How to Check Used User License on Cisco UC560

From CCA > Troubleshoot > IOS Exec Commands, type “show platform software license”

License UDI                  : UC560-FXO-K9:xxxxxxxx
Maximum User Licenses        : 30
Used User Licenses           : 2
Available User Licenses      : 28
Base License                 : 24
CSL Base License             : 16
Max number of upgrade PAK allowed: 13

The user licenses include physical IP phones, CIPC and Jabber client. When the phones are disconnected from UC560, it will free up the license. Standard license is 24 for IP phone devices (physical, CIPC and Jabber), 4 for analog FXS devices and 2 for teleworker/VPN devices.