I am having an issue with a pstn line connecting to a modem. The modem can not get a dial tone but when I plug in a normal telephone it can. What are the troubleshooting steps for this and potential fixes? Would a line filter do any good and
Is there such a thing as a repeater for PSTN? or will a DSL filter help?
Is it a DSL modem? If it is you might want a filter.