Polycom VVX 1500 D ユーザーズマニュアル

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Troubleshooting the Polycom VVX 
1500 D Phone

This chapter contains general troubleshooting information to help you solve 

any problems you might encounter when you use the Polycom VVX 1500 D 

phone in an H.323 environment. The phone can provide feedback in the form 

of on-screen error messages, status indicators, and log files for troubleshooting 

issues. 
For detailed information on error messages, log files, testing the phone 

hardware and phone issues—along with likely causes and corrective actions— 

refer to the “Troubleshooting” chapter of the latest SIP Administrator’s Guide.
This chapter presents phone issues, likely causes, and corrective actions for the 

Polycom VVX 1500 D phone in an H.323 environment. Issues are grouped as 

follows:

• Calling

• Polycom VVX 1500 D Display

Review the latest Release Notes for the SIP application for known problems and 

possible workarounds.

The line icon shows an 
unregistered line icon.

The phone line is unregistered.

Verify that the appropriate configuration 
parameters are set correctly. Verify that 
the call server is functioning correctly.

The Polycom VVX 1500 D 
selects a lower-quality codec 
(H.261) when the called endpoint 
also supports H.264 .

The Polycom VVX 1500 D 
selects which audio/video codecs 
to transmit based on the far-end 
endpoint’s order of codecs in 
their supported list.

Verify that the appropriate configuration 
parameters are set correctly. Check the 
value of 
voIpProt.SDP.answer.useLocalPrefer

ences

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