With its minimal transit time delay and very low bit error rate, the superior method to transmit high-speed data, digital video signals and other compressed signals. In H.261 and H.263 motion video compression, the act of totally discarding from zero to three consecutive video frames as part of the video compression process. Its use depends upon the degree of video motion existing and the aggregate bit rate. Because of the large data loss with this technique, this is truly a compression approach of last resort. A wide-area network protocol often transported over DS1 facilities.
Latency can cause problems for videoconferencing.
It forms a part of the ITU-T codec and telephony requirements. This algorithm produces telephone grade audio, especially useful in videoconferencing at aggregate bit rates above 128 Kbps. Appendix I to G.711 adds low complexity packet loss concealment, useful for good quality audio transmission within a suite of VoIP applications. It forms a part of the ITU-T H.320 codec requirements. G.722 produces good quality audio but is generally not recommended at aggregate bit rates below 256 Kbps.