Limitations of ISDN

	ISDN is more expensive to install than a standard telephone.
	ISDN is more expensive to rent per month than a standard telephone line.
	An engineer has to fit the system in your home.
	Not all exchanges have ISDN enabled.
	If all you require is a telephone service, then the standard analogue service is fine.
	It costs money to convert your telephone line back should you decide to revert to an analogue service.

Although ISDN offers a faster connection to the internet, on some web sites you may not notice a difference in speed of response.

The reason for this is that for many web servers the bottleneck is not the speed of connection but rather the number of people accessing the same web site at the same time.

So no matter how fast your connection it will make no difference to your browsing experience on that site.