Breaks in physical plant that occur in maintaining a public switched telephone network (PSTN) are tracked by receiving notices that correspond to incidences in which physical plant is broken in performing maintenance tasks on the PSTN for a defined time interval. Information specifying a total number of maintenance tasks performed on the PSTN during the defined time interval is also received. The information associated with the maintenance tasks in which the physical plant in the PSTN is broken and the information associated with the total number of maintenance tasks performed on the PSTN is stored in a searchable database. By storing PSTN maintenance information related to incidences in which physical plant is broken along with information related to the total number of maintenance tasks performed, a database user may be able to track whether the number of times that physical plant is broken is acceptable in view of the total number of maintenance tasks being performed or whether action needs to be taken to reduce the number of times that physical plant is broken by technicians in servicing the PSTN.

 
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> Diagnostic checking of an inter-messaging network

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