5
5
.
.
6
6
.
.
5
5
P
P
S
S
T
T
N
N
U
U
s
s
e
e
r
r
M
M
a
a
n
n
a
a
g
g
e
e
m
m
e
e
n
n
t
t
VOIP GATEWAY32 can restrict calls in PSTN-To-IP direction through PSTN User
Management, which can avoid illegal user calling from FXO port, or calling for free through
illegal means in IP network.
5
5
.
.
6
6
.
.
5
5
.
.
1
1
S
S
e
e
t
t
P
P
S
S
T
T
N
N
I
I
n
n
b
b
o
o
u
u
n
n
d
d
L
L
i
i
m
m
i
i
t
t
M
M
o
o
d
d
e
e
Fig 44
FXO Inbound Limit Mode Diagram
FXO Inbound Limit Mode includes:
No limit;
Limit, Keep Ringback;
Limit, Off-hook for 1 s, then on-hook;
Limit, Off-hook and Play IVR.
Choose one mode in pull-down menu of “FXO Inbound Limit Mode”, and choose “white list”
or “Black list” in the pull-down menu of “Choice White/Black List, then click “Submit”.
5
5
.
.
6
6
.
.
5
5
.
.
2
2
S
S
e
e
t
t
B
B
l
l
a
a
c
c
k
k
/
/
W
W
h
h
i
i
t
t
e
e
L
L
i
i
s
s
t
t
Fig 45
White List Diagram
If you choose “White list”, the page will display White List configure, and system will only
permit the calls from “White List”; if you choose “Black list” the page will display Black List
