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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 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.
You are disconnected
from a call that you
joined using Barge
You will be disconnected from a call that you have joined using Barge if
the call is put on hold, transferred, or turned into a conference call.
CallBack fails The other party might have call forwarding enabled.
The phone shows an
error message when
you attempt to set up
Call Forward All
Your phone may reject your attempt to set up Call Forward All directly on
the phone if the target number that you enter would create a Call Forward
All loop or would exceed the maximum number of links permitted in a Call
Forward All chain (also known as maximum hop count). Ask your system
administrator for details.