Yealink VC400 Administrator's Manual page 221

Austria

Brazil

Belgium
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China

Chile

Czech
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Czech ETSI
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Denmark

Finland

France

Germany

Great Britain
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Greece
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Hungary
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Lithuania

India
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Italy

Japan

Mexico

New Zealand
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Netherlands
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Norway
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Portugal
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Spain
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Switzerland
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Sweden
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Russia

United States
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Configured tones can be heard on the system for the following conditions:
Condition
Ring Back
Busy
Call Waiting
Description
Ring-back tone
When the callee is busy
Call waiting tone
Configuring System Settings
205