Appendix

Troubleshooting

I cannot dial out.

First, try all suggestions in There is no dial tone on

 

 

page 52.

 

Make sure there is a dial tone before dialing. It

 

 

is normal if the telephone takes a second or two

 

 

before producing a dial tone. Wait an extra second

 

 

before dialing.

 

Check that all the telephones connected to the same

 

 

telephone line are hung up.

 

• Make sure to set the DIAL TYPE to the correct

 

 

setting (pulse dialing or tone dialing) for the service

 

 

in your area (see Feature summary on page 15).

 

If any of your other telephones are having the same

 

 

problem, the problem is in the wiring or local service.

 

 

Contact your telephone service provider (charges

 

 

may apply).

 

If you are using the speakerphone, eliminate any

 

 

background noise. Noise from a television, radio,

 

 

or other appliances might cause the telephone to

 

 

not dial out properly. If you cannot eliminate the

 

 

background noise, first try muting the telephone

 

 

before dialing, or dialing from another room in your

 

 

home with less background noise.

 

 

 

The telephone does

Make sure the ringer is on (see Ringer volume on

not ring when there

 

page 14).

is an incoming call.

Make sure the telephone line cord and power adapter

 

 

 

are plugged in properly (see Telephone installation

 

 

on page 7).

 

There might be too many extension telephones

 

 

on the telephone line to allow all of them to ring

 

 

simultaneously. Try unplugging one telephone at a

 

 

time until the telephones start ringing.

 

Test a working telephone at the same telephone

 

 

jack. If another telephone has the same problem,

 

 

the problem is in the telephone jack. Contact your

 

 

telephone service provider (charges may apply).

 

The telephone line cord might be malfunctioning. Try

 

 

installing a new telephone line cord.

 

 

 

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AT&T CL4939 user manual Troubleshooting