ILEC (incumbent local exchange carrier) An ILEC (incumbent local exchange carrier) is a telephone company in the U.S. that was providing local service when the Telecommunications Act of 1996 was enacted.
To call a US toll free number from Mexico, dial as follows: 800 numbers Dial 001-880-then the number 866 numbers Dial 001-883-then the number 877 numbers Dial 001-882-then the number 888 numbers Dial 001-881-then the number.o call a US toll free number from Mexico, dial as follows: 800 numbers Dial 001-880-then the number 866 numbers Dial 001-883-then the number 877 numbers Dial 001-882-then the number 888 numbers Dial 001-881-then the number.
Dial 011-52 plus the 800 number. The country code for Mexico is 52, and 011 is the calling code to dial anywhere outside of the U.S. The call may or may not go through. International long distance charges apply.ctivate the phone card and dial the toll free number using the 011-52 system. Time is deducted with each call, and there's no guarantee of a successful connection. Check with the Mexican company or business to see if it has either a U.S. phone number or a local Mexican phone number.