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September 1999 P/N 880-503284-001-A1 - page 47 / 65

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Performance Monitoring

24-Hour Loss of Frame Count

A loss of frame synchronization on a T1 circuit causes a loss of all user data as long as the Out Of Frame (OOF) condition continues.

The 24-Hour Loss Of Frame Count indicates how many seconds, per fifteen-minute interval, were during an Out Of Frame condition. These are seconds during which you may be certain that no user data passed. Since there are 900 seconds in a fifteen-minute period, the value for any one interval will never exceed 900.

A typical 24-Hour LOFC display is shown below in Figure 4-7:

Figure 4-7

24-Hour Loss Of Frame Count

24

HOUR

LOFC

PERFORMANCE

DATA

5-14-98

15:28:48

Site Name: Tech Pubs NCC 2020

Valid Intervals

96

LOFC in 24 Hours

0

1, 1 Seconds in Current Interval 830

LOFC in Current Interval

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[1,1] NEAR TAC 2010 >

Reset Registers

The Reset Registers command on the Performance Monitoring Menu is used to clear out all of the accumulated information being held in the ESF registers. All of the values in the displays available from the Performance Monitoring Menu are reset to zero, the number of valid intervals is reset to zero.

A typical use of this option would be at the completion of an installation. If a T1 facility has been serviced and it is believed that any problems have been corrected it may be desirable to reset the registers so that any errors reported are known to be new.

Verilink NCC 2020 User Manual

4-7

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