Lanier/Toshiba KSU 6 Electronic Key Telephone System
This brings back memories from about 1984. These systems were the first kind I ever installed. They had gold finger boards but like most systems from that time they had some large bulky components. The transformers will be removed for better pricing.
I thought the power supply below would have a power board inside but it didn't. There was just 1 transformer and three caps inside.
Central processing unit
2 digital station cards
2 analog trunk cards
This card controlled external paging, background music and music on hold. I believe it also provided power to the other boards.
Backplane
Components from the power supply
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