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 you are dialing from the US, you will first dial 011 52, then skip the 01, 044, or 045, and then continue to dial the area code and phone number. 2  Altogether the number should look something similar to this: 011 52 55 XXXX XXXX.. Use Skype or Google Voice to call or text phones in Mexico. You can either call landlines or cell phones directly from Skype or Google Voice, or you can make calls while both of you are online. Go to Skype or Gmail and open up an account and download their app on your computer or your phone.