User Manual
Manuals
Brands
Grandstream Manuals
Office Electronics
Grandstream UCM6204 Innovative IP PBX with 4 FXO and 2 FXS Ports
201
202
203
204
205
206
207
208
209
210
P
a
g
e
|
209
UCM6200 Series Us
er Manual
V
ersion 1.0.15.1
6
•
If the
user selects “Whitelist Enable
”
and adds
extension in the list,
only the extensions in
the list can
be
allowed to be reached v
ia IVR.
Figure
130
: Black/Wh
ite List
1
...
...
208
209
210
211
212
...
...
364