Yealink SIP-T48G Administrator's Manual page 305

Great Britain
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Greece
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Hungary
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Lithuania
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India
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Italy
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Japan
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Mexico
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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
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United States
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Chile
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Czech ETSI
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Configured tones can be heard on IP phones for the following conditions.
Condition
Dial
Ring Back
Busy
Congestion
Call Waiting
Dial Recall
Info
Stutter
Message
Auto Answer
Description
When in the pre-dialing interface
Ring-back tone
When the callee is busy
When the network is congested
Call waiting tone
When receiving a call back
When receiving a special message
When receiving a voice mail
When receiving a text message
When automatically answering a call
Configuring Advanced Features
291