We found an issue regarding changing status of voicemail message. This problem only occurred when a large number of messages is stored.
We have fixed this problem in Tellus Voice with version 126.96.36.199.
In Tellus WebApps we have update TellusAPI to be compatible with Tellus Voice 188.8.131.52. This means that Tellus WebApps 184.108.40.206 must be upgraded if Tellus Voice 220.127.116.11 is installed and vice versa.