CLEC: retail switched access lines provisioned over ILEC services

ILEC is an acronym for Incumbent Local Exchange Carriers.
CLEC is an acronym for Competitive local exchange carrier
UNE is an acronym for unbundled network element.
UNE-P was the combination of ILEC loop UNE, switching UNE, and transport UNE.
ILECs report the number of UNE-L they provide to CLECs but do not convert any high-capacity UNE-L, such as DS1 UNE loops, into voice-grade equivalents. By contrast, CLECs report the number of switched access lines their retail customers purchase which the CLEC provisioned over UNE-L obtained from ILECs. Note, however, that a CLEC might use UNE-L only to provide broadband Internet access connections.