I was going through Gazell link layer as well as Enhanced shortburst i found in both of them we can use payload max upto 32 bytes. Both supports 8 nodes with an host using star topology. Even the initialization and Packet identification part is also same, so here i am not clear what is the main difference between Gazell and ESB. Is it Data rate ?? Is any thing related to link layer?? Can anybody explain me in brief there roles ??