ILEC (incumbent local exchange carrier) incumbent local exchange carrier incumbent ILEC incumbent local exchange carrier ILEC (incumbent local exchange carrier) ILEC ILEC incumbent local exchange carriers ILEC (incumbent local exchange carrier) ILEC (incumbent local exchange carrier) incumbent local exchange carriers incumbent local exchange carrier ILEC (incumbent local exchange carrier) ILEC (incumbent local exchange carrier) incumbent local exchange carriers ILECs ILEC ILEC (incumbent local exchange carrier) incumbent local exchange carrier