I will provide a link to the Binatone site where there is contact information. One problem with finding this manual is the enormous number of fake sites offering it. Heaven help you if you try to run that maze. You would have to be armored to the teeth to not get malware.
That said, here is the manual to a 2200 binatone. The site is good but they don't seem to have your model yet. There is a squeaky chance (a chance that barely slips through) that its manual may overlap with your requirements.
http://phone.manualsonline.com/manuals/mfg/binatone_electronics_intl_ltd/2200.html
Binatone Global
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