Of the worst attendant consoles to exist on this planet, the vintage Northern Telecom would win hands down.

Joe the UCX Guy had featured this console and used it during his days while he attended Purdue.

These switchboards or consoles were tied behind a central office switch such as DMS series or the carrier grade PBX – the SL100 (which I believe is different than the original SL1.)

In short, central office services are much less feature rich and thats why it has little functionality.

But why in the hell it’s so honking big is beyond me. It’s one of the many consoles of those days that required a 25 pair Amphenol cable to function.