phone cable
Posted: Mon Apr 23, 2007 1:56 pm
What colour wires are usually used for main line out to the st on phone lines ? i thought mine was red/ black but i cant get a dial tone.
Thats the second line, I'm pretty sure its the blue and white.Loanrangie wrote:What colour wires are usually used for main line out to the st on phone lines ? i thought mine was red/ black but i cant get a dial tone.
I tried this on an un-used line in my house, didn't get a tone. the line hadn't been connected in 3 years. When they came in and checked it, the line was cut at the pit. They stick a meter on it and it gives them the measurement. I got them to connect my first outlet, and i did the rest.Loanrangie wrote:Thats what i thought, helstra can kiss my a..e, i ran all my cable anyway.
For some reason when i connected to the blue/ white pair i couldnt get any dial tone, i tried all combinations but still no good,.Davidh wrote:By default, Telstra try to use the blue & white pair for the 1st line, with the red & black being a spare pair in case the blue & white develops a fault.
If its a adsl line it should have 80-90v on it. Check you have the voltage at the incomeing point and go from there. What exactly is it doing are you adding a new point or is it a new line?Loanrangie wrote:ADSL, if i had some ali clips i would have done that, will a test light work ?
i was sure it was red/ black before i cut the wires and i'm realy stumped why i cant get a tone and the bloody tech was suppose to be there at 3 today so i may have to rig it myself anyway.
Actually its 110 ringing voltsphippsy wrote:Hold onto the white wire, then get someone to ring and hold onto the blue, 50v of fun...
Means I missed out the other day when I earthed myself whilst holding the white...booflux wrote:Actually its 110 ringing voltsphippsy wrote:Hold onto the white wire, then get someone to ring and hold onto the blue, 50v of fun...
Normal voltage from the exchange is 48-52V DC. Ring is normally 75V AC. ADSl does nott change this as the DSL signal highband signal imposed over the normal speech signal.booflux wrote:If its a adsl line it should have 80-90v on it. Check you have the voltage at the incomeing point and go from there. What exactly is it doing are you adding a new point or is it a new line?Loanrangie wrote:ADSL, if i had some ali clips i would have done that, will a test light work ?
i was sure it was red/ black before i cut the wires and i'm realy stumped why i cant get a tone and the bloody tech was suppose to be there at 3 today so i may have to rig it myself anyway.
Mate since the privatisation of telstra has seen the increased use of subbies there are more an more lines no longer being done on white blue. It seems they pick whatever pair they wish.Sportage wrote:Normal voltage from the exchange is 48-52V DC. Ring is normally 75V AC. ADSl does nott change this as the DSL signal highband signal imposed over the normal speech signal.booflux wrote:If its a adsl line it should have 80-90v on it. Check you have the voltage at the incomeing point and go from there. What exactly is it doing are you adding a new point or is it a new line?Loanrangie wrote:ADSL, if i had some ali clips i would have done that, will a test light work ?
i was sure it was red/ black before i cut the wires and i'm realy stumped why i cant get a tone and the bloody tech was suppose to be there at 3 today so i may have to rig it myself anyway.
The standard for the incoming line on a 2 pair cable is indead Blue and White, with the Red and Black used for a second sevice.
You may have had Dial tone on the Red and Black for a couple of reasons.
1. The house at one time had 2 services connected and the first one had been cancelled leaving working service on R&B.
2. The W&B was faulty so service moved to R&B.
Cable coming from the street will be a hard sheathed black cable. Internal cable will usually be white with a soft cable. To see if your problem is internal or outside in the Telstra world, find the first point where the black cable comes in if you can't get dial tone across any combination on the end of this cable with the internal cables disconnected, you will be waiting on Telstra. If it works there then Telstra won't help.
Alan
ex-Telstra tech.