< networking , standard > A video compression standard developed by ITU-T before 1992 to work with integrated service digital network . Data is compressed at the rate of 64P kilobits per second, where P can range from 1 to 30 depending on the number of ISDN channels used. This standard was developed primarily to support video phones and video conferencing .
See also ivs .
http://www.crs4.it/~luigi/MPEG/mpeggloss-h.html#H.261 .
[Date? Details?]
(1994-11-03)