Little_Monkey_Mojo t1_j1kle8x wrote on December 25, 2022 at 3:04 AM

The rotary and the touch tone were both supplied power through the telephone line. If one would have worked, the other would have worked.

konaya t1_j1kxyv4 wrote on December 25, 2022 at 5:13 AM

I'm assuming the other phone was cordless.

Bingo.