Once it's for wire technically six I guess I'm not really versed in these old phone cords but when I can read it would accept an r2 or 12 as far as the housing but I'm not 100% sure between the two just based on what little I can find out there looks like it would be an r12 but I'm willing to try anything I just can't blow a lot of money on a lot of dead end keyboards. Trying to get it up and running before Christmas for my dad