I'm troubleshooting a friend's new FTTC install, didn't see the van but it appeared to be one of the third party contractors.
Before:
Drop wire to master socket NTE5 at front of flat, one extension wired off this to an extension socket in the computer room. No other sockets. Telephone working in both sockets. No existing broadband service.
After:
New master socket NTE5 installed on the other side of computer room (where PC is) with MK2 VDSL SSFP. ECI modem connected to this. New cable installed from existing extension socket to this new socket.
Assumptions:
I haven't had a chance to investigate the wiring yet but I assume that the engineer crimped the incoming drop wire to a pair, which runs to the old extension socket, and then crimped that to a pair from the new cable to the new master socket. Then, using the other spare pair, wire the extensions back to the old extension socket and old master, I believe the term is "back fed" which I'm familiar with from my own set up.
The problem:
After install, a phone plugged into any of the sockets produce no dial tone:
new socket
new socket's test socket
old extension socket
old master socket
old master's test socket
The DSL light on the modem is on and the router has made a successful connection to the Internet, but at extremely slow speeds (7.5 Mbps on wired speed tests). Estimated speeds given were 69Mbps or thereabouts.
In an attempt to find the IP profile, BT Speed checker diagnostic states the following:
"Your speed test has completed and the results are shown above, however during the test an error occurred while trying to retrieve additional details regarding your service. As a result we are unable to determine if the speed you received during the test is acceptable for your service. Please re-run the test if you require this additional information."
Questions:
How is it possible for the Internet to work but not the phone, even when plugged into the test socket on the new master NTE5? Is it possible that the engineer failed to connect the voice pair at the green box?
Is the non-working phone the likely cause of the slow speeds?
I'm trying to determine if the issue is with end user wiring or some external factor. I plan to visit and check the wiring for myself when I get a chance.