Yealink SIP-T2xP Auto Provisioning Manual page 118

Yealink IP Phones Auto provisioning Guide
Parameter
voice.tone.dial =
108
Permitted Values
It customizes the dial tone when the
parameter "voice.tone.country" is set to
Custom.
tonelist = element[,element] [,element]...
Where
element =
[!]Freq1[+Freq2][+Freq3][+Freq4] /Duration
Freq: the frequency of the tone (ranges from
200 to 7000 Hz). If it is set to 0Hz, it means
silence. A tone is comprised of at most four
different frequencies.
String
Duration: the duration (in milliseconds) of
the dial tone, ranges from 0 to 30000ms.
You can configure at most eight different
tones for one condition, and separate them
by commas. (e.g., 250/200, 0/1000,
200+300/500, 600+700+800+1000/2000).
If you want the phone to play tones once,
add an exclamation mark "!" before tones
(e.g., !250/200, 0/1000, 200+300/500,
600+700+800+1000/2000).
The default value is blank.
Descriptions
Settings->Tones-> Dial
Web Setting Path