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Old 5th Jun 2019, 10:08 pm   #1
Grommett
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Default RTT 56B not ringing.

Apologies if this has already been covered. A friend picked up this phone for me at a vintage fair. It has been converted and plugs in to my virgin hub and I can dial out and talk.

When I call it from my mobile, it doesnít ring. If I pick up the handset while calling from the mobile, the call connects and I can talk.

It just seems that the bells arenít working. I donít know if itís because the bells are faulty or if the hub simply doesnít provide enough power for the bells? My more modern phone rings fine.

I would love to get it working so thanks in advance.
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Old 6th Jun 2019, 12:58 am   #2
rambo1152
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Default Re: RTT 56B not ringing.

I may be way off here but is the telephone service from the hub presented on a standard BT socket, or is it a small RJ11 and they have supplied an adaptor?

Depending on how the Belgium phone was converted, it may need a capacitor to couple the ringing signal on pin 3 of the plug, that would explain why your modern phone rings.
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Old 6th Jun 2019, 8:22 am   #3
Grommett
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Default Re: RTT 56B not ringing.

They supplied an adapter so you could be right. Can you give me any more info on what type of capacitor and where/how to fit it?

Thanks

Ian
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Old 6th Jun 2019, 8:37 am   #4
Dave Moll
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Default Re: RTT 56B not ringing.

If you have a spare UK ADSL filter to hand, try inserting that between the 'phone's plug and the socket it's plugged into. Most of these include a ringing capacitor to the 'phone outlet.
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Old 6th Jun 2019, 11:17 am   #5
AC/HL
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Default Re: RTT 56B not ringing.

It's actually completely separate from the hub, just a POTs line from the street cabinet. It will have a master LJU.
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Old 6th Jun 2019, 1:38 pm   #6
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Default Re: RTT 56B not ringing.

Quote:
Originally Posted by AC/HL View Post
It's actually completely separate from the hub, just a POTs line from the street cabinet. It will have a master LJU.
I suspect the OP is a minority of VM customers with FTTP, and a telephone service provisioned over VoIP
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Last edited by rambo1152; 6th Jun 2019 at 1:48 pm.
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Old 7th Jun 2019, 4:35 pm   #7
Grommett
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Default Re: RTT 56B not ringing.

Hi Graham.

I tried the adsl filter and it worked! Amazing!
I am really pleased, you really know your stuff.
Thanks 🙏
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