Quick Start Guide

Debugging

2.3.1 VTO Calls VTH

Dial VTH room No. (such as 101) at VTO to call VTH. VTH pops up monitoring image and

operating icon, see Figure 2-18.

The following figure means that SD card has been inserted into VTH. If SD card is not inserted,

recording and snapshot icons are gray.

Call VTH from VTO

2.3.2 VTH Monitors VTO

VTH is able to monitor VTO, fence station or IPC. Take VTO for example.

Select Monitor > Door, see Figure 2-19. Select the VTO to enter monitoring image, see Figure

2-20.

The following figure means that SD card has been inserted into VTH. If SD card is not inserted,

recording and snapshot icons are gray.

2.3.3 Device Upgrade

Do not cut off power supply during device upgrade. Power supply can be cut off only after the

device has completed upgrade and has restarted.