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https://bravikov.wordpress.com/2017/11/03/%d0%bf%d0%b5%d1%80%d0%b5%d1%85%d0%be%d0%b4%d0%bd%d0%b8%d0%ba-mj10-22-cs25/
Переходник MJ10-22-CS25 (RJ11 — DB9)