ADTRAN 1200275L1, Руководство пользователя

Страница: 137 / 198

Chapter 10. Statistics
61200275L1-1 TSU IQ+ User Manual 10-25
Red Alarm
If A
LARM
is displayed, a loss of frame synchronization occurred one
or more times during the given interval (applies to PRI DBU card
only).
Yellow Alarm
If
A
LARM
is displayed, the telco end of the T1 was out of frame sync
one or more times during the given interval (applies to PRI DBU
card only).
PLL Alarm
A
LARM
displayed in this field usually signifies that both ends of the
T1 circuit are set to provide timing (applies to PRI DBU card only).
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 (applies to PRI DBU card only).
Line Code
Number of line code violations. Line code violations include BPVs
that are not part of B8ZS code or excess zero violations (applies to
PRI DBU card only).
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.