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Confirm the following configurations before call; press the call key of camera module to call
master VTH, and call other extension VTHs simultaneously.
Ensure to cancel the selection of “Call VTS or Not”, as shown in Figure 6-5.
Confirm whether call key is bound with master VTH, as shown in Figure 6-6. Please refer
to “7.7.2 Facade Layout” for details.
Figure 6-6
Make a group call from button module
Ensure that button module has been connected and added to façade layout. Otherwise, this
call doesn’t exist.
Before calling, confirm whether call key is bound with master VTH, as shown in Figure 6-7.
Press the call key on button module, to call the master VTH, and call other extension VTHs
simultaneously. Please refer to “7.7.2 Facade Layout” for details.
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