Sec.  90.473   Operation of internal transmitter control systems through licensed
fixed control points.

   An internal transmitter control system may be operated under the control and
   supervision of a control operator stationed at a fixed control point in the
   system. In such a case, the control point must be equipped to permit the
   control operator to monitor all traffic to and from fixed positions and
   mobile stations or paging units of the licensee; and the system shall be so
   designed to permit the control operator to either disconnect any operating
   position in the internal system from the transmitter control circuit or to
   close the system down entirely at will.

   [ 44 FR 67125 , Nov. 23, 1979]