Help with wiring BT mastersocket

[trowelhead]

The new openreach nte sockets have krone idc and are not marked for pbx like you said. engineering memos say it's perfectly fine to terminate dropwire onto them.

It will work and it will work for 10, 15, 20 years. Longer than the dropwire will last. You are the king of theory, as we are aware, but we are the ones doing it in practice every day mate.

Then can we assume this is a typo then (about the wire size) ?

If it is new
Cable it does not matter weather it's drop wire of any number. Or down lead they all use 1.5mm copper with the orange white as the first pair which in a normal residential install the dial tone will be on the orange white it does not matter which way around they are terminated but traditionally the orange should be on the a terminal on the back plate, if you do not have dial tone when connected you have probably splayed the connectors out and will not work so you need a new socket and the proper krone tool

Read more: //www.diynot.com/forums/alarms...bt-mastersocket.340210/#2542549#ixzz29LiVhga8
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[bernardgreen]

You are the king of theory, as we are aware, but we are the ones doing it in practice every day mate.

So explain why the BT engineer who installed the line to this cottage in July this year used jelly crimps to connect the drop wire ( 2 pair aerial direct from DP ) to internal cable ( two pair blue-orange green-brown ) at the point where the drop wire enters the building. The jelly crimps are housed in a BT85B box, the PCB has no components fitted. The NTE 5 is 6 inches away from the BT85 and has IDC for the A and B incomers.

I was quite happy for the drop wire to run the 6 inches to the NTE 5 so why the ( in your experience ) un-neccessary change to internal cabling ? Why not the drop wire directly into the IDC in the NTE 5

Yes my theoretical knowledge after more than 40 years as an electronics design engineer ( 22 in telecoms, ) is wide spread and well founded. But I too have worked on external plant, a good designer needs first hand experience of how the equipment (s)he designs is used in the real world.

Very often very good technicians do a very good job but are aware of why the procedures they have to follow are necessary.

 

[cajar]

It's not up to me to explain why someone else does something. Sometimes BT engineers do it the way they've always done it.

Dropwire conducters and internal wiring are both 0.5mm, we have been terminating dropwire on IDC blocks for a long time and never had any problems.

Ask any BT engineers where noise faults are commonly found and not one of them will say dropwire 10b terminated onto krone terminals. If the theoretical boffins in BT had evidence that it did cause a fault they would make it a quality contravention to install dropwire straight onto a socket, but it is not. That is all

 

[ayp]

cajar wrote:
The new openreach nte sockets have krone idc and are not marked for pbx like you said. engineering memos say it's perfectly fine to terminate dropwire onto them.

It will work and it will work for 10, 15, 20 years. Longer than the dropwire will last. You are the king of theory, as we are aware, but we are the ones doing it in practice every day mate.


Then can we assume this is a typo then (about the wire size) ?

If it is new
Cable it does not matter weather it's drop wire of any number. Or down lead they all use 1.5mm copper with the orange white as the first pair which in a normal residential install the dial tone will be on the orange white it does not matter which way around they are terminated but traditionally the orange should be on the a terminal on the back plate, if you do not have dial tone when connected you have probably splayed the connectors out and will not work so you need a new socket and the proper krone tool


Sorry for typo
Realised once I had submitted it should be 0.5 mm