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Names (Central exchange unit)
[1] POWER switch
[2] Door station port
[3] Master station port
[4] Add-on exchange unit port
[5] CO line port
[6] Setting/log port
[7] Video output port
[8] Video output trigger port
[9] Door release relay port (L1 corresponds to door station D1,
L2 to door station D2, etc.)
[10] Power supply port
[11] Add-on unit ID setting switch
1st unit: 2
2nd unit: 3
3rd unit: 4
[12] Power/Communications error display LED
6-3
Power/Communications error display LED
Status
Power OFF
Power ON
Error in device or wiring
Contact the system manager.
Off
Lit
Flashing