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Verifying K Validity; Sck (Air Interface Encryption Class 2); Tmo Sck; Dmo Sck - Motorola MTM800 E Ausführliche Bedienungsanleitung

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Verifying K Validity

Procedure:
1 From the home screen, press the
2 Select Security → K Validity.
3 Your radio displays:
K is Valid — the infrastructure can authenticate your radio.
K is Invalid — the infrastructure is unable to authenticate your radio. Please call your service provider to
restore the key to your radio.

SCK (Air Interface Encryption Class 2)

SCK (Static Cipher Key) is a secret key used for the Air Interface Encryption Class 2. It may be used to encrypt calls
and data in TMO and DMO. The SCK air interface encryption provides service confidentiality between radios and
infrastructure when in TMO, and between radios when in DMO. A radio is capable of being loaded with up to 32
SCKs. Specific keys are used for encrypting the air interface.
Any mismatch between radios and/or infrastructure impacts communication – only those using the same key as the
transmitting party are able to decode and hear the communication.

TMO SCK

Use of SCKs in TMO needs to be enabled by your service provider. The SCKs used in TMO are called TMSCKs.

DMO SCK

Use of SCKs in DMO needs to be enabled by your service provider. The SCKs used in DMO are called DMSCKs.

Changing DMO SCK

Procedure:
1 From the home screen, press the
2 Select Security → DMO SCK.
3 Press Next.
4 Radio displays Change to version .
5 Select one of the following:
Yes — to change the key. Your radio displays Key version changed.
No — to leave the key. Your radio displays Code Not Changed.

Verifying TMSCK Validity

When and where to use: To ensure that the TMSCKs in the radio are valid and can be used for the air interface
encryption.
Procedure:
1 From the home screen, press the
2 Select Security → TMSCK Validity.
3 The radio displays:
TMSCK is Valid – the radio can work encrypted in TMO.
TMSCK is Invalid – the radio cannot work encrypted in TMO. Please contact your service provider to restore
SCKs to your radio.
key.
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