Premium Features:
4 Lines,Call Recording,Hold / Unhold ,Transfer (Xfer),DND (Do not Disturb),Redial,Mute,Auto accept call,NAT/Firewall support
STUN server Support ,ICE Support,Debug Mode (SIP message log),Codec Supported,G729, G711 u, G711 a, G722, GSM, iLbc, Speex/ 8000, Speex/16000 , Speex / 32000,Codec selection and Codec Quality Control (Bandwidth control),Silence Suppression,Echo Cancellation
Uses NEW RFC 3261 compliant stack,DTMF (RFC 2833),RFC 3951: Internet Low Bit Rate Codec (iLBC),Proxy Settings,Registration Timeout
Acoustic Echo Cancellation,Packet concealing,Packet Lost Concealment (PLC),Comfort Noise Generator (CNG),Resampling,Balance Display
Credit time display.
Basic Features:
Customized skin interfaces ,Call timer ,Last Number Redial ,Touch Tone ,Address Book ,Micro Phone Volume Control ,Speaker Volume Control ,Work with any full-duplex sound card ,Auto-configuration of settings for easy deployment