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76 OL-14622-01
Troubleshooting Your Phone
This section provides troubleshooting information for your Cisco Unified IP Phone.
General Troubleshooting
This section provides information to help you troubleshoot general problems with your phone. For
more information, see your system administrator.
Symptom Explanation
You cannot hear a dial
tone or complete a call
One or more of the following factors might apply:
You must log into the Extension Mobility service.
You must enter a client matter code (CMC) or forced authorization
code (FAC) after dialing a number. (SCCP phones only)
Your phone has time-of-day restrictions that prevent you from using
some features during certain hours of the day.
The Settings button is
unresponsive
Your system administrator might have disabled on your phone.
The phone screen
appears blank
The phone screen has gone into sleep mode to save power after a period of
inactivity. Wake the phone screen by lifting the handset, or by pressing any
button, such as
. See Cleaning and Maintaining the Phone
Screen, page 15.
The phone screen does
not illuminate under
any circumstances
You might have disabled phone screen illumination on your phone. Contact
your system administrator to determine if this feature is available to you.
The softkey that you
want to use does not
appear
One or more of the following factors might apply:
You must press more to reveal additional softkeys.
You must change the line state (for example, go off-hook or have a
connected call).
Your phone is not configured to support the feature associated with
that softkey.
Barge fails and results
in a fast busy tone
You cannot barge an encrypted call if the phone you are using is not
configured for encryption. When your barge attempt fails for this reason,
your phone plays a fast busy tone.
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