I am planning a new CUCM environment with an ITSP that will connect via a CUBE. CUCM <-> CUBE <-> ITSP, it looks like I will need the CUBE-T-RED license. The two questions I have are do I need 40x licenses per HA pair for 40 trunk sessions? My reseller quoted double per HA pair. I think it should be 40x CUBE-T. Second question is would I need the CUBE-L license for any reason? In what scenario would the lineside license be used? Would that be where my ITSP is the call control endpoint? I tried to look this up but the updated licensing doesn't have a lot that I can find. The link below isn't helpful. CCW doesn't show much more than that either.
https://www.cisco.com/c/en/us/products/collateral/unified-communications/unified-border-element/data-sheet-c78-729692.html#Licensing
