IPO Basic edition 9.0. MWI not lighting intermittently on ETR phones

[boyce29]

This is not a consistent trouble. At times, a user will notice their MWI is on and upon checking messages, the voicemails are from the day prior. Yet...

[tosta]

We have IPO R9.0 Server Edition and are now deploying 150 DECT phones. It is expected there will be more than 100 simultaneous IP DECT calls during peak...