Table of Contents
Foreword.............................................................................................................................................................. I
Important Safeguard and Warnings................................................................................................................ III
1 Product Overview............................................................................................................................................ 1
1.1 Front Panel.................................................................................................................................................................................... 1
1.1.1 VTH2421F Series............................................................................................................................................................. 1
1.1.2 VTH2621G/VTH2622G Series..................................................................................................................................... 2
1.1.3 VTH5221D Series............................................................................................................................................................ 3
1.1.4 VTH5241D Series............................................................................................................................................................ 4
1.1.5 VTH5421E Series............................................................................................................................................................. 5
1.1.6 VTH5421H/VTH5422H Series..................................................................................................................................... 6
1.1.7 VTH5441G Series............................................................................................................................................................ 7
1.1.8 VTH8621K/VTH8622K/VTH8641K/VTH8642K Series..........................................................................................8
1.2 Rear Panel......................................................................................................................................................................................8
1.2.1 VTH2421F Series............................................................................................................................................................. 9
1.2.2 VTH2621G Series..........................................................................................................................................................10
1.2.3 VTH2622G Series..........................................................................................................................................................11
1.2.4 VTH5221D Series..........................................................................................................................................................12
1.2.5 VTH5241D Series..........................................................................................................................................................13
1.2.6 VTH5421E Series...........................................................................................................................................................14
1.2.7 VTH5421H/VTH5422H Series...................................................................................................................................15
1.2.8 VTH5441G Series..........................................................................................................................................................17
1.2.9 VTH8621K/VTH8622K Series....................................................................................................................................18
1.2.10 VTH8641K/VTH8642K Series................................................................................................................................. 19
1.3 Alarm Port................................................................................................................................................................................... 20
1.4 Function.......................................................................................................................................................................................20
2 VTH Initialization........................................................................................................................................... 22
3 VTH Screen Operation...................................................................................................................................28
3.1 Home Screen..............................................................................................................................................................................28
3.2 Editing Home Screen.............................................................................................................................................................. 29
3.3 Call................................................................................................................................................................................................. 31
3.3.1 Call Log............................................................................................................................................................................31
3.3.2 Contacts.......................................................................................................................................................................... 31
3.3.3 Calling User....................................................................................................................................................................33
3.3.4 Call from User................................................................................................................................................................35
3.3.5 Call from VTO................................................................................................................................................................ 36
3.3.6 Calling DMSS................................................................................................................................................................. 38
IV
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