Old phones and digital voice

[MrI4n]

How can I get my BT Relate 350 phone to work on digital voice. When plugged in to either the router or home phone adapter it just terminates and incoming call. Outgoing seems to function.

[jac_95]

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[NeilO]

@MrI4n welcome to the community, I've seen reports that using a microfilter has helped when using older phones with digital voice.

Thanks

Neil

[rbz5416]

Is this a new installation of DV? Plenty of similar reports of incoming calls failing.

[MrI4n]

New install. four phones in use two work on both BB hub and the Adapter. 

Ref	Instrument	Router	Phone adapter
1	Audioline3	Incoming and outgoing working	Outgoing working Incoming no ringing can be answered
2	BT Relate 350 Caller Display	Outgoing working Incoming terminates the call	Outgoing working Incoming terminates the call
3	Philips DECT 225	All stations working	n/a
4	Currys Essentials corded phone	Incoming and outgoing working	Incoming and outgoing working

[Keith_Beddoe]

@MrI4n 

It would not appear to be an issue with the ringing, as I assume the phone rings, but drops out when you pick the receiver up?

Some helpful info https://bt-digital-voice.blogspot.com/p/bt-smart-hub-2.html

[MrI4n]

I did try that without any improvement :o(

[MrI4n]

The relate 350 terminates call instantly without any sound or delay.  

[Keith_Beddoe]

It could be that the ringer in the phone is faulty and presenting a short circuit. This would overload the ringer in both devices, and probably cause the supply voltage to drop, and terminate the call.

As it does it on the hub and the adapter, then I would suspect the phone itself.

You could try a microfilter, as it would add an additional capacitor in the ring circuit, and may prevent any overload.

[MrI4n]

I have tried that twice just to be sure. No difference. The phone was working fine on the land line. I was hoping that I might be able to change and internal jumper or something to solve the problem. It's from 1997 I think so time to put it in the bin. :o(