Polycom IP 330 ユーザーズマニュアル

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 Troubleshooting Your SoundPoint IP 330/320 Phone
5 - 5
Calling
Symptom
Problem
Corrective Action
There is no dial tone.
Power is not correctly applied to 
the SoundPoint IP 330/320 
phone.
Do one of the following steps:
Check that the display is illuminated.
Make sure the LAN cable is inserted 
properly at the rear of the phone (try 
unplugging and re-inserting the 
cable).
If using in-line powering, have your 
system administrator check that the 
switch is supplying power to the 
phone.
Dial tone is not present on one of 
audio paths.
Do one of the following steps:
Switch between Handset, Headset (if 
present) or Hands-Free 
Speakerphone to see if dial tone is 
present on other paths.
If dial tone exists on another path, 
connect a different handset or 
headset to isolate the problem.