H3C LSW1FC4P0 Interface Card for S5820X-28C Ethernet Switches Command Line Interface Guide Firmware Version 9.0.7

Command Reference
Callhome
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The following is an example of the Callhome Queue Stats command:
H3C #> callhome queue stats
Callhome Queue Information
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FileSystemSpaceInUse 534 (bytes)
EntriesInQueue 3