What is Enum?
ENUM is a mechanism for mapping telephone (E.164) number to Internet resource
addreesses,and it is an abbreviation of Electronic
Internet resource addresses are specified as URIs.
Mapping is performed by DNS lookup
(Applications) can select URI according to their preference
standerdization by cooperation of
IETF and ITU
ENUM is not:
a search service
- a transport service
- a telephony service or voice encoding method