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MTP850 Ex/MTP810 Ex and the system. Your MTP850 Ex/
MTP810 Ex should be provided with a set of SCKs.
To verify SCK validity for TMO, press Select. The display will
show one of the following messages:
• TMSCK is Valid
– your MTP850 Ex/MTP810 Ex can work
encrypted in TMO.
• TMSCK is Invalid
– your MTP850 Ex/MTP810 Ex cannot
work encrypted in TMO. Please call your Service Provider
to restore SCKs to your MTP850 Ex/MTP810 Ex.
DMSCK Validity
From the main menu, select Security > DMSCK Validity.
SCK (Static Cipher Key) is a secret key the infrastructure
uses to encrypt call and data in the system. Air interface
encryption provides service confidentiality between your
MTP850 Ex/MTP810 Ex and the system. Your MTP850 Ex/
MTP810 Ex should be provided with a set of SCKs.
To verify SCK validity for DMO, press Select. The display will
show one of the following messages:
• DMSCK is Valid
– your MTP850 Ex/MTP810 Ex can work
encrypted in DMO.
• DMSCK is Invalid
– your MTP850 Ex/MTP810 Ex cannot
work encrypted in DMO. Please call your Service Provider
to restore SCKs to your MTP850 Ex/MTP810 Ex.
DMO SCK
From the main menu, select Security > DMO SCK
.
Key version is displayed when you select the option.
Air Interface encryption provides service confidentiality
between your MTP850 Ex/MTP810 Ex operating in Direct
Mode and another terminal or a group of terminals operating
in Direct Mode.
You can change the current key, if the key change operation
is allowed by your Service Provider.
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