How many wires for phone VOIP

[aveatry]

I have an long phone line from the BT socket to the living room and years ago when I installed it I had to cut off a bulky 2 into 1 adapter on the end I cut it about a metre from the 2 into 1 I then just twisted the wires back together and put some tape on it.
But now I am about to have FTTP and the phone will now plug direct into the router for VOIP - so will it work with just using the 2 wires as like now.
Thanks

 

[Bobski_7145]

Its hard to understand what your saying, but yes its only two wires for a phone line to work. Sounds like you are back feeding the living room from the router which will be fine, I'm sure the engineer will make it work if you give him a nice cup of tea and some biscuits and maybe a something with the queens head on lol.

 

[aveatry]

Its hard to understand what your saying, but yes its only two wires for a phone line to work. Sounds like you are back feeding the living room from the router which will be fine, I'm sure the engineer will make it work if you give him a nice cup of tea and some biscuits and maybe a something with the queens head on lol.

I just wasn't sure if it needed all 4 wires for VOIP.
Yes its just a long line from BT box ( now ) plugged in the front of the BT box terminating at a wired extension box next to the phone in the living room.

 

[Harry Bloomfield]

I just wasn't sure if it needed all 4 wires for VOIP.

Modern phones (and VoIP), only need the two wires..

 

[aveatry]

Modern phones (and VoIP), only need the two wires..

great thanks

 

[robinbanks]

If it's a VOIP phone plugged into a network socket on the router, it's a network device like your PC is and needs a proper network connection (could get away with using 2 pairs of a 4 pair Ethernet cable but 4 core phone wire wouldn't work because the cores aren't twisted and interference between cores would kill Ethernet's ability to work)

If it's an analog phone and all the VOIP circuitry is built into the router, the phone can work off 2 cores back to the router and they don't need to be twisted

 

[Harry Bloomfield]

If it's an analog phone and all the VOIP circuitry is built into the router, the phone can work off 2 cores back to the router and they don't need to be twisted

It is that situation, we are discussing - the VoIP adaptor, included within the router.

 

[Diver Fred]

With evolution to FTTP the conversion from Fibre (signal carried in digital format transmitted by light) takes place in your home - at the ONT (Optical Network Termination). The VoIP (speech) signal is carried on the LAN connection from ONT to Router.
The Analog speech (Voice) is extracted in the router - with a new, modern router the voice is then made available for a wire solution by a BT style socket on the rear of the OpenReach provided Router; that router also makes available a DECT* carrier for cordless phones.

*DECT is a different signal (frequency) to WiFi.

With an Analog signal from the exchange the 'copper' line impedance is expected to be less than 1000 Ohms - if OR have used 2 pairs over part of the cable route to your house it is to reduce the line impedance to be less than 1000 Ohms.

 

[Harry Bloomfield]

The Analog speech (Voice) is extracted in the router - with a new, modern router the voice is then made available for a wire solution by a BT style socket on the rear of the OpenReach provided Router; that router also makes available a DECT* carrier for cordless phones.

*DECT is a different signal (frequency) to WiFi.

That part, I will need to investigate. At the moment, I have all my many slave socket system, plugged into the VoIP socket on the router - in the loft, and the Dect base, plugged into a slave socket in the main bedroom, on the first floor. The Dect base, includes a nuisance caller filter, which I would not have, using the router Dect. I've not spotted any mention of Dect in the router spec..

 

[aveatry]

If it's an analog phone and all the VOIP circuitry is built into the router, the phone can work off 2 cores back to the router and they don't need to be twisted

Yes this is the situation

It is that situation, we are discussing - the VoIP adaptor, included within the router.

Thanks.
Sorry for any confusion if VOIP is the wrong term for my system.
The phone wire is 4 core but I only connected 2 back together after I had cut it. I cut it to pass the bulky 2 into 1 socket adapter through a hole.
A small issue now is that the 2 into 1 is a bit big to fit into the bottom of the router but if I put a new single BT plug on the end then which colour wire gos where in the new plug.

 

[Diver Fred]

I hope I made the correct assumption - in that it was the external cable that had pairs connected to together.

Once you have been converted to FTTP you can disconnect the external cabling from the master socket. just need the internal wiring if you continue to use wired 'phones.

 

[aveatry]

I hope I made the correct assumption - in that it was the external cable that had pairs connected to together.

Once you have been converted to FTTP you can disconnect the external cabling from the master socket. just just need the internal wiring if you continue to use wired 'phones.

I am not referring to the external cable here - as in the one that comes into my house from the post across the street. This cable ends at the BT master socket near the front door. But my main base DECT phone is in the living room so I just go a length of extension cable that happened to have a 2 into 1 plug on the end which I plug into the BT socket and it is that cable that I cut and only used 2 of the 4 wires which are solid wires.
It looks like this but is hard wired so i cut the cable further away. The only reason i used it is just because that is all I had at the time and it worked but the 2 into 1 that you see is a bit big for the router socket position which is right at the bottom of the router.

 

[Harry Bloomfield]

that you see is a bit big for the router socket position which is right at the bottom of the router.

My new router, has an RJ11 socket. The installer, offered an RJ11, to standard BT socket, before he left..

 

[aveatry]

My new router, has an RJ11 socket. The installer, offered an RJ11, to standard BT socket, before he left..

Mine has the standard BT socket - fine for a single BT plug but mine is that silly 2 into 1 thing and the router doesn't sit properly. Maybe the fibre man can fit me a single plug on the end.

 

[Harry Bloomfield]

Mine has the standard BT socket

Must be a router made for UK only then, what make/model is it? Mine is an Arriss NVG578Lx. It has two RJ11 phone sockets, which supports two lines/phone numbers, only one is active.