ADTRAN 1200212L1, User Manual

Page: 116 / 172

Chapter 10. Statistics
10-12 DSU IQ User Manual 61200212L1-1
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
D
ISCARD
F
RAME
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
D
ISCARD
F
RAMES
field.
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 16 to 1007.
If both management DLCIs are dedicated, the E
NCAPSULATION
E
RROR
field is not applicable. See Management DLCI 1 and 2 (DLCI 1 and 2) on
page 7-5 for more information.