112
Air Encryption Key Deletion
Please check with your Service Provider whether the
terminal is provided with air interface encryption keys.
You can delete the air interface encryption keys from the
terminal by entering the following sequence from the keypad:
Side Button 1, Side Button 1, Side Button 1,
Side Button 2, Side Button 2, Side Button 2
K Validity
From the main menu, select
Security > K Validity
.
K (Key) is a secret key the infrastructure uses to authenticate
the MTP850 Ex/MTP810 Ex in the system. It is part of the
authentication that provides service confidentiality between
your MTP850 Ex/MTP810 Ex and the system.
To verify K validity, press
Select
. The display will show one of
the following messages:
•
K is Valid
– the infrastructure can authenticate your
MTP850 Ex/MTP810 Ex.
•
K is Invalid
– the infrastructure shall not authenticate your
MTP850 Ex/MTP810 Ex. Please call your Service Provider
to restore K to your MTP850 Ex/MTP810 Ex.
TMSCK Validity
From the main menu, select
Security > TMSCK 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
It takes a minute for this feature to delete all the enryption keys
from the radio. During this time please do not remove the
battery.
Using this feature will disable the terminal, and your
Service Provider will need to re-enable the terminal.
Deletion should be performed in idle TMO/DMO or Emergency
Operation.
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