I am looking for information for my recently acquired ASR33 that has an Anderson Jacobson modem (ADT-233) built into it. I have retrieved the documents for the base ASR33 from Bitsavers and University of Queensland, but it doesn't look like any of the manuals describe the modem. The modem is complete with the acoustical coupler. :-) The modem does have a Teletype sticker on it and describes it as a UCC-6. I need to know how to hook the ASR33 to my PDP-11 using a 20mA connection. I am looking for user guides, technical details and schematics. Thanks! --barrym