[GreenKeys] question about TTY signals and Telephone Signals

[Eugene Hertz]

Hello all.

I recently purchased a house and in it there is fairly extensive telephone wiring. Each room has 6 pair and in the basement there are punchdown blocks and a multi-line telephone system. I believe it is an analog system as the phones that are used use RJ-11 not RJ-45 (although that might not tell the whole story). Only 2 pair are used for each phone

My ham shack/workshop is in a spare bedroom on the 2nd floor. My office is on the first floor. I was thinking of using the existing wiring to create a loop from the shack down to the office. Does anyone know if the proximity of 60ma current loop signals might cause interference to the telephone signals running adjacent to them on the same cable? Please note that I might also want to run 60ma polar for a teletype ticker model (401?) if that makes matters better or worse.

Please give me your opinions of whether you think this is a bad idea to run them together.  

thanks
Eugene