The management center 30 is shown in more detail in FIG 2 and includes: a management server 32 executing a management application 34, an interface 36 to a human operator, and {HEAD ~ a wireless protocol server} 38 in {TAIL ~ the form} of a WAP server 
The management center 30 is shown in more detail in FIG 2 and includes : a management server 32 executing a management application 34 , an interface 36 to a human operator , and { HEAD ~ a wireless protocol server } 38 in { TAIL ~ the form } of a WAP server
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