Phone voltage should be 48v off hook. On hook (when you pick up and get a dial tone) is -48v. Ring voltage is 98v. Variances can be + or - 6v. Beyond that, you will have problems detecting loop current properly. Putting a voltage meter on the line should result in -48v being read. Good luck! Kyle Elmblade Distinct Computer Solutions Sales - Upgrades - Training - Consulting [log in to unmask] "A closed mouth gathers no foot" From: "Eric Johnson" <[log in to unmask]> Sent: Wednesday, January 09, 2002 6:59 AM Subject: [PCBUILD] Telephone line question > Any telephone experts out there? We're having a connection > problem that I suspect has more to do with the telephone cabling in > our house than the machine itself. We live in a new developement > where there is no "official" phone hookups yet - things are not > always clean and neat here in Mexico ;) We have cabled in a > connection from a nearby area where there are real phone > connections. The total cable length is probably 400 to 500 meters > (1,300 to 1,600 ft. for you gringos). The cable we're using is the > black two strand copper telephone wire and there are a number of > telephones (4 I think) sharing this connection. > > At the computer we have a converter that makes the wall connection > into 2 connections and we have a telephone connected there too. > Untill recently, we had to disconnect the phone to be able to connect > with the modem. Now the modem doesn't seem to get a dial tone to > be able to dial at all. The whole thing has been rather mysterious in > that sometimes it acts up and other times is doesn't. The phone has > always worked fine though. > > Could we be having a problem with low voltage as a result of the > distance or perhaps there's a loose connection somewhere along > the line? Anybody know the correct voltage so I can check it? Any > suggestions greatly appreciated. > > Thanks, > Eric PCBUILD's List Owners: Bob Wright<[log in to unmask]> Drew Dunn<[log in to unmask]>