The basic difference between an ILEC and a CLEC is that an ILEC
has a duty to provide a telephone service to the public whereas a
CLEC has the right to compete for that business, but is not obliged
to provide the same level of service.
All LECs must abide by the FCC regulations that affect that
class of carrier; the regulations affecting ILECs are slightly
different than the regulations affecting CLECs. Sometimes the FCC
will change the status of a CLEC to an ILEC if it serves the best
interests of the public.
An example would be if the CLEC exists in an area of the country
that is inadequately served by existing ILECs.
Thanks
Amit Singh Luthra
amitsinghluthra@yahoo.co.in