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.
1 If calling a US number that is located in Mexico, dial 1 and then the full number, including area code (example, 1-213-555-5555). 2  These dialing instructions apply if you are calling from the US or Canada to Mexico, using a telephone with a US or Canada number, whether it is a land line, cell phone or Internet phone.o call Canada or US from the cell is about $1 Dollar per minute but still a lot cheaper than using your US or Canadian phone at $2.50 per minute. Please note, when calling a Mexican cell phone from the US or Canada, there is the normal long distance charge + a Mexican sur charge for the cell call.