| http://www.w3.org/ns/prov#value | - A Directory Number (DN) is a telephone number, an example of which can include a phone number from the North American Numbering Plan (NANP), among others, which identifies a terminal, such as a cell phone, softphone, etc., or a location in the case of conventional Plain Old Telephone Services (POTS) telephones, for routing calls to and from the terminal/location over the Public Switched Telephone
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