Customizes the ring-back tone for
the system.
tone = element1[,element2]
[,element3]…[,element8]
Where
element =
[!]Freq1[+Freq2][+Freq3][+Freq4]
/Duration
Freq: the frequency of the tone
(ranges from 200Hz to 7000 Hz). If it
is set to 0Hz, it means the tone is not
played. A tone consists of at most
four different frequencies.
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 system to play tones
once, add an exclamation mark “!”