PXO+ is a very flexible softphone with hundreds of features including:

  • Softphone for RTC Quality Assurance and End Use
  • RTC and VoIP signaling via SIP and SIPs
  • RTC and VoIP media via RTP and SRTP
  • ICE, NAT and STUN capabilities
  • Speech codecs: G.711 MuLaw, G.711 ALaw, G.726, G.723.1, G.729A, GSM6.10, AMR, G.728, G.722, iLBC, Speex, EVRC, GSM-EFR, G.729E, G.729D, LPC, G.722.1/RFC3047, AMR-WB/G.722.2, RTAudio, AAC-LC, SILK, G.718, Opus, iSAC, EVS
  • Video codecs: H261, H.263 (RFC2190,RFC2429), H.264, H.265, Theora, MPEG-1/2, MPEG-4, Opus, VP8.
  • Signal generation and detection
  • Scripting and VoiceXML Support
  • T.38 Fax