I don't think it would matter changing the slot before or after when going PEKU to PDKU. I've done several in a 424 until all the electronic phones were gone and didn't lose any programming.

And if you find that none of the phones work, press the three white circuit breakers on the power supply. I have had situations where I swapped the card, reprogrammed in 03 and nothing worked until I got the bright idea to push the circit breakers on the power supply in that cabinet and all 8 stations came up.


THE Bracha, old blond specialist in Rube Goldberg solutions.