On a simple basis, as originally wired, the E-Side and the D-Side are connected "straight through" in the PCP Cabinet.

The ADSL connection/feed is done directly within the Exchange, with no changes to the PCP wiring.

So still straight-through the PCP.

--------------------------

For most VDSL connections, the equivalent to the ADSL Exchange equipment is provided in the (new) FTTC, with Fibre from the Exchange (or even another Exchange) providing a multi-path, high speed link to the Web.

Link cables are also added, between the FTTC and the PCP - connected etc to individual feeds in the FTTC - but NOT connected in the PCP.

As each individual subscriber chooses to upgrade to VDSL, the PCP straight-through E-D connection is broken.

The E-side is then connected to one pair of Link Wires to the FTTC; followed by the D-side being similarly linked to the FTTC, thus picking up the VDSL signals.

So the routing is now-

Exchange (for phone etc) ~ Existing E-Side to PCP ~ PCP via E-Side Link to FTTC ~ VDSL ~ FTTC to PCP via D-Side Link back to PCP ~ PCP via existing D-Side to house.

The modified D-Side carries both VDSL and traditional phone, alarms etc

The modified E-Side carries the traditional phone, alarms etc - no VDSL.

Thus it is easy to get wires mixed up, bearing in mind that there are hundreds of them, take a close look the next time you see a PCP being worked on - in the cold and wet or hot and dry.

There are minor complications; but better not mentioned at this stage.

Edited by deleted (Sat 02-Dec-17 07:08:10)

If that happens again, hopefully unlikely, try ringing 17070 and listen carefully to the Phone Number - it probably would have been for that other line.

17070, if available, also gives you access to the Quiet Line Test, mentioned frequently.

Worth being aware of it and the implications of any noises etc heard.

I did use 17070 and it did have the other persons phone number, Sky support told me to do that after I explained the fault.

Did some Googling when it first happened and came across another person who had a very similar problem, he was unlucky though and I believe his line was crossed with the his local (And very busy) Chinese takeaway

Ah, interesting. Thanks for the in-depth explanation.

So, I had an OR engineer round on Saturday, no more noise on the line but speeds are still below prediction.

I have left the line a few days before digging deeper but I'm still not overly impressed with performance.

Line length is about 300m and DSLChecker predicts between 53 and 74 but I'm only seeing 40 on a good day, pictures are attached, what does everyone think?

https://imgur.com/a/N1AqO

A split pair, or faulty port perhaps.

It might be worth trying to get them to book a Broadband Boost engineer, if you're quite sure it's nothing at your end.

PS That cabinet is definitely not PC100 inside.

Edited by troublegum (Wed 06-Dec-17 23:13:55)

In reply to a post by troublegum:

A split pair, or faulty port perhaps.

It might be worth trying to get them to book a Broadband Boost engineer, if you're quite sure it's nothing at your end.

PS That cabinet is definitely not PC100 inside.

I think I may do that.

Nothing at my end, modem is plugged directly into the NTE5 Test Port, don't even have a phone let alone an extension connected.

What do you mean by "Not PC100"

�PC100�s are the old screw type cabinet terminations.

Tricky to terminate correctly, especially since they stopped providing the correct gauge jumper wire some years back.

Notorious for 1 leg dis faults.

I'm beginning to think that the cable from the DP to my NTE is bad, it has 3 GPO JB's in it

the DP is right above the front door, so it's not exactly a long run

Though clearly not �good practice�, it�s not always visible bits that are the issue.