Upgrade and downgrade protection
1054
WebEML User Manual
To upgrade fixed modulation to adaptive modulation configuration
1. Verify that the system license key supports adaptive modulation. For more
information about how to display and update the system license key, see the
Administer software license.
2. Open the radio channel view. Take a screen capture to save all radio channel
provisioning information.
3. Which type of radio direction configuration?
a. If 1+0 Not protected, go to step 6.
b. If 1+1 protected, go to step 4.
4. Mute the spare radio channel (channel #0).
5. Set the radio direction Protection Type to No Protection.
6. Is the ATPC enabled?
a. If yes, go to step 7.
b. If no, go to step 8.
7. Disable the ATPC (unchecked) and click on the Apply button.
8. From the radio direction Mode drop-down menu, choose Adaptive Modulation
and click on the Apply button.
9. Which type of radio direction configuration?
a. If 1+0 Not protected, go to step 10.
b. If 1+1 protected, go to step 12.
10. Set the radio direction Protection Type to 1+1 HSB(SD) or 1+1 FD.
11. Unmute the spare radio channel (channel #0).
12. Verify that the radio direction is alarm free.
Caution: This is an Out-of-Service procedure. Schedule appropriate maintenance window
per local practices and procedures.
Note: If the sum of all TDM2TDM and TDM2ETH cross-connections exceed the
supported capacity for the reference channel at 4 QAM, the request to change
modulation mode is rejected.
Note: To complete the upgrade from fixed modulation to adaptive modulation
both ends of the radio hop must be upgraded.
Release 7.0.0 3DB 19286 ACAA Issue 01
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