Chapter 10. Statistics
Port UA Time
Time in seconds the network port is unavailable for data delivery. This can mean that the T1 link is down or in test, or that the PVC signaling state is down.
Line Code
Number of line code violations. Line code violations include BPVs that are not part of B8ZS code or excess zero violations.
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.
DSX-1 Port Statistics Available on Front Panel
TSU Loop State
Current state of the incoming T1 circuit.
Line Code
Number of line code violations. Line code violations include BPVs that are not part of B8ZS code or excess zero violations.
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.
DBU Port Statistics Available on Front Panel
PRI Loop State
Current state of the PRI circuit.
D Channel State
Current state of the PRI D channel (PRI only).
DBU Status
Current state of the DBU circuit (not available for PRI card). For PRI status, see Call Manager on page
Time in DBU
The amount of time (in seconds) that the unit has been in dial backup mode.
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