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Appendix II
Troubleshooting
Troubleshooting
The following table represents the more common problems found with a phone, and
provides possible causes.
Problem
No display
No dial tone
No sound in the
handset
Cannot dial out of the
system
(External Calls)
No voice messages
received
The phone is not
ringing
Aastra - 2568-004
Possible Cause
•
Check for dial tone
•
Check the connection to the phone jack
•
Check that the other phones in the system are operating
•
Check the setting of display contrast
•
Check the connection to the phone jack
•
Check the connection of the handset and/or the headset
•
Check that other phones in the system are operating
•
Check volume setting of handset, speaker, or headset
•
Check the volume setting of the handset, speaker, or
headset
•
Check that you have the rights to make external calls
•
Check your connection to the voice mail system
•
Check your welcome message or voice signature record on
the voice mail system
•
Check activation of call forwarding to your voice mailbox
•
Check the volume of the ring melody
•
Check Call Forward settings
ITE-760 User Guide
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