AT&T CL2939 user manual Troubleshooting

Appendix

Troubleshooting

Operation during a power	•	This telephone operates during a power failure
failure.		if a telephone line cord is installed between the
		telephone wall jack and the telephone base.
		You are able to answer calls with the handset,
		and dial calls using the dial pad keys and the
		REDIAL key. No other features work unless
		batteries are installed. All settings in menu
		options are retained during a power failure if
		a telephone line cord is installed between the
		telephone wall jack and the telephone base.
	•	If there are no batteries installed and the
		telephone is plugged into a telephone wall
		jack, when you lift the handset the screen
		display works using the power from the
		telephone line. For more details about the line
		power, contact your telephone service provider.
	•	If you neither install batteries nor telephone
		line cord in this telephone, after eight
		minutes, the telephone automatically clears
		the directory, call history, two-touch memory
		locations, and the last number dialed memory.
		At the same time, all settings in menu options
		change back to the default ones.
My caller ID features are	•	Caller ID is a subscription service. You must
not working properly.		subscribe to this service from your telephone
		service provider for this feature to work on
		your telephone.
	•	The caller might not be calling from an area
		that supports caller ID.
	•	Both your and the caller’s telephone service
		providers must use equipment compatible with
		caller ID service.

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