KT&C KVR-0412H - Manual (Page 182)

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 Users can select the display mode from 1, 4, 9 and 16 multi view.
 16 channel multi view is available for CIF resolution.
 4 channel multi view is available for H.D1 and D1 resolution.
 Only 1 channel view(full screen) is available for 720p and 1080p.
 The message as below pops up when users try to see the multi view which exceeds its resolution.
10.5.5 PTZ Control
 Users are able to control PTZ by blackberry phone.
 Press volume up button on the right side of the phone to zoom in.
 Press volume down button on the right side of the phone to zoom out.
 Press 1~9 number buttons to change directions as user want.
 For example, click no. 4 to move left and no.6 to move right.
 In the same way, click no.2 to move upside and no.8 to move downside.