Parameters of Detect Type include:
0
：
One-tone detecting use lower FFT
1
：
One or two tone detecting use higher FFT
2
：
Two-tone detecting use lower FFT
3
：
detect on band endge
Parameters of Noise Control include:
0
：
Noise-estimate after removing one tone
1
：
Noise-estimate after removing two tone
2
：
Noise-estimate after removing three tone
Parameters of Cadence Cycles:
0
：
on time (Verify one on time only): default
1
：
verify one on-off time (Verify one on-off time cadence)
2
：
verify tow on-off time
（
Verify two on-off time cadence
）
3
：
verify three on-off time
（
Verify three on-off time cadence
）
The range of “Detect Delay Time” is 10~500ms, and the default is 300ms
；
The range of Drop Delay Time is 10~80ms, and the default is 40ms.
In normal situation, when detecting the tones, for these 5 control parameters, use the
default value is enough, but sometimes, they also need adjustment. For example, for the
busy tone of Brazil (425Hz
，
0.25s on/0.25s off ), the on-off time is relative short, so “Detect
Delay Time” (200ms) or “Drop Delay Time” need be shortened properly.
6
6
.
.
4
4
.
.
3
3
.
.
2
2
C
C
u
u
s
s
t
t
o
o
m
m
i
i
z
z
e
e
d
d
T
T
o
o
n
n
e
e
s
s
D
D
e
e
t
t
e
e
c
c
t
t
i
i
o
o
n
n
If the line busy tone is not the same with that of designated country or district, and user
can get the specific parameters of the line busy tone, user can customize the tone format.
The following parameters need be configured:
In “Call Progress Tone Sending Configuration”, the “Country or District” need be set to
“other”; and in the page, dial tone, ring back tone, busy tone, unobtainable tone shows. Input
the parameters of busy tone according to section 6.4.2.
Also, the control parameters of Call Progress Detecting need be set. (Refer to section
6.4.3.1)
6
6
.
.
4
4
.
.
3
3
.
.
3
3
B
B
u
u
s
s
y
y
T
T
o
o
n
n
e
e
A
A
u
u
t
t
o
o
L
L
e
e
a
a
r
r
n
n
i
i
n
n
g
g
If line signal is different from the busy tone of the country or district, and user can not get
the specific parameters of the line busy tone, user can get the line busy tone parameters
