MOCET IG7200 - Manual (Page 24)

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„ Operation & Condition
1. When user enable or disable uPNP function, IG7200 will send PMP
configuration Request to uPNP Server and get response. IG7200 will
show configuration result (Success or Fail) and external router IP if uPNP
request succeed on web page.
2. IG7200 uPNP operation relies on NAT router uPNP-PMP performance
and user network environment greatly. Because of uPNP-PMP protocol
design, IG7200 can only issue one request for one port at one time. It
means one port mapping rule on NAT router is used for one port, not a
range of ports. In general, there is the limitation of 20 or 30 rues for PMP
table on NAT routes. IG7200 minimums port requirement is 18, so It
results in uPNP operation fail when router’s PMP table is not enough
which is maybe used by other devices.
3. In order to reduce port occupation on NAT router, IP-Cam port (5678 ~
5685) will be requested to be set dynamically by IG7200. If no IP-Cam is
connected to system, no IP-Cam port will be applied to NAT router.
4. It will take a period of time about 10-20 seconds to refresh uPNP web
page for uPNP request sending and receiving when user enable/disable
uPNP service.
5. Remote Web access is disabled in default setting. In order to reduce port
occupation, web port is removed from uPNP-PMP request. And it needs
user manually Config port mapping on NAT router when user enabled
remote web access function.
Notes: Later version will resolve this issue and system will automatically
send uPNP request for web port setting when user enabled Remote Web
function.