Yealink SIP-T48G Administrator's Manual page 200

Microsoft Lync Edition Administrator's Guide for SIP-T2_Series and T4_Series IP Phones
Parameters
Note: It works only if the value of the parameter "voice.tone.country" is set to
Custom.
Web User Interface:
Settings->Tones->Call Waiting
Phone User Interface:
None
voice.tone.dialrecall
Description:
Customizes the call back tone.
The value format is Freq/Duration. For more information on the value format, refer to
the parameter "voice.tone.dial".
Note: It works only if the value of the parameter "voice.tone.country" is set to
Custom.
Web User Interface:
Settings->Tones->Dial Recall
Phone User Interface:
None
voice.tone.info
Description:
Customizes the info tone. The phone will play the info tone with the special
information, for example, the number you are calling is not in service.
The value format is Freq/Duration. For more information on the value format, refer to
the parameter "voice.tone.dial".
Note: It works only if the value of the parameter "voice.tone.country" is set to
Custom.
Web User Interface:
Settings->Tones->Info
Phone User Interface:
None
voice.tone.stutter
Description:
Customizes the tone when the IP phone receives a voice mail.
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Permitted Values
String
String
String
Default
Blank
Blank
Blank