I have (2) consoles that are on the same opt11c. anum 1 and anum 2. When anum 2 get's out of busy mode the led blinks instead of ringing. I noticed that they are on the same card in shelf 0. I was under the impression that you could only have 1 console per card and no other phones on there as well. Could that be the problem or maybe a timers issue? They said it was working just the other day and now it isn't. I did verify that it only blinks and doesn't ring. They both have power as well. Thanks!