I'm on the Bell South/AT&T self install plan. It's been up and running for several years. Phone and DSL all run on same red and green wires. 2 weeks ago the phone died, but our DSL is still working. I've tried a phone in all the jacks to no avail, even on the jack that the modem is plugged into. I took my phone out to the NID and plugged it into the test jack. Phone works there. What's up with that?