I've already posted about the fact that one of my T1s is down and I asked how come my users couldn't call out over my back-up route. I mentioned this in passing just now to a colleague of mine and he said it's probably because the T1 is disabled, as opposed to busy. I thought that if the circuit was busy OR disabled outbound calls would go over my second route (POTS). Is it true that that only happens if the circuit is BUSY? Please advise. Thank you.