You mention telephone, so I'm going to assume we're talking about DSL internet.
Do you have the filters on each phone? Note, you do not put a filter on your internet connections, only the lines with phones plugged into them.
Also, are we talking about a wireless connection, or a standard lan wire connection?
Do you have the filters on each phone? Note, you do not put a filter on your internet connections, only the lines with phones plugged into them.
Also, are we talking about a wireless connection, or a standard lan wire connection?