The off on dial tone
is the special dial tone of some countries. Generally
the dial tone
will
be permanent (-1) while off on dial tone will be in
the format of "on-off-on-off..." The cadence
will be like this:
|
freq1 |
amp1 |
freq2 |
amp2 |
freq3 |
amp3 |
freq4 |
amp4 |
t(ms) |
1 |
350 |
-130 |
440 |
-130 |
0 |
0 |
0 |
0 |
100 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
100 |
The
first row is "on" cadence
and the second row is "off" cadence.
There is no frequency but the duration time present.
(2004/09/30)
|
