Telephone Management and Troubleshooting
Problem/Symptom | Suggested Solution (continued) |
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Audio quality is poor, specifically, you hear an echo while using a handset, static, sudden silences (gaps in speech), clipped or garbled speech, etc.
No dial tone
A feature does not work as indicated in this guide (for example, the Redial button does not operate as described)
Various potential network problems might be causing the problem.
Access the Network Audio Quality screen (described in Viewing the Network Audio Quality in Chapter 6: 4620/4620SW/4621SW IP Telephone Options) to provide your System Administrator with specific information related to this problem.
Contact your LAN Administrator with as complete a description of the problem as possible.
Check that both the handset and line cords into the phone are securely connected. Note that there might be a slight operational delay if you unplug and reconnect the phone.
Reset or power cycle the phone with your System Administrator’s assistance. (See the section titled Resetting and Power Cycling the IP Telephone for details.)
Contact your System Administrator if these steps do not produce the desired result.
Verify the procedure and retry. For certain features, you must lift the handset first or place the phone
Contact your System Administrator if this action does not produce the desired result. Your telephone system might have been specially programmed for certain features applicable only to your installation.
All other IP Phone problems | Contact your System Administrator. |
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84 4620/4620SW/4621SW IP Telephone Release 2.2 User Guide