Subject: Advanced Networking Technologies

Difficulty: Medium

Marks: 5 marks

B-ISDN (Broadband Integrated Services Digital Networks):

• The next generation of ISDN technology with promised bandwidth from 150 megabits per second upward sufficient to carry video phone calls and movies.
• BISDN will be carried over fiber optic cabling rather than wire and underlying protocol will be asynchronous transfer mode.
• Different implementations are planned in the USA which will employ synchronous optical networks and Europe which will be SDH
• One of the fundamental principle of BISDN is to offer subscribers a large variety of services such as video telephony,video high volume file transfer,HDTV and many more.
• The fixed length cells allows the prediction of the size of the buffers to be used and hence bits could be transmitted at any convenient rate unlike the fixed rate (64kbps) specified by ISDN