What do phone plugs look like in your country? This is how they look like here
Paul, I don't understand much about phone system but I know that in britain too, they use 2 wires in residential phone sockets. About 10 years ago I worked on a phone system in Britain and it used 3 wires. One, I believe was for the ringing. Can you explain to me more about the differences, how it works and why it changed to 2 wires?
[This message has been edited by Belgian (edited 11-03-2002).]
Two or sometimes four-wire. Four wires are used to prevent eavesdropping. (If you have picked up one phone, the other phones on the line are "dead")
The plastic pin has to do with this too. When inserted it loops the feed-through via the phone (or other equipment) inserted. Imported two-wire modems and phones give you problems when you want both phone and modem on same socket. Phones are not my cup of tea, really. Therefore I doubt I can answer any questions.
As you can see, they accept RJ-11 plugs. However, the trusted old "Rikstelefon"-sockets remain the standard in new construction, despite serving only as RJ-11 adapters.
For some reason RJ-45 has now caught on as phone plug. I installed RJ-45 sockets for this use a few years ago, when they were not normally used for this purpose. Today you can buy RJ-45 extension reels.
[This message has been edited by C-H (edited 11-03-2002).]
I've posted this before so sorry for the repeat at https://www.electrical-contractor.net/ubb/Forum9/HTML/000063.html . Here is the old (pre-1990) South African standard. There are six contact surfaces: The outer pair are line 1 and the inner pair line 2. I assume the intermediate pair (not connected in the photos) would be line 3.
RSA now used the US standard as found on the back of your PC.
As PaulUK mentioned in the thread referred to above, it is similar to the older Australian phone jacks (these appear to have an extra pin with an additional pair of contacts that makes the design asymmetric). I was lucky enough to get a look at one of those in situ recently.
[This message has been edited by Hutch (edited 11-03-2002).]
You guys sure you don't mix up stuff here? I don't want to be impolite, but I think it was New Zealand dials that were backwards, not British. And what's that stuff about Sweden having changed road sides in the 70es?????? I thought the last European country to change was Austria after Hitler occupied it in 1938!