ATEIS IDA8 - Manual (Page 153)

Product Features 153
© 2012 ATEÏS
There are three types of redundancy unit:
RU-MAIN.: Switch digital audio and processing matrix like IDA8C, paging consoles and interfaces.
RU -CTL: Switch security and normal contacts IN and OUT.
RU -PDC: Switch auxiliary audio IN and OUT , two additional paging consoles and telephone line.
4.2.1.2 Hardware Wiring
Active Control
IDA8RU-Main/PDC/CTL determine active system will be primary or secondary IDA8 network by