Power backup for dsl modem and Airport Extreme

Does anyone here have backup power for a dsl modem and Airport Extreme that is successful? I have a name brand power backup and when the power goes off both the dsl modem and Airport Extreme remain on; however, the network connection is lost so the fact that they remain on doesn't help. I have been unable to find anything about this problem on the internet generally and consultation with a well-known squad person has not helped. Any thoughts about this will be welcome.

Yes, I agree. But since the backup power keeps the modem powered, why doesn't the dsl connection continue? The squad person I talked with told me that the speed with which the backup power units replace power during an outage is about the same across different backup brands/units (I don't recall the speed but it was in milliseconds) and should be quick enough to retain the dsl connection. Doesn't happen.

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    Message was edited by: orisinal

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