I inherited a BMW CPT 8000 phone in my 540i, and of course the dealer or previous owner had disposed of the manual. Local dealership was no help, nor Motorola USA. E-bay vendors offered same for a price. Went on Motorola site, and decided to find an english-speaking country which might have it still. Canada had it available as a pdf, and I copied it. I do not know if it will be the same as the BMW CPT 8000 series manual, but at least it's a start.