Hi All, I have been looking at options to provide a basic failover function without the requirement to double up on licences. There is a design I am considering, although I would like to see if anyone else has implemented a similar solution or of anyones thoughts on whether this is possible or not. Customer site requires a 64sc licence to accommodate 80 staff. Instead of going with the 64sc licence, could I go with 2 x 32sc licences running on 2 separate Windows Servers connected using a 3CX bridge. 40 staff on SystemA and 40 staff on SystemB I would then configure all 80 extensions on both SystemA and SystemB, therefore half the extensions on each system will be unregistered. If a server fails could the phones then have a backup server configured to register with? (SystemA extensions failover to SystemB and vice versa), obviously with limited functionality such as voicemails, simultaneous calls etc. until the failed server is back online. This would not be as robust as a VMware HA or FT type failover, but purchasing 2 x 32c licences and 'load balance' between the two systems is cheaper than 2 x 64sc licences purely for the failover scenario. Any info on past experiences and other failover options are also very welcome.