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This section includes the following information to assist you when troubleshooting T1 interfaces:

To monitor T1 interfaces and beginning the process of isolating T1 interface problems when they occur.

Table 1 provides the links and commands for monitoring T1 interfaces.

Table 1: Checklist for Monitoring T1 Interfaces

Tasks	Command or Action
Monitor T1 Interfaces
Display the Status of T1 Interfaces	show interfaces terse t1*
Display the Status of a Specific T1 Interface	show interfaces t1-fpc/pic/port
Display Extensive Status Information for a Specific T1 Interface	show interfaces t1-fpc/pic/port extensive
Monitor Statistics for a T1 Interface	monitor interface t1-fpc/pic/port