Polycom VVX 1500 D User Manual download pdf (Page 29)

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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.

Calling

Symptom Problem Corrective Action

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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Polycom VVX 1500 D User Manual Page 29