Landline phones which work with router model THG3000

[noblerinthemind]

Hi, I had Fibre 2 installed (by Openreach engineer) on Friday and since then have not been able to receive incoming landline calls. People ringing my number get a ringing tone but the handsets don't ring and the call is not logged as a missed call. I have got a dial tone and can make outgoing calls on my current handsets.
I assumed the problem was that my handsetswere too old so I purchased some new ones, which were marketed with 'digital' in the title, but it was not until I read the instruction manual that it stated they were for analogue landlines. (And they don't work either)
I am not clear if I need a VOIP phone or a VOIP adapter to make this system work - there don't seem to be many available and they all seem very expensive. I found a post on the forum which said the Vodafone's routers contain an ATA (analogue telephone adapter) but post was from a few years ago so may no longer be the case. Vodaphone's bumph seems to suggest I just need their little adapter with the green end which goes into the modem.
Please can anyone suggest/recommend a reasonably priced set of landline phones (double, or preferably triple) which actually work with the router?!
Alternatively can anyone confirm if it is normal to have a dialtone/be able to make outgoing calls on a non-compatible phone, or is it an indicator that my phones are actually compatible but there is a fault specifically with incoming calls on the line?
TIA

[Ripshod]

DECT phones are the standard analogue input and so is the output from the router so not a problem there. The "digital" part simply comes from the digital radio signal that connects the handset to the base.

Did you use the standard dsl modem lead that comes with the router to connect to the phone, as is now advised by vodafone? 

[noblerinthemind]

Hi, thanks for your reply. It was all set up by the Openreach engineer. He used stuff sent by Vodaphone apart from the router's power cable, as previous one fitted and was already in place.  All I have done is substitute some different handsets into the same wiring set up and check whether it made any difference whether plugged into (green) telephone socket 1 or 2 on the router (it didn't).

[Ripshod]

Check that the installed phone cable plugs have 4 pins on each end. If not you can order a 4 wire rj11 cable from ebay, or wait a while for someone to post regarding an adapter from amazon that you can use the original standard phone cable with. 

[Jayach]

I don't think the 4 pin wire will make any difference, as the THG3000 phone RJ11 connections have only 2 pins.

Are you using the "VoIP adapter" or just a cable, as it sounds like you are missing the "ring/bell" signal?

Have you tried ringing your number from a mobile, then picking up the landline phone and see it the call is there and you are just not getting the ring?

[Ripshod]

The newer cables with the direct connect info have 4 pins, and as in my case work fine without an adapter. No sense recommending an additional purchase if it's not needed. 

[Jayach]

@Ripshod 

Did you ever try with a 2 pin cable (centre 2 pin connected).?

[Ripshod]

I did as mine came originally with the 2 wire - no ringer. Got a cheap 4 wire from ebay and it worked great.

The sockets on the back of the router only have 2 pins but it's not about that - it's about the way the wires are cross connected. 

[Jayach]

Difficult on see how that would help, as there are only 2 connectors at the THG3000, but if it worked for you, that is fine. I just don't think that will be the case for everyone.

As for the lack of ring, that is because some phones require the ring signal and without the "VoIP adapter" with a capacitor that is not provided.

Vodafone now appear to be sending them to anyone on digital voice who require it. (judging by other posts on here)

[Ripshod]

There was a while where in the instructions vodafone said to use the supplied modem lead to connect the phone. In those cases a 4 wire lead was supplied. Maybe the capacitance of the cable itself provides the bell signal.