Vivotek IP8166 User Manual page 302

VIVOTEK
8.21 RemoteFocus
(capability_image_c<0~(n-1)>_remotefocus=1)
Note: This request requires Administrator privileges.
Method: GET/POST
Syntax:
http://<servername>/cgi-bin/admin/remotefocus.cgi?function=<value>[&direction=<value>]
[&position=<value>][&steps=<value>][&iris]
PARAMETER VALUE DESCRIPTION
302 - User's Manual