02/19/19 20:50 PM  

Caller ID - How do CLID and CNAM work together?

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SummaryHow do CLID and CNAM work together?

When a phone call is made, the Caller ID (CLID) is routed to the destination’s carrier for delivery. The Caller Name (CNAM) text data is not sent out by the originating carrier, as they are separate services.

When the call arrives, the carrier for the destination end of the call will reference the inbound number against its own local CNAM database. At this point, both a CLID number and CNAM text are usually delivered to the recipient’s (called party's) phone when it rings through.

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