Grandstream Networks GSC3570 User Manual page 17

During active calls, big icons can now be displayed on the call screen with the firmware update to version 1.0.5.21
GSC3570 Open Door NO SIP Call:
This is new feature. At the GSC3570 idle screen, press "Monitor →Door system", the related GDS37XX will be displayed. In the
blue bar, left is a "Phone"icon and right is the "Open door"icon. The"Phone"icon will establish SIP call as previous firmware
behaved.
Press "Open door" icon, the GSC3570 will open door directly and NO SIP CALL will be established. Depending on how many
doors controlled, if one door configured, the door will open directly; if two doors configured, another screen will pop up to
allow user to choose which door to open, as shown below:
When the door is successfully opened the following message will appear:
RTSP Audio Volume Control
The touch LCD screen is improved by adding "Speaker" icon when RTSP stream is displayed. This feature allows the user to
adjust the volume of speaker to increase or decrease the audio of the RTSP media stream.
Touch the white "Speaker" icon will make it becoming blue, and a vertical bar will appear at the right side of the blue speaker
icon. Touch any part of the screen will exit the operation.
Figure 27: Open Door without SIP Call
Figure 28: Open Door without SIP Call