Telephone service provided by cable modems and ONTs rely on power to work properly. To ensure continued access to telephone service when the power goes out, we recommend that you check your battery on a regular basis. Instructions for testing and replacing backup batteries may be found by visiting one of the links provided below.
Cable modem customers may purchase a backup battery from any ATMC retail location and perform a self-install. Backup batteries for Fiber ONTs must be replaced by an ATMC technician. To schedule a professional installation for your backup battery or for additional information about testing and replacing your backup battery, please contact us at 910-754-4317.