Will 10-digit dialing affect devices programmed to use 7-digit dialing?

An overlay is an addition of another area code to a region based on its population. Since our area has received a surge of growth, The Tennessee Public Utility Commission is adding a second area code for new phone lines only.

Everyone making calls in the local area will be required to dial 10 digits for all calls, including local calls starting in August of 2025. However, if you already have a phone line using a 423 area code, your number will not change. Only new phone lines established after March 5, 2025, may have a 729 area code.

Yes, any systems in place programmed to use 7-digit dialing will need to be updated to use 10-digit dialing starting in August of 2025. This could include security systems/gates, fire systems, medical monitoring devices, fax machines, call forwarding settings, ankle monitors and more. Phone numbers that have been saved in landline phone equipment and mobile phones will also need to be updated to include 10 digits.

Yes. Starting August 5, 2025, you must always use the area code plus the number when making local calls, even if the person you are calling has the same area code as you.

No, the price of a call, coverage area or other rates will not change due to area code.

You may have a cordless handset that’s been left turned on. Make sure all of your home phones are turned off, then try again.

Each message can be up to three minutes long.

Fi Phone includes many popular features including voicemail, call forwarding, call blocking, call waiting, spam stop, speed dialing, three way calling, call transferring and more. And, affordable domestic and international calling plans are also available.

Yes. You can easily forward voice messages to another mailbox by pressing 5 while listening to a voice message from any phone, or by accessing your voicemail online via the CommPortal.

Yes you can!

To answer an incoming call while on a call, press the “Flash/Talk” button. To temporarily deactivate call waiting for a single call, dial *70 before dialing the number. To turn off call waiting during an active call, dial *70 then press “Flash/Talk.”

To send calls to a mobile phone or other number, dial *72, enter the forwarding phone number and press # to activate. To deactivate, dial *73# from your home phone.

Bring a third caller into an existing call by pressing “Flash/Talk” (placing the first caller on hold), wait for a dial tone and dial then third caller’s number, then press “Flash/Talk” again for all parties to join the conversation.

You can submit a request to have your personal or business number reinstated as a legitimate phone number that is not being used for spam calls. Submit a request at https://freecallerregistry.com/fcr/ and it will automatically be forwarded to three different reporting agencies (TNS, Hiya, and First Orion) that will take care of this for you.

Provide a real, dial-able number with every call you make – ones that will prevent them from being flagged for robocalling. They include:

• Don’t use one main calling number for multiple uses – use unique extensions for each type of call you make to customers
• Provide a real, dialable number with every call you make – calling from a “party line” that is not valid or assigned to your business can result in being flagged as spam
• Create a Caller ID profile – make sure your outbound calls show up as coming from the name of your business in the recipient’s caller ID.
• Comply with “Do Not Call” lists – vet your call lists against national DNC and TCPA requirements to ensure you’re not making unwanted calls that will be flagged as spam.

No, your phone number, including your current area code will not be affected. The new 729 area code will only apply to new phone numbers.

This change is being implemented for the entire 423 are code region, including other East Tennessee communities like Bristol, Johnson City and Kingsport.

If you do not already do so, get in the habit of dialing 10 digits for all calls before August 5, 2025. You should also be sure that your phone number includes the area code anywhere you have given your contact information, including doctor’s offices. You should also be sure any items such as business cards, stationery, pet tags, etc. include the area code on your phone number. In addition, be sure that any equipment or software is updated to accommodate 10-digit dialing.

Yes. Calls between 423 numbers and 729 numbers are still local calls despite having different area codes.