Possible cause and solutions
- Your phone may be on Mute. Press the [ MUTE ] button during a call. To return to the call, press the [ MUTE ] button
again.
Note: [ MUTE ] is a soft key visible on the display during a call.

- Problem with the callers mic. Call another person, if they can hear you the problem is not with your telephone.
- Problem with telephone jack, test by plugging your telephone into a different telephone jack.
If the person you are speaking to still can not hear you, you telephone may require service.
For information on service select "Support Links" then "Service locator".