pdf 502-580-431 i2 Mar71 - WE 543B and 543DBC Sets - Service Popular
By Paul F 215 downloads
502-580-431_i2_Mar71_543B_and_543DBC_Sets_Service_tci_ocr.pdf
See "Phone Service for Small Motels - The 761A PBX Switch and 543D Desk Set" in Singing Wires, September 2016. Contributed by Paul Wills. Processed by Paul Fassbender.
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