I admit I haven't tried it myself, but the specifications I've seen and the statements by many people on here who I believe implicitly say either plug will fit the standard phone socket and connect to the correct pins.

As far as the OP is concerned, it really doesn't matter. Either for phone testing or broadband testing. The important thing is that the test socket is used, with nothing else connected other than the device being tested, and that all other sockets on the premises are defunct when the faceplate is off.

In reply to a post by RobertoS:

I admit I haven't tried it myself, but the specifications I've seen and the statements by many people on here who I believe implicitly say either plug will fit the standard phone socket and connect to the correct pins.

Er, an RJ11 connector (which is smaller than the ethernet RJ45) will NOT fit a BT BS6312 connector. One is square and the other rectangular. The pins are in completely different places.

However you can get cables with BT BS6312 one end, and RJ11 the other - often supplied with laptops as "modem leads".

I admit I haven't tried it myself, but the specifications I've seen and the statements by many people on here who I believe implicitly say either plug will fit the standard phone socket and connect to the correct pins.

They won't. Be careful who you believe.

All UK DSL modems that I've seen come with RJ11 cables.

RJ11 is not physically compatible with a BT socket, so impossible to directly connect without a filter. It's much smaller - check out the adaptor here:

http://www.pmctelecom.co.uk/product_info.php?product...

I agree the key thing is the test socket. My concern was that the OP had (understandably) been somewhat confused by the information about filters.

In reply to a post by MattJessop:

OK now I'm confused...

Testing phone - use filter
Testing BB - no filter

Is that correct ?

Actually, it's the other way round, but only because of the plug differences for the modem. The filter doesn't filter the modem side - that's a straight-thru connection. And if the modem isn't connected, there's nothing to filter.

Ok got it, will report back later.

Thanks all

OK unplugged faceplate, plugged into test socket and got this


Line state: Connected

Connection time: 0 day, 00:01:24
Downstream: 4,448 Kbps
Upstream: 448 Kbps
ADSL settings
Modulation: G.992.1 Annex A
Latency type: Fast
Noise margin (Down/Up): 6.1 dB / 18.0 dB
Line attenuation (Down/Up): 51.0 dB / 30.0 dB
Output power (Down/Up):19.9 dBm / 12.1 dBm
FEC Events (Down/Up):0 / 0
CRC Events (Down/Up):488 / 0

So this obviously means an internal wiring issue, right ? I can get a man in for that.

Should I just leave the modem in the test socket for the time being, or should I try to disconnect the internal cable (bearing in mind I have no idea which one of the 3 it is) so I can put the faceplate back on.

I can post a pic if needed but one cable is blue, one is orange, one is white...

Thanks again

Matt

You're ok to leave it.

Duh! Of course! Not my day

Much better! You are now getting what you should

You have checked that none of the extension phone sockets work now?

Yup no other sockets working and I have a cabling engineer coming on Friday to sort it all out.

Thanks all !