I too have the same issues as user 'IMPORT' I have the Smartindustry branded DOZ27W bought from Ebay.
I have the paid version of the IP Cam lite software and the video works fine using the DOZ27 camera in the menu, but resets the camera when using any PTZ or Focus controls.
Software Ver. 184.108.40.206
Release Date 2011-09-29 14:36:18
Hardware Ver. Hi3512
Video channel 1
PTZ Address 1
Data Bits 8
Stop Bits 1
Parity 0 - None
All functions work on the camera and can be controlled with Internet explorer or DVS client software, surely there can't be too much diference between DOZ27 and DOZ27W that the PTZ functions can't be fixed?
Any update greatly appreciated, hope the info I provided helps!