ABTO Software RTP SDK - Version 2 ABTO Software RTP SDK provides a powerful and highly customizable solution to quickly build application with ability to send/receive sound by RTP protocol. * Main features: Ability to create multiple independent channels * Ability to select different sending codec for each channel (G711, G726, G729, GSM, SPEEX) * Recording in mp3 format * Playing wav, mp3 files * Voice detection feature