BT4600 displays 50 full calls and logs a No Number call every 50 minutes

[NickH60]

I have a BT4600 (trio +1) which is about 15 months old. It used to work fine when I had a Vodafone Openreach line. Last summer I switched to VirginMedia Business and they have switched me to VoIP. Now every 50 minutes I see in the call log "No Number" and the log just fills up. It is like there is some sort of keepalive from the VM router which the phone is seeing as it is exactly every 50 minutes. I have an open issue with VM, but they are saying it is only BT phones which do this. I did have a set of Panasonic DECT phones and when I tried them instead, they worked fine and did not log these No Number calls. It seems it is an issue between the VM router and the BT Phone. VM just tell me to use different phones. I suspect a firmware fix/update is needed either for the router of the phone. VM tell me I am completely up to date on the router so there is nothing else available from them. What can I do on the BT phone?

[NickH60]

Bump, please.

[Keith_Beddoe]

Try the product helpdesk.

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