This is the front of the ASR 33 Teletype call control unit. It is the power supply for the teletype. It is called a call control unit because the phone equipment needed to operate a teletype with a phone line is installed as part of this unit if that option is ordered. This teletype was intended for operation with a computer so does not have any of the phone equipment installed.
Feel free to contact me, David Gesswein firstname.lastname@example.org
with any questions, comments on the web site, or if you have related equipment,
documentation, software etc. you are willing to part with. I am
interested in anything PDP-8
related, computers, peripherals used with them, DEC or third party, or