Unmasking Anonymous Caller ID

[Rej]

Hi,

I was looking for a way to unmask Anonymous/Private Caller numbers in 3CX V20.

I know this can be achieved with (i think) only toll-free DID numbers. When I review the call logs from our VoIP provider (voip.ms), I noticed something during testing: when I call our toll-free number, 3CX displays the caller as "Anonymous," but the unmasked number is visible in the VoIP provider's call log (real time billing report).

Is there a way to configure 3CX to show the unmasked number? I know this is possible, as I’ve observed it with businesses like eBay and Dell. When I call them from my cellphone, which always shows as "Anonymous," they are still able to identify my number.

I’m trying to determine if we can implement 3CX in a private security dispatch center. Currently, they use an Asterisk system, which can unmask the numbers of anonymous callers.

Thanks in advance for your help!

 

[leejor]

You are attempting to "unmask" numbers that you are receiving? If that is what you are trying to achieve, it won't work.

When someone blocks their number, of course, the originating provider knows who they are and it is passed down the line towards the destination. They are simply sending a signal that they don't want their number to be shown, the terminating provider also gets that and will normally honour it. So, the number will not be sent on most calls but not to a toll free numbers, as the destination is paying for the call, so they get to see your number or the call will usually not go through.
If a call has blocked their number, then for non-toll free, or things like emergency services, it should not be passed to the destination at all. Don't expect to find it hidden in the Invite you receive.