In addition to that we had the orderwires connecting our facility to the next one down the line. In Sacramento we connected to Andrews AFB, Clark AFB, Hickam AFB, Stockton BFC, White Alice, I think I am missing some. We only used the orderwires to instant message our counterparts for data and voice line troubleshooting and restoral. If we got bored on a midnight shift we could dial up the frequency for the continuous Indian government propaganda teletype signal. It was always good for a laugh.
At Christmas time we always put up a teletype connection around the world to wish each other Merry Christmas for those of us working twelve hour shifts through it. We got banners from every location and sometimes an Ascii art playmate and the like.
Here is Cynthia Myers, "Holy Toledo!":
Didn't really do her justice.