§  22.927   Responsibility for mobile stations.

   Mobile stations that are subscribers in good standing to a cellular
   system, when receiving service from that cellular system, are
   considered to be operating under the authorization of that cellular
   system. Cellular system licensees are responsible for exercising
   effective operational control over mobile stations receiving service
   through their cellular systems. Mobile stations that are subscribers in
   good standing to a cellular system, while receiving service from a
   different cellular system, are considered to be operating under the
   authorization of such different system. The licensee of such different
   system is responsible, during such temporary period, for exercising
   effective operational control over such mobile stations as if they were
   subscribers to it.