Grandstream Networks GSC3570 User Manual page 21

This new feature is designed and implemented based on feedback from customers. It can help to increase safety but keep
convenience, used in public scene like School/Campus, Dorm/Hallway, Hospital, Library, Gym, Theater, Club, etc.
Basically, in open/public space where there is a GSC3510 Audio Intercom or IP phone (or GDS3705), User (e.g.: student)
pressing emergency button or make a call to GSC3570 (e.g.: security guard).
If the same location has installed an IP camera or a door system, once the call is established and in session, the GSC3570 will
display RTSP icon on the right side of touch screen UI, pressing RTSP icon and selecting the related IP Camera as shown in
below screenshot, then the call will automatically be put ON HOLD, the person at GSC3570 side can see the RTSP live stream,
he can either continue monitoring the RTSP stream or switch back to continue talking to the caller.
Considering the following scenario as an example :
Bob Calls Carl on the GSC3570.
While Bob and Carl are on Call, Carl can press the RTSP icon shown on the below screenshot to monitor the video camera.
Once Carl starts the monitoring, the call is automatically put on hold with Bob until Carl decides to return to the call by
clicking the Back button.
Note
The call can only be hung up from the other party (Caller party) and not from the GSC3570 side when the call is hung up from
the other party, the RTSP stream is resumed on the GSC3570.
The user can also open the door if connected to an access control device without a built-in camera (e.g.: GDS3705).
Figure 38: Video Monitor Switching During an Active SIP Call
Figure 39: GSC3570 Switching to RTSP stream during an active SIP call