AT&T CL2939 user manual Troubleshooting

Appendix

Troubleshooting

My calls fade out or cut in	•	If you are using the handset when this problem
and out when I am using		occurs, try unplugging the coiled handset
the telephone.		cord and firmly plugging it in the handset and
		telephone base again.
	•	If you are using the speakerphone when this
		problem occurs, eliminate any background
		noise. Noise from the television, radio, or other
		appliances might cause the speakerphone to
		cut in and out. Try pressing MUTE when you
		are not speaking to eliminate the background
		noise.
	•	Disconnect the telephone base from the
		telephone wall jack and plug in another
		corded telephone. If calls are still not clear, the
		problem is probably in the wiring or telephone
		service. Contact your telephone service
		provider (charges may apply).
	•	If you subscribe to high-speed Internet
		service (digital subscriber line - DSL) through
		your telephone line, you must install a DSL
		filter between the telephone line cord and
		the telephone wall jack (see Telephone
		installation on page 8). The filter prevents
		noise and caller ID problems caused by DSL
		interference. Please contact your DSL service
		provider for more information about DSL filters.
I hear other calls when	•	Disconnect the telephone base from the
using the telephone.		telephone wall jack. Plug in a different
		telephone. If you still hear other calls, the
		problem is probably in the wiring or telephone
		service. Contact your telephone service
		provider (charges may apply).
appears on the screen. •		The batteries need to be replaced. Remove and
		re-install new alkaline AA batteries (purchased
		separately).
Display screen is blank.	•	Make sure alkaline batteries with enough
		charge are installed.

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