIP Phone

Voice features

l  SIP supports 3 SIP servers

l  Support SIP 2.0 (RFC3261) and correlative RFCs

l  Codec: G.711A/u, G.723.1 high/low, G.729a/b，G.722，G.722.1，G.726

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

l  Support Voice Gain Setting, VAD, CNG

l  Support full duplex hands-free

l  SIP support SIP domain, SIP authentication(none basic, MD5), DNS name of server, Peer to Peer/ IP call

l  Automatically select calling line, if one line can’t be connected, the phone can automatically switch to other line to call.

l  DTMF Relay: support SIP info，DTMF Relay，RFC2833

l  SIP application: SIP Call forward/transfer（blind/attended）/hold/waiting/3 way talking/

l  Exchange /sms /pickup /joincall /redial /unredial /vport

l  Call control features: Flexible dial map, hotline, empty calling No. reject service, black list for reject authenticated call, limit call, no disturb, caller ID, Flexible deer peer rule.

l  Support phonebook 500 records，Incoming calls / outgoing calls / missing calls. Each supports 100 records

l  Support conference on server.

l  Support IAX2

l  Phonebook supports vcard standard

l  12/24 hours time display

l  Support daylight saving time

l  Support path, gruu

l  Support SIP Privacy

l  Support SMS

l  Support Memo

l  Support WMI

l  Support Speed dial

l  Support Alarm clock

6.1.3. Network features

l  WAN/LAN: support bridge and router model

l  Support PPPoE for xDSL

l  Support basic NAT and NAPT

l  Support VLAN (optional: voice vlan/ data vlan)

l  NAT Penetrate, Stun Penetrate

l  Support DMZ

l  Support VPN (L2TP) function

l  Wan Port supports main DNS and secondary DNS server, can select dynamically to get DNS in DHCP mode or statically set DNS address.

l  Support DHCP client on WAN

l  Support DHCP server on LAN

l  QoS with DiffServ

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