Caller ID and CNAM
You can find the KB on this information here.Caller ID, as it is most commonly thought of, actually consists of two different services working together to display both the phone number and name of the caller for phone calls.What is the difference between Caller ID and CNAM?Caller ID (aka CLID) is the actual phone number calling in, whereas the accompanying text that provides the identifying name for that number is referred to as CNAM (aka Caller Name).How do CLID and CNAM work together?When a phone call is made, the CLID is routed to the destinations carrier for delivery. The CNAM text data is not sent out by the originating carrier, as they are separate services.When the call arrives, the carrier for this destination end of the call will reference that number against its own local CNAM database. At this point, both a CLID number and CNAM text delivered to the recipients phone when it rings through.What is a CNAM Database?CNAM databases (aka Line Information Databases) are official, au