This topic

No Caller Display Help

chestermills — Wed, 22 Jan 2025 12:28:10 GMT

Hi, can anyone please help, I am asking on behalf of my 87 year old father in law. We have just recontracted his broadband and phone service, and he has now switched to the digital voice service. I have installed the digital voice adaptor and plugged my father in laws cordless phones into the adaptor, which are the BT4000 Twin, they work fine for incoming and outgoing calls but now he doesn't get caller display when that worked fine before the switch. The phone display just says incoming call. I have been on My BT and switched caller display off and back on again but still no caller display. My father in law relies on the caller display to know when family members call. Can someone please sort this out for him. Many thanks in advance Nigel.

Re: No Caller Display Help

Keith_Beddoe — Wed, 22 Jan 2025 12:36:17 GMT

@chestermills

Caller display is not enabled by default on BT Digital Voice. It has to be added via MyBT.

See https://www.bt.com/help/landline/digital-voice--how-do-i-use-my-calling-features-

There was also a reported issue where it did not work via the DV adapter, for some phones.

Try plugging the base unit into the phone socket on the back of the hub, and see if it works.

Re: No Caller Display Help

chestermills — Wed, 22 Jan 2025 12:44:07 GMT

Hi @Keith_Beddoe thanks for the quick response, I have been onto My BT and caller display was already ticked so I switched it off and then switched it back on but it's still not working.

Re: No Caller Display Help

Keith_Beddoe — Wed, 22 Jan 2025 12:38:41 GMT

See my last post, there was a reported issue with the DV adapter.

Try plugging the base unit into the phone socket on the back of the hub, and see if it works.

Re: No Caller Display Help

chestermills — Wed, 22 Jan 2025 12:45:07 GMT

Sorry, I just seen the end of your post. I have just tried plugging the phone directly into the hub, but still no caller display.

Re: No Caller Display Help

Keith_Beddoe — Wed, 22 Jan 2025 12:47:58 GMT

Dial *#234# from the phone, and see what it says.

Re: No Caller Display Help

Keith_Beddoe — Wed, 22 Jan 2025 12:57:17 GMT

If it says its not enabled the dial *234#

Re: No Caller Display Help

chestermills — Wed, 22 Jan 2025 13:03:41 GMT

Hi, which ever code I use it says you have entered the feature code incorrectly.

Re: No Caller Display Help

Keith_Beddoe — Wed, 22 Jan 2025 13:41:12 GMT

They were the codes for PSTN, perhaps they do not work on DV. Need someone with DV to try the codes.

Perhaps another forum member with DV can try them?

Re: No Caller Display Help

Keith_Beddoe — Wed, 22 Jan 2025 13:45:59 GMT

I am also not sure hew long any change of facility would take. On PSTN it would take 24 hours, but I would expect DV to be quicker. The CLI is sent as an audible data burst at the start of ringing. I would expect this to be generated at the home hub end, as tones sent over VOIP, do not work reliably.

It may be worth restarting the home hub.

Re: No Caller Display Help

chestermills — Wed, 22 Jan 2025 14:00:27 GMT

Thanks, I will try that tomorrow when I go to my father in laws.

Re: No Caller Display Help

Keith_Beddoe — Wed, 22 Jan 2025 14:22:40 GMT

Make sure its left enabled on MyBT. Its possible it may take a few hours for any change to take place.

Unfortunately, I do not know how its implemented on DV, as I was only involved with PSTN, and that was fairly short, when BT had the idea of making everyone multi skilled 🤣

Re: No Caller Display Help

Keith_Beddoe — Wed, 22 Jan 2025 14:42:02 GMT

For anyone looking for some bedtime reading, I can across this Ofcom consultation for CLI https://www.ofcom.org.uk/siteassets/resources/documents/consultations/category-2-6-weeks/106361--guidelines-for-cli-facilities/associated-documents/secondary-documents/guidelines-for-cli-facilities.pdf?v=322707

Re: No Caller Display Help

chestermills — Thu, 23 Jan 2025 16:07:48 GMT

Hi All, for information I tried power resetting the router but the issue still remained. I gave BT faults a ring and it appears that very occasionally when a line is migrated to digital voice the caller display service is not activated, so you will need to ring BT faults and they will raise an order to provide caller display free of charge and this will sort the issue. My father in law has now got his caller display back on. Many thanks, for all of the previous advice and help, Nigel