IPPS Intercom System
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Chapter VI Extension Connection Diagram
1. Centralized Power Supply: input of DC12V. When the device needs to
adopt the centralized power supply, this connector can be used as power
inut of the device. In this case, DC power socket is not used.
2. External Mic: external microphone can be used as talkback microphone.
After connecting with this microphone, the internal microphone is turned
off.
3. Active Loudspeaker: with external active loudspeaker, the system sound
and talking sound can be played.
4. External Speaker: The function is be consistent with the one of internal
speaker. Two speakers can be used at the same time.
5. Record Output: it can be connected with recording device to record the
call content between the host and extension.
6. Door Magnet 1: Connect with the door magment and indicate switch
status of door lock 1 through the host. When door lock 1 opens, the grid of
