Future B-ISDN System Based On IBIS

The actual and future B-ISDN situation is described, together with the field trial of IBIS in JAPAN. The CCITT recommendation of B-ISDN is being published in 1989. The basic NNI (network node interface) of 155.52 Mbps is applicable for the video signal transmission, together with the audio service, N-ISDN service, POTS and other data information services. When the STM-1 signal is induced to the subscriber by optical fiber, the interactive and integrated service will be realized. The interactive and integrated service of field trial is being performed in Osaka Japan. The field trial of "IBIS", which will open up the way to interactive network, is now operating.