Fall arrives on Sept. 22, but another major change happens a day earlier for many local residents.

Beginning Sept. 21, everyone who has a 570 area code will have to start dialing 10 digits: 1-570-phone number.

This includes residents of Lansford, Jim Thorpe, Tamaqua, Andreas, Brodheadsville, and Albrightsville.

Until now, people in many 570 municipalities had to only dial the seven digit phone number.

The Pennsylvania Public Utility Commission (PUC) announced that mandatory 10-digit dialing will be required for residential and business customers within the existing 570 area code.

During the upcoming mandatory dialing period, all calls must be made using the area code plus the seven-digit number.

If only the seven-digit telephone number is dialed, customers will reach a recorded announcement stating they must hang up and redial the number using the area code plus the seven-digit number. This recording will be available permanently.

On July 15, 2010, the Commission approved an overlay plan for the 570 code, after consideration of public input and area code relief options.

An overlay plan means that once the existing telephone numbers in the 570 area code are exhausted, new telephone services in that geographic region will be assigned telephone numbers out of the new area code, which has been designated as 272.

To ensure a continuing supply of telephone numbers, the new 272 area code has been added to the 570 area code region, which generally covers the northeastern portion of the state and serves communities such as Scranton, Williamsport and Wilkes-Barre.

Beginning Oct. 21, 2013, customers in the 570 area code region requesting new service, an additional line, or in some cases, moving their service may be assigned a number in the new 272 area code.

Important facts for businesses and residents to remember during the transition:

Ÿ Your telephone number, including current area code, will not change.

Ÿ You will need to dial area code + telephone number for all local calls.

Ÿ You will continue to dial 1+ area code + telephone number for all long distance calls.

Ÿ What is a local call now will remain a local call.

Ÿ The price of a call, coverage area, or other rates and services will not change due to the overlay.

Ÿ You can still dial just three digits to reach 911.

Ÿ If 211, 311, 411, 511, 611, 711 or 811 are currently available in your community, you will still dial these codes with just three digits.