PSA PANQ916K, Q916K/SP - Manual (Page 8)

8
Operating Instructions
Operating the Door Station.
Press the CALL button on the door station will ring a chime to all room
stations.
The door station can be answered by pressing and holding the
TALK
button on any room station to talk and releasing the talk button to listen.
Pressing the CANCEL button will end conversation. If cancel is not
pressed, the system will auto-cancel after 30 seconds.
If a door latch is installed, pressing the unlock DOOR button
momentarily will open or unlock the door.
The volume control is located behind the metal cover just above the cancel
button. Adjusting the volume will alter both intercom and door chime
volume for that door station only.