You can use other wireless routers that are supported by unifi ( http://klseet.com/index.php?option=com_con...id=42&Itemid=39 ) without configuring alcatel OTU.

The reason we want to configure the OTU is because we wanna to fully utilize the OTU, since there are few available ports in OTU, it can do VLAN untagging job.

I wanted to configure internet VLAN and IPTV VLAN to map to LAN port 2 and LAN port 3, then I can make D-Link 615 as my second AP to serve first floor, but there is no manual for this OTU, kinda difficult to hack it without any documentation.