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Charter Phone will work with most monitored home security systems. However, if you have a home security service, we recommend that you test the proper operation and communication aspects of the alarm system after your Charter Phone installation.

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Charter provides emergency 911 services, much like traditional telephone companies. Should you ever need to access emergency services—fire, police, or ambulance—just dial the familiar digits 911, using your Charter Phone service. Your call will be routed directly to the nearest public-safety operator. Emergency services will be able to quickly find you because your telephone number and address are electronically routed to the operator the moment your call goes through.

As with your cordless telephones, Charter Phone equipment will not operate in the event of a power outage, and you will be unable to make or receive calls, including 911 calls, unless at the time of ordering service you chose to have a battery-slotted phone modem installed and purchase a battery backup.

The backup battery is designed to ensure the availability of calling, including 911 calling, for up to eight hours of standby time and approximately five hours of talk time, in the event of a power outage.

Customers who did not choose the battery-slotted phone modem at the time of ordering service can upgrade at anytime by calling Charter Customer Care at 1-888-438-2427.

If you plan to move and need to change your service address, please call Charter Customer Care at 1-888-438-2427 so that we can properly move your service to ensure that 911 calls are properly routed. Do not move the telephone modem (Multimedia Terminal Adaptor) installed in your home to another location.

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