No, Unity doesn't require this but it's a really good idea... there were some fixes in SP4 having to do with RPC connections between servers in the site (among other things) that are probably worth the time and effort to upgrade all the servers for.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...