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

One or more of these factors may apply:

 

tone or complete a call

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

Your system administrator may have disabled

on your phone.

unresponsive

 

 

 

 

 

The softkey that you

One or more of these factors may apply:

 

want to use does not

You must press more to reveal additional softkeys.

appear

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

You cannot barge an encrypted call if the phone you are using is not

in a fast busy tone

configured for encryption. When your barge attempt fails for this reason,

 

your phone plays a fast busy tone.

 

 

 

You are disconnected

You will be disconnected from a call that you have joined using Barge if the

from a call that you

call is put on hold, transferred, or turned into a conference call.

joined using Barge

 

 

 

 

 

CallBack fails

The other party may have call forwarding enabled.

 

 

 

 

Cisco Unified IP Phone User Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)

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Cisco Systems 7975G, 7970G manual Troubleshooting Your Phone, General Troubleshooting, Symptom Explanation, CallBack fails