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Description
Future Key
Activate Future Key:
TRANSEC Encryption Overhead:
Next TEK:
Do the following steps to set the Future Key:
1.
2.
Encryption
Frame Length:
Parameters
Reset All Keys: Zerioze.
Modem Configuration
Activate the Future Key, or
•
Load and activate a new key
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The Future Key can be activated after using all the 26 TEK numbers. Then, another
set of TEK loads are available.
Overhead will increase when encryption is on.
•
TRANSEC Overhead Calculation:
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(3+16 *N) / (16 * N) where N=Frame length
TEK loads can be updated periodically up to number 26.
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The operator at the Primary modem will load the Next TEK.
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Enter the Future Key seed key and passphrase.
Generate the Future Key.
The key signature must match on both modems.
Large frame sizes use less overhead and are more efficient. However, a greater number of information
•
bits in the packet are impacted in noisy operating conditions.
Small frame sizes use more overhead but fewer bits are impacted when losing a packet. Small frame
•
sizes are useful when the information bits are distributed over a wide spectral bandwidth using DSSS
spreading.
Make sure to reboot the modem after zeroizing the TRANSEC.
•
Use the Admin \ Update tab.
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Impacts the Next TEK increment if a reboot is not done.
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The encryption state, On or Off, is maintained after zeroizing and rebooting the modem.
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SLM-5650C / SLM-5650C-ODU Satellite Modem
Parameters
6–26
Revision 1
MN-SLM-5650C
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