We have a problem with a DSL modem reconnecting several times a day. We have traced the problem to incoming analog faxes on that same line. Every time a fax dials in and the analog modem starts squealing, the DSL drops out and renegotiates. The DSL company, CSDSL.net is at a loss to explain this. At the wall jack there is a splitter. One side of the splitter goes into a DSL filter and continues to the analog modem in a fax server. THe other side goes directly to the DSL modem. Apparently, the analog noise is going back through the DSL filter and hitting the DSL modem and confusing it. Any suggestions or explanations here?