linphone: linphone (SIP video-phone) linphone: linphone: Linphone is an audio and video Internet phone with GTK+ and linphone: console interfaces. It uses the SIP protocol, and is compatible linphone: with most SIP clients and gateways. It uses various audio and linphone: video codecs such as Opus, Speex, GSM, G711, ilbc, Theora, H263-1998, linphone: MPEG4, VP8, H264 and snow. linphone: linphone: Homepage: https://www.linphone.org linphone: linphone: