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How Caller ID Works: Common Questions and Answers

https://www.onsip.com/blog/how-caller-id-works-why-it-might-take-months-to-update
Категория: Caller ID  
Caller ID is a widely used phone system feature that identifies an incoming caller by a name and phone number. The feature isn't perfect, and it can sometimes misrepresent a caller's identity. But for the most part, caller ID is a valuable piece of information.

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