ENUM (RFC 2916) is the Internet Engineering Task Force (IETF)
protocol that will assist in the convergence of the
Public Switched Telephone Network (PSTN) and the
IP network; it is the mapping of a telephone number from
the PSTN to Internet services — telephone number in,
URL out. ENUM was developed as a solution to the question
of how to find services on the Internet using only a telephone number, and how
telephones, which have an input mechanism limited to twelve keys on a keypad,
can be used to access Internet services.
E.164 Number and DNS This text document discusses the use of the Domain Name System (DNS) for storage of E.164 numbers. More specifically, how DNS can be used for identifying available services connected to one E.164 number.
