Features

• Call forwarding
  Call transfer
  Line hold
  Last number redial
  Frequent number speed-dial
  Caller ID, via SIP URL exposure
  Mute
  Touch-tones
  Proxy Authorization support
  Address Book
  AGC (Automatic Gain Control)
  VAD
  Volume Visualization

• Easy user Install
  G.711/G.723 codec included
  Speakerphone
  Intuitive user interface
  Configurable “skins” for user interface
  Standard PC hardware support
  Sound Blaster-compatible sound cards
  Supports Windows 95/98/ME/NT4/2000/XP
  NAT/Firewall support, stable SIP,RTP ports
  Specify NAT IP to be written in SIP messages
  Auto-Configuration of settings for easy deployment
  STUN support for NAT detection and classification
  TURN support for NAT traversal