https://www.telephoneparts.com/index.cgi?product=Telecom/Modular+Line+Cords/pcode/101-60-542R
MOD CABLE 6P6C 7' REVERSE - PART# 101-60-542R
6 conductor, 7 foot silver satin flat wire, RJ11/14/25, 6P6C, , reverse wiring
modcablereversepart
https://www.asialink-tech.com/en/2-1367-159162/product/UK-RJ-plug-6P6C-latch-connector-id584030.html
UK RJ plug 6P6C latch connector - Asialink International Technology Corp.
Detailed information of UK RJ plug 6P6C latch connector offered by Asialink International Technology Corp..
ukrjpluglatchconnector
https://tienda.ray-ie.com/cables/290-cable-usb-a-b-1m.html
Cable RJ12 6P6C - Ray Online
cablerayonline
https://shop.technofix.uk/straight-6p6c-modular-rj11-cable-for-kenwood-mc-60-etc-desk-microphones-and-yaesu-transceivers?manufacturer_id=11
Straight 6p6c modular RJ11 cable for Kenwood MC-60 etc. desk microphones and Yaesu transceivers -...
https://www.offgridoptions.com/APRS6595/
RJ-25 (6P6C) breakout board to screw terminals, with DIN rail clips - Off Grid Options