| Oracle® Communications EAGLE Commands Error Recovery Reference Release 46.6 E93312 Revision 1  | 
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For the  chg/ent-card command, the Shelf FAN bit must be  turned on before E5-ENET-B, E5-APP-B, and SLIC cards  can be provisioned.
For the  ent/chg-e1 command, the Shelf FAN bit must be  turned on before HC-MIM cards that are used as E1 or SE-HSL cards can be used  in a system shelf. 
For the  ent/chg-t1 command, the Shelf FAN bit must be  turned on before HC-MIM cards that are used as T1 or ST-HSL-A cards can be used  in a system shelf. 
For the  ent-slk command, the Shelf FAN bit must be turned  on before links a16-a63 and b16-b63 can be provisioned. Links a16-a63 and b16-b63 are only applicable for SLIC cards running the IPSG application. 
Note:
Once a feature that is controlled using a feature bit has been turned on, it cannot be turned off.Recovery