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Parameter Description
VTO No.
Set a number.

It should be four digits. The first two should be 80 and the
last two starts with 01, such as 8001.

If there are multiple VTOs, their VTO numbers cannot be the
same.
Transmission Mode
Mode1 : Real-time call but the video and sound may lag with
poor network.
Mode2 : Not real-time call but ensures smooth video and
sound.
3.6.3 VTO Number Management
When the access controller works as the SIP server, add other VTOs to call them.
Log in to the web interface.
Select Talkback Setting > VTO No. Management .
Click Add .
VTO No. management
Configure the parameters.