【實用社交app】OctonRing|最夯免費app-綠色工廠好玩App

OctonRing is an internet phone or Voice Over IP phone (VoIP), compatible with the SIP protocol.OctonRing can be used with a large number of SIP-compatible VoIP service providers.If you subscribe a VoIP to PSTN (=classic telephony) account to a telecom provider, you can reach everyone that has a "classic" phone line.Alternatively, Octon.net provides free SIP accounts to make audio & video calls over the internet at no cost.List of supported features:-Audio with the following codecs: speex (narrow band and wideband), G711 (ulaw,alaw),ILBC, GSM, SILK, G722, OPUS, AAC-ELD- Secured call (SIP TLS/SRTP/ZRTP)- Video with the VP8 codec (H264 & MPEG4 on demand )- AVPF RFC support for network resilience- Multiple calls- Audio conferencing- Address book integration- Call history- DTMF (telephone tones) support using SIP INFO or RFC2833- Text messaging