Just had to replace a dead ACS R6 Processor, restored the program from the card and everything seemed fine ....except for one small problem: the line 1 red LED is flashing very slowly on all phones,
if you press line one you get DT and line 2 now flashes, if you pick up the handset you pick up line 2 and line one is still flashing.
Ive been installing and programming these phone for more than 20 years and have never seen this before (or if I did I don't remember it)...
Any ideas out there?

Thanks, Jim