When I went to college I operated the college telephone cordboard for extra money.  All manual, even party lines with special rings like two short and one long.  I enjoyed every minute of it!  So much so I spent 20+ years in the telephone industry.

Since there is so much interest in the old analog electro-mechanical phone network, check out this Youtube site by Evan Doorbell who made thousands of hours of recordings of the network when he was in high school.

https://www.youtube.com/@evandoorbell4278/featured

 And finally for a bit of nostalgia this link will take you to a stereo recording of the sounds of a step CO.  Here is the text that accompanied the file.

Inside a Bell 355A step CDO in Brunswick, Md (March, 1984)
Phone tripper Trace McCall sent us a recording he made inside a step by step central office, and he promised to send us more.  The pulse repeating followed by the loud chattering was a CAMA trunk MF sending to the Frederick Tandem office.  At the beginning of the segment, in the background you can make out a "snoring" sound. That's a linefinder group running a switchman-started test. 

This is the link ==> https://1drv.ms/f/c/1f49f868da1c1566/ErroV6tR7aJIpaPd26gaqQoBf6eS19YmVU7Zupsshmv63Q?e=b9gv8e

Jim - KD9DO

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