Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request From: David Brightbill Newsgroups: comp.dcom.telecom Subject: Re: Basic Questions About Telephones Message-ID: <10957@accuvax.nwu.edu> Date: 16 Aug 90 04:37:27 GMT Sender: news@accuvax.nwu.edu Organization: TELECOM Digest Lines: 11 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 10, Issue 575, Message 5 of 11 My first experience with troubleshooting telco lines happened in a hotel during a tradeshow around 1975 or so. I was selling PLATO connect time and had brought a terminal to show off the system. The local telco supplied a phone instrument and jack (old four prong) which worked fine. When I plugged in my DAA (had one mounted in a briefcase with a trimline phone and transfer switch), I had a dead line. Of course, Southern Bell had supplied a line with the black/yellow pair live and had switched the lines on their instrument so that it would work.