I'm reposting this from the other forum, I thought it was more fitting here.
I just completed an SRST test for a remote site. The phones registered to the local gateway and when the test was complete and connectivity restored they registered back to CUCM without a problem with the exception that the MWI light on all phones are flashing. Not a solid "on" state as if there were a message but flashing on and off.
Also, I tried having them dial the MWI extensions with not change.
Any ideas? This is CUCM 8.6.2.