AT&T TL74408, TL74458, TL74308, TL74358 If you are on a call during an AC power failure, using

Appendix L

Troubleshooting

•Eliminate any background noise. Noise from a television, radio or other appliances may cause the phone to not dial out properly. If you cannot eliminate the background noise, first try muting the cordless handset before dialing, or dialing from another room in your home with less background noise.

•If the other phones in your home are having the same problem, the problem is in your wiring or local service. Contact your local telephone company (charges may apply).

My cordless	•	Make sure the power cord is securely plugged into the
handset isn’t		telephone base. Plug the unit into a different, working
performing		electrical outlet not controlled by a wall switch.
normally	•	Move the cordless handset closer to the telephone base.
		You might have moved out of range.
	•	Reset the telephone base. Unplug the unit’s electrical
		power. Wait for 15 seconds then plug it back in.
		Allow up to one minute for the cordless handset and
		telephone base to reset.
	•	Other electronic products can cause interference to
		your cordless phone. Try installing your phone as far
		away from these types of electronic devices as possible:
		television sets, VCRs, or other cordless telephones.
Calls are cut	•	If you are on a call during an AC power failure, (using
off		the backup base batteries,) and AC power returns, the
		call will be ended. Detach the AC power cord before
		making or answering calls to avoid this problem. Be
		sure to plug it back in when power is restored.
	•	If a power failure happens during a call on the cordless
		handset or on speakerphone mode, the call will be
		disconnected immediately. You can still make and
		receive calls with limited functions if backup batteries
		are installed (see page 5).

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