Let me answer my own question.
After many test,
it finally work!Since 322L does not recognize other brands camera, I did below setting.
-->setup--camera setup--> key in camera name: (anything) --> address (ip camera's ip address)
--> Port 80 --> Administrator Name (of the ip camera) --> Password (of the ip camera)
--> Vendor (select
Dlink) --> Model (select
DCS-7010L or DCS-5030L) --> Save Settings
The trick is I treat the Trendnet IP673WI as Dlink DCS-7010L camera, and the 322L accepted it.
Pan/tilt, recording are functioning.

I then connected another Trendnet IP673WI camera, both ip cameras are working just fine.

Need to further test to see if there is any unexpected issue.

BTW, take note that DCS-7010L's spec are quite close to Trendnet IP673WI, so if you are using other brands and model's camera, just play with different Dlink's camera model. I believe the identical spec should work back by back.