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Chapter 10 Troubleshooting Your Phone
Tips for General Troubleshooting on Your Cisco IP Phone
10-2
Cisco IP Phone 7960G and 7940G User Guide
OL-4637-01
Table 10-1 Cisco IP Phone General Troubleshooting Tips
Symptom to check... Action to take...
Proper signaling/dial tone on the
phone
To check that signaling is working properly on your phone, press the
Speaker button to answer a call. If you hear a dial tone and you can
answer a call, signaling is working properly
Handset cradle clip gets stuck or
interferes with usage of the
phone
The phones are designed with a reversible handset cradle clip. This
clip is used with the plastic tab protruding out when the phone is in
a vertical (wall-mounted) position. The position of the tab can
interfere with the handset as it is placed in the cradle.
If the phone remains in the on-hook position, you might
experience continued ringing when you try to answer a call or
a lack of dial tone when you try to place a call. To resolve this
problem, you might need to reverse the clip.
If the handset cradle clip is in the wall-mounted position and
your phone is placed on a desktop, slide the clip upward to
remove it. Rotate the clip 180 degrees and slide it back in so that
the tab is hidden.
If the hook switch remains in the up position, tapping on the
phone should free the switch. You can also try pushing, and
suddenly releasing, the off-hook button after the handset has
been picked.
For additional information about adjusting the handset, see the
Adjusting the Handset Rest section on page 1-13.
Hook switch contact
performance is degraded and
causes intermittent operation
The hook switch contacts on the phone use a wiping action to
self-clean the contacts. If your phone is not used on a regular basis,
dust and other airborne contaminants might degrade the contact
performance and result in intermittent operation. If you have
periods of limited phone usage, you can clean the contacts by
quickly pressing and releasing the hook switch a dozen times.
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