Table of Contents
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.
