Ever since I installed a new PRI circuit (which replaced another carrier's regular T1) my users' message lights stay on, even after they've listened to their messages. Octel vendor checked and correct MCK signals are being sent after he left test messages. Someone else recently posted about a very similar problem and said the problem was "on the route itself" and that the trunks were not releasing for 120 seconds. I've looked all over the RDB in LD 16 but don't really know what I'm looking for. Could it be on the carrier's end? or do you think this problem is completely unrelated to the new PRI T1? they're getting very upset and I'd really like to resolve this for them. Thank you.