eCallChina has very good phone cards with cheap rate calling from area code 636.
Local access number has less operation cost than toll free number, so usually calling from local access number has cheaper rate than from toll free number. We have local access numbers in area code 636 to call Use our local phone cards call will save your money.
If you have cellular phone plan with unlimited free domestic long distance in weekend and night, then you can take advantage of it to call any local access numbers in other states to get more minutes. Otherwise, you have to call from toll free numbers.
To avoid running up unwanted toll or long distance charges when calling local access numbers, be sure to check the "local" access number you are using. It is always up to the consumer to verify that the number they are dialing is a local call. Consumers who do not check the number before calling run the risk of incurring unexpected phone charges. Customers are responsible for charges associated with the dial-in number they select.