CELL SITE MAINTENANCE Outsourcing the non-core operations and maintenance function allows our clients to focus resources on other critical aspects of their business. MSI offers the wireless market segment a comprehensive solution for preventative maintenance, facility management, and emergency response/restoration for cellular sites and mobile switch centers. SCHEDULED & ON CALL SERVICES On call services are performed, as necessary. These services can be either emergency response or routine in nature. Our call center is operational 24x7 to handle the emergency callouts. Typical emergency callouts are AC power failure at the cell site or high-temperature alarms from the HVAC units. Emergency callouts require immediate response, regardless of the time of day. Routine callouts are situations