Yealink SIP-T54S Administrator's Manual page 867

Parameters
Phone User Interface:
None
voice.tone.message
Description:
Customizes the tone when the IP phone receives a text message.
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. If
you want to disable this warning tone, set it to 0.
It is only applicable to CP920 IP phones.
Web User Interface:
Settings->Tones->Message
Phone User Interface:
None
voice.tone.autoanswer
Description:
Customizes the warning tone for auto answer.
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. If
you want to disable this warning tone, set it to 0.
Web User Interface:
Settings->Tones->Auto Answer
Phone User Interface:
None
To configure tones via web user interface:
Click on Settings->Tones.
1.
Select the desired value from the pull-down list of Select Country.
2.
Configuring Audio Features
Permitted Values
String
String
Default
Blank
Blank
841