For there 5 cannot find any info.

(i) telephone quality audio
(ii) simple application sharing
(iii) videoconferencing
(iv) MPEG video
(v) virtual reality applications


thanks
Si

Telephone is 64k (not VoIP)
Application sharing depends on the application but works fine over 64k ISDN
Video Conf is about 384k (or 3 BRI lines)
Virtual Relaity is probably small if you are only communicating location within an environment or 10MB+ if you have all the graphics.
MPEG2 is about 4-10MB as used on DVD players.

Si

Thanks mate much appreciated :D