NEC Univerge SV8100 Features And Specifications Manual page 1048

Issue 13.0
With Version 8000 and higher, the Encryption feature will only work if Encryption

License (0030) is installed.
Default Settings
60 Day Free License is enabled (Version 2500 and lower).
60 Day Free License is disabled (Version 3000 and higher).
System Availability
Terminals
None
Required Component(s)
Refer to the particular feature for required component(s)
Related Features
Programming from Multiline Terminal
2 - 1014
UNIVERGE SV8100
Licensing