Chapter 10. Statistics
Yellow Alarm
If ALARM is displayed, the telco end of the T1 was out of frame sync one or more times during the given interval.
PLL Alarm
ALARM displayed in this field usually signifies that both ends of the T1 circuit are set to provide timing.
Path Code
Number of path code violations. Path code violations include frame bit errors for D4 framing and superframes with CRC errors for ESF framing.
Line Code
Number of line code violations. Line code violations include BPVs that are not part of B8ZS code or excess zero violations.
Length Error
Number of frames received with fewer than 5 octets or greater than 4500 octets. This link violation is also reflected in the DISCARD FRAME field.
EA Violation
Number of frames received with an error in the extended address (EA) bit field of the frame relay header.
Encapsulation Error
Number of frames received on a dedicated management DLCI that have RFC 1490 errors. These errors are also reflected in the
DISCARD FRAME field.
If both management DLCIs are shared, the ENCAPSULATION ERROR field is N/A. See the section Management DLCI 1 and 2 (DLCI 1 and 2) on page
Inactive DLCI
Number of frames received on an inactive DLCI.
Invalid DLCI
Number of frames received on a DLCI that is out of range. The valid DLCI range is
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