ZyXEL Communications P-2612HNU-Fx Support Notes page 15

Having configured the two WAN interfaces, the next step is to set up the WAN
internet Connection for the required services.
Please note that the device has automatically assigned Layer2 interfaces for the 2
PVCs just created. They are nas1, and nas2 by order of creation.
9. Go to Network > WAN > Internet Connection and select "Add". Choose nas1
for Data/IPTV WAN internet connection.
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P2612HNU Fx Support Notes
15