FCDC-3 - Backwards compatibility
From Zenitel Wiki
- If these devices are running version 126.96.36.199 or older, there will be no compatibility. There will be no connection between the FCDC-3 and these devices.
- In mixed cluster, FCDC1/2 should be set as "Not CCo". One FCDC3 should be set as "CCo" . For that reason we recommend to replace the rack side Flowires with FCDC3 when FCDC1/2 need to be replaced.
If you mix software version 188.8.131.52 (or older) and version 184.108.40.206 (or newer) on the same Flowire network, there will be limited compatibility. They will connect and let you do software upgrade, but regular operations will not work.