I believe that's Multi Channel Command Class + Encapsulation
MULTI_CHANNEL_CMD_ENCAP 0x0D supporting controlling If Destination End Point is set to 0
controlling supporting If Source End Point is set to 0
supporting supporting In all other cases
I thought it was command: xxyy
xx = command class
yy = command within that class.
Then I suppose there is another attribute to identify Class version.
Also (I know its a little off the original topic) what is an endpoint? When I researched endpoint it appeared to be an http location(s), or some sort of external address. Now your use it here suggesting it is something else.