NEC Univerge SV8500 Operation And Maintenance Manual page 828

The following shows the relationship between SEC value and encryption on a connection pattern basis.
Figure 7-6 The Relationship between SEC value and Encryption
[1] non-IP terminal and non-IP terminal
Terminal
specified by DCON
[2] IP terminal and IP terminal (SV8500: encryption is valid)
Terminal
specified by DCON
[3] IP terminal and IP terminal (SV8500: encryption is invalid)
Terminal
specified by DCON
[4] IP terminal and IP terminal (SV8500: encryption is valid)
Terminal
specified by DCON
[5] IP terminal and IP terminal (SV8500: encryption is valid)
Terminal
specified by DCON
[6] non-IP terminal and IP terminal (SV8500: encryption is valid)
Encryption Not Provided
Terminal
specified by DCON
[7] non-IP terminal and IP terminal (SV8500: encryption is invalid)
Encryption Not Provided
Terminal
specified by DCON
[8] IP terminal and non-IP terminal (SV8500: encryption is valid)
Terminal
specified by DCON
Legend:
: IP terminal (with encryption)
Encryption Not Provided
Encryption = OK
Encryption = NG
Encryption Not Provided
Encryption Not Provided
IPPAD
IPPAD
Encryption = OK
IPPAD
: IP terminal (without encryption)
CHAPTER 7
Encryption = OK
Encryption = NG
Encryption Not Provided
: non-IP terminal
– 781 –
Maintenance Commands
SEC = blank
SEC = O
SEC = blank
SEC = blank
SEC = X
SEC = O
SEC = blank
SEC = blank
: DCON target station