15-04-2005, 11:16 PM
Found this for you 
ISDN vs. ADSL
Assuming both ISDN and ADSL are available in your area, the choice depends on a number of factors:
* If you frequently use two or more telephone lines for voice connections, ISDN may be attractive to you. This is especially true if you typically connect to the Internet several times a day but for only an hour or two. An ISDN BRI line supports not only 128 kbps Internet access but also two telephone connections (voice) and a fax connection.
* If a high-speed and/or a dedicated 24 x 7 Internet connection is what you are looking for, then ADSL is probably the right solution.
Price is of course also a factor...
ISDN vs. ADSL
Assuming both ISDN and ADSL are available in your area, the choice depends on a number of factors:
* If you frequently use two or more telephone lines for voice connections, ISDN may be attractive to you. This is especially true if you typically connect to the Internet several times a day but for only an hour or two. An ISDN BRI line supports not only 128 kbps Internet access but also two telephone connections (voice) and a fax connection.
* If a high-speed and/or a dedicated 24 x 7 Internet connection is what you are looking for, then ADSL is probably the right solution.
Price is of course also a factor...