（单词翻译:单击）
ISO
International Organization for Standardization1
ITC
independent telephone company
ITU
International Telecommunications Union
IVR
integrated voice response
ILEC - Incumbent2 Local Exchange Carrier. The existing local exchange carrier in any given area, as opposed to CLECs.
Independent Telephone Company - A telephone company not affiliated3 with any of the original Bell telephone companies. See RBOC.
Integrated Services Digital Network (ISDN) - A high performance, digital phone circuit available from most regional telephone companies that allows for voice and data to be transmitted on the same line, producing fast, noise-free connections.
Internet - A collection and interconnection of tens of thousands of independent global networks.
Internet Relay Chat (IRC) - A popular program that allows users all around the world to communicate live, or chat, with other users.
InterLata Carrier - The carrier that provides your telecommunications service between your LATA and another LATA. Generally called "Long Distance Carriers."
InterNIC (Internet Network Information Center) - The centralized organization run by the National Science Foundation that provides various administrative4 services for the Internet, including Domain5 Name registration6.
IntraLATA - Telephone services within the boundaries of a local access area. See LATA. Generally known as "Local Telephone Companies."
IP Address - A 32 bit address (four bytes separated by periods) that defines the location of a host on the Internet.
IRC - See Internet Relay Chat
ISDN - See Integrated Services Digital Network
ISP - Internet Service Provider. A company that provides connection to the Internet.
