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I got a call from an unknown number, more specifically, a no caller ID number. I’m not the guy who gets a lot of calls from a no caller ID phone number, and usually, when I got one is typically the hospital, nothing suspicious. I know in Canada and many other countries, carriers allow us to hide our numbers without any additional fee.

I'm currently researching ways to unmake a no caller ID number with Asterisk if possible. After digging online, the topic is not well documented. I know it’s possible, and they are some company that offers this service like TrapCall and Opencnam.

How can I trap a call by myself?

Other mentions: In Canada, it’s legal to trap a call but not in all countries.

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  • "How can I trap a phone call" is a google search term with quite a few hits.
    – schroeder
    Nov 14, 2020 at 8:37

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