- Local Exchange Carrier. A company providing local telephone service. The incumbent LEC (ILEC) is the local telephony company (telco) in place prior to competition, which introduced one or more competitive LECs (CLECs). See also carrier.
- LAN Emulation Client. In LANE (LAN Emulation), an end system or endpoint.The LEC connects to the ATM network over a LANE user-to-network interface (LUNI). See also ATM, LANE, and LUNI.
LEC - Computer Definition
(1) (LAN Emulation Client) A software driver that provides LAN emulation (LANE) in an ATM network. It resides in an ATM end station or in a computer system that provides the LAN to ATM conversion, often known as a LAN access device. See LANE.
(2) (Local Exchange Carrier) An organization that provides local telephone service within the U.S., which includes the RBOCs, large companies such as GTE and more than a thousand smaller and rural telephone companies (approximately 1,300 in total). A LEC provides service from the customer premises to its local exchange (central office) within a local geographic area. See LATA, CLEC and ILEC.