Yealink SIP-T23, Руководство по комплектации

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Yealink IP Phones Auto Provisioning Guide
60
Why doesn’t the IP phone download the ring tone?
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Ensure that the file format of the ring tone is *.wav.
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Ensure that the size of the ring tone file is no larger than that the IP phone supports.
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Ensure that the properties of the ring tone for the IP phone are correct.
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Ensure that the network is available and the root directory is right for downloading.
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Ensure that the ring tone file exists on the provisioning server.
Why doesn’t the IP phone update configurations?
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Ensure that the configuration files are different from the last ones.
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Ensure that the IP phone has downloaded the configuration files.
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Ensure that the parameters are correctly set in the configuration files.