




Premium Features: 4 Lines,Call Recording,Hold / Unhold ,Transfer (Xfer),DND ... 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 ...
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