Some of the advantages of an ISDN line over a standard telephone line are:
 | Digital service – should have less errors |
| Connection is fast – direct connection with no dialling |
| Higher bandwidth – less time downloading material |
| Able to use ISDN for more than one task e.g. surf and telephone |
| Permits use of newer technologies e.g. video phone |
| Streaming video or audio without disruption |
| Video conferencing - multiple recipients |
| Multiple users |
| Because it's a digital service, ISDN offers excellent line quality compared to a rather noisy analogue line. |
| ISDN connections are made in typically less than a second - unlike modems and analogue lines which require 30 to 60 seconds before any data can be transmitted. |
| Voice, data and video can all be sent over a single ISDN line |
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