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Why do I need AT&T High Speed Internet if I currently have ISDN?

Learn about AT&T High Speed Internet if you currently have ISDN.


OVERVIEW

AT&T High Speed Internet with ISDN

The connection speed of AT&T High Speed Internet is even faster than ISDN. Also, AT&T High Speed Internet sends data and voice over the same line, so you talk on the phone and connect to the Internet at the same time.
Last updated: April 21, 2017

Community forums

Have questions about your AT&T Internet service? Explore our community forums for answers.

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