Joining telephone cables in house

The Cush

My brother's broadband connection, Vodafone ADSL, has developed a fault in recent days, voice calls OK. He reported the fault and an open-eir tech called yesterday who pointed to a fault within the house. New Vodafone modem arrived yesterday and worked OK until my brother went looking for the source of the wiring problem.

All points are wired with Cat5 cable back to a power room, including the external telephone junction box, with all cables hanging from the ceiling. The electrician who wired the house appears to have simply joined the incoming cable to the cable going to the telephone/modem point with the wires twisted together and wrapped with insulating tape and this appears to be the source of the fault. (The electrician ran 2 cables from the external telephone junction box to the power room, 1 a spare I presume)

I haven't looked at the join yet, plan to look at it tomorrow.

What would be recommend to join these wires securely?

drunkmonkey

Don't know the technical name but the eircom guy gave me a handful of these crimps and I used them to connect a shielded cat 5 cable to where the connection comes into house, you don't need to strip the wire or anyting just give them a squuze with a pliers, http://www.ebay.ie/itm/20pcs-Telephone-cable-Repair-Splice-Joiner-2-Wire-Jelly-Crimps-Connector-Block-/331999981787?hash=item4d4cbdb0db:g:CpgAAOSwYIxYAMUT

I presume any electrical trade place will have them...

The Cush

Telephone line Gel or Jelly filled crimps, yes they look the business. Thanks drunkmonkey for the quick reply.

ED E

Gelly clips are the preferred method.


BUT, I wouldnt be confident that thats the problem. Stripped and wrapped then taped will have the same electrical properties. I'd be more worried that he's created a bridge tap or has pinched the cable elsewhere. Does it run around a rake of phone sockets?

The Cush

OK, all sorted. The problem was with the cable join, badly made/loose, surprised it worked so well over the last few years. Fitted the Gel crimps and all is well, modem sync back to its previous profile.

In the process found out that the line 50v+ DC can give you a kick if you accidently earth it via your arm to the plumbing.

Now considering moving the master socket/modem into the power room from the entrance telephone point, half way back the cable to the external junction box, for tidiness.

brendanreddin

On the subject , I have an eircom master socket with a 2 sockets on the front for a computer and a phone. While the computer socket works, the phone socket does not. It's wired to the back to the L1 and L2 terminals. Any ideas?

jca

brendanreddin wrote: »

On the subject , I have an eircom master socket with a 2 sockets on the front for a computer and a phone. While the computer socket works, the phone socket does not. It's wired to the back to the L1 and L2 terminals. Any ideas?

Broadband only by any chance?

ED E

Or a new Vodafone customer? Phone goes in the back of the modem with them.

HoggyRS

brendanreddin wrote: »

On the subject , I have an eircom master socket with a 2 sockets on the front for a computer and a phone. While the computer socket works, the phone socket does not. It's wired to the back to the L1 and L2 terminals. Any ideas?

Could just be a faulty socket port. Report it to your provider and eir will replace it.

If you are a vodafone customer makes sure you have not been migrated to VOIP telephone service.

The Cush

brendanreddin wrote: »

On the subject , I have an eircom master socket with a 2 sockets on the front for a computer and a phone. While the computer socket works, the phone socket does not. It's wired to the back to the L1 and L2 terminals. Any ideas?

Assuming you're not on a VOIP products from Vodafone as mentioned previously ensure the wiring is connected to the correct terminals.

The incoming line should be connected to the L1 and L2 terminals at the rear of the NTU main housing, behind the test socket and not the L1 and L2 extension terminals at the rear of the splitter faceplate. Although this is probably not the case as you have broadband.



Also it may be possible to connect the phoneline RJ11 connector to the test socket (RJ45) on the NTU main housing (black socket on the pic below), behind the faceplate, bypassing the faceplate to test for a dial tone. Someone may be able to confirm if this is possible.

The Cush

The Cush wrote: »

Now considering moving the master socket/modem into the power room from the entrance telephone point, half way back the cable to the external junction box, for tidiness.

Just an update on this, we moved the NTU and modem from the entrance phone point to the power room at the weekend, entrance phone point is now an extension off the NTU.

Downstream attenuation is 39.5dB which drops slightly to 40dB once the phone is connected to the extension phone point.

daraghwal

I realise this is an old thread but does it matter which wire coming in is attached to L1 and L2 or are they interchangeable?

The Cush

daraghwal wrote: »

I realise this is an old thread but does it matter which wire coming in is attached to L1 and L2 or are they interchangeable?

No it doesn't matter.

daraghwal

The Cush wrote: »

No it doesn't matter.

Thanks. My friend's main socket looks like the one two posts back but has a single port faceplate with nothing coming out of it. Line comes into the back at L1 and L2. An in-house extension comes off L1 and L2 in the faceplate and the vodafone modem/router is attached at the end of this extension. Is this correct? There is no other way to plug in the modem into the main socket. It needs to be on the extension in the next room due to socket for modem. Is this correct or can wire an easier way? Cut out the middle man NTU altogether? It is just broadband so no need for the extra phone socket. Very easy for us to move around things in the attic also.

The Cush

daraghwal wrote: »

My friend's main socket looks like the one two posts back but has a single port faceplate with nothing coming out of it. Line comes into the back at L1 and L2. An in-house extension comes off L1 and L2 in the faceplate and the vodafone modem/router is attached at the end of this extension. Is this correct?

Sounds right.

daraghwal wrote: »

There is no other way to plug in the modem into the main socket. It needs to be on the extension in the next room due to socket for modem. Is this correct or can wire an easier way? Cut out the middle man NTU altogether? It is just broadband so no need for the extra phone socket. Very easy for us to move around things in the attic also.

If the main socket is/will no longer used and the wiring is easily transferred to the dual socket, go for it. Tape up the ends of the incoming cable until you're connecting them up.

I assume this is the socket at the extension - https://kedingtondirect.com/product/pressac-adsl-centralised-filter-ntu-kit/

daraghwal

The Cush wrote: »

Sounds right.



If the main socket is/will no longer used and the wiring is easily transferred to the dual socket, go for it. Tape up the ends of the incoming cable until you're connecting them up.

I assume this is the socket at the extension - https://kedingtondirect.com/product/pressac-adsl-centralised-filter-ntu-kit/

The one in the PDF is the main socket in the house. The one at the end of the extension is not a dual plate. It is an ordinary phone socket. We may have touched the wires together. Is that bad?

The Cush

daraghwal wrote: »

We may have touched the wires together. Is that bad?

No, it's ok.

daraghwal

The Cush wrote: »

No, it's ok.

And the extended socket is ok being just an ordinary phone socket you can buy in the shop, yes?

The Cush

daraghwal wrote: »

And the extended socket is ok being just an ordinary phone socket you can buy in the shop, yes?

Can't see why not.