What is “Calling Line Identifier” (CLI)?


Calling Line Identifier (CLI) is an option provided by most telecommunication service provider. This option allows your phone to display the number and/or name (caller ID) of the caller who calls you.

In most cases, a small monthly fee is needed for CLI/Caller ID subscription.

If the handset(s) and base station are of different models, CLI may not work correctly.

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