Repeated missed call emails from spoofed numbers

[garrick.cobcroft@gsconsul]

Hi all,

Over the past few days I've been bombarded with email from 3CX about missed calls. The calls always follow the same format, see sample below:-

You missed a call:

From: 0423251124
To: "100" - "Garrick" "Cobcroft"
Received: "Wednesday, April 10, 2024 2:06:56 PM"
Ringing: "00:00"

Note the ring time of 00:00. The caller ID is a valid number, but is not the actual caller. The caller ID does change every few hours, and I have called a couple of them back to verify I'm not missing actual calls. In all cases the person has said that they've never tried to call me. The callers appear to be genuine businesses, and seem to be local to me. The nofications only come via email, there is no missed call alert on the desk phone, Android app or PWA.

Is there a security setting I can change to stop this happening, without blocking the numbers?

Thanks,
Garrick

 

[OlegR_3CX]

Hi Garrick.
Do you know those numbers?
Maybe you can contact your provider and ask them to see why the calls were placed and then ended so fast and if they have a feature to stop those calls and not send them to the Phonesystem.

 

[garrick.cobcroft@gsconsul]

Hi OlegR, Thanks for the reply. No, I don't know the numbers at all. But as I say, for the few that I've called back they are legitimate numbers of people who don't know me.

I have verified that the emails are genuinly coming from 3CX, but I'm not sure they are calls via the provider. If they were actual calls that ended in less than 1second, wouldn't they still show in the call logs? There is nothing relating to the call in the logs.

 

[OlegR_3CX]

Hey Garrick, you are welcome.

I have verified that the emails are genuinly coming from 3CX, but I'm not sure they are calls via the provider. If they were actual calls that ended in less than 1second, wouldn't they still show in the call logs? There is nothing relating to the call in the logs.

If you run the report on your trunk side as well as on the 3CX, do you see those numbers in there? You could match the time too form both of the reports, i mean 3CX and your provider one.