4-24
Configuring E1 and T1 Interfaces
ProCurve Secure Router Modules
Table 4-5. Events That Trigger Line Errors
Error Type Triggers
BES 1-320 Path Coding Violations (PCV)
CSS Controlled Slip Seconds (CSS)
DM Bit Error Rate (BER) between .000001 and .001
ES ESF and CRC4:
–PCV
– Out Of Frame (OOF)
–CSS
– Alarm Indication Signal (AIS)
D4 or E1:
–PCV
– Out of Frame
–CSS
–AIS
–BPV
LCV Bipolar Violations (BPVs) and Excessive Zeros (EXZs)
LES • Seconds with BPVs or EXZs or Loss Of Signal (LOS)
• Seconds with Line Code Violations (LCVs)
PCV E1/D4 frame synchronization errors
CRC4 or ESF checksum error
SEFS • OOF
•LOS
SES • ESF errors:
– 320+ PCVs
–OOF
–AIS
• CRC errors:
– Severely Errored Seconds (SES)
– 832+PCVs
• E1 framing 2048+ LCVs
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