MicroNet Technology SP5001/S - Manual (Page 58)

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Fixed IP Address:
usr/config$ ifaddr – ipsharing 1 210.11.22.33
Note: With Dynamic WAN IP Address, when the WAN IP is changed, we need
to change the external IP of SP5001/S using above command.
5. IP Sharing device must have a function to do IP/Port mapping. Some is
named as DMZ; some is named as virtual server. The VoIP messages
from WAN have to completely pass forward to the LAN. It is said if
SP5001/S is assigned a virtual fixed IP Address such as 192.168.1.5, IP
Sharing device must forward the VoIP messages to 192.168.1.5.
Please see the following for example:
>Advanced setting > NAT setting > DMZ Host setting
DMZ Host setting
Activa te
DMZ
DMZ Host IP :
. . .