I was curious to know if anyone has customized their key system to make it unique. Or easier to diagnose.
I started with my ITT 501, using parts from a 601 that had the stand offs with three amp connectors.
I made the 501 "modular" by wiring a female in the first selection for a cord to go to my block field, second was a male for the RT (rotary/tone)intercom, and the third was another female turned to allow for a key set to be plugged into the system direct. There was a bracket that locked the first two in place that had to be removed for a desk key set to plug in. The key set was used to troubleshoot problems in the system.
I have done that also with my WE 551C ksu.
I put the female between the block and line cards slot at the bottom just above the bracket for the 118A freq gen.
Running a single cable out the bottom to a block field using a mating connector on the first "M" block.
Later I found a bridging connector with 6 connectors that I re configured to mate with a modular key system and the last position left for intercom connection.
By doing this, I made it easy to find a problem faster and easier than punching all wires on a block with bridge clips.
And now for me it's easy to plug in what I want where I want it.
I know that there are those who will only do theirs the "book"way, and that's fine. But for me the modular system I made works great for me. Even the Co lines are modular, and just plug in to a regular rj Jack.
What are your thoughts on what I did. Or what have you done with your set up?.... Ken
I remember lifting one end of the holding resistor on the 1A2 line cards and inserting one side of a small audio transformer to provide M.O.H. from a radio.
Also there was a privacy module, wired in series with the Telephone line that excluded anyone from listening to a conversation if they were not the first to first pick up the line.
It could placed be on each set, or a group of sets. I think Proctor sold these years ago. Reverse engineered, it turned out to be a simple 2 wire diac / scr switch module.
Then there's story about the local telco not being able to get their of dial access paging system gear to work after we installed a new speaker system.
In frustration the owner asked me to do what I could and, and I cobbled a fix overnight with a hand full of parts from Radio Shack. The Telco was not happy with me, or them, when they locked the equipment room on them.....!
Len
OK, who locked who out of the equipment room?
I like your story, but it's a bit confusing, as to whom is who.
But sounds like you know your stuff.
Can you elaborate more on this story?
Ken