The latest Netvitesse SSO with Thinclients and dynamic extensions to the Mitel Desktop Phones with Citrix 6.5 and now lock and unlock is supported.
The process is simple the phone is registered automaticly to the Single Signon Server and the Citrix session initiates the logon process for the user on the desktop Phone.
Used : HP thinclients based on windows 7 and Citrix XenApp 6.5 with full desktop.