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USER’S GUIDE
592 CyberSWITCH
AIS (Blue)
The number of times layer 1 has detected a qualified unframed all ones signal.
RAI (Yellow)
The number of times layer 1 has detected a qualified RAI (remote alarm indication) signal.
LAYER 1 PRI ERROR STATISTICS
Note: Layer 1 PRI error statistics apply to the line connected to the indicated slot.
Bipolar Violations
The number or times there has been either a mismatch between encoding types (B8ZS not selected)
or line noise.
ESF CRC Errors
The number of Cyclic Redundancy Check (CRC) errors in the PRI framing format (ESF framing
only).
Framing Bit Errors
The number of errors in the framing bits of the PRI layer 1 framing format.
Recv Negative Slips
The Number of PRI frames lost due to timing problems in the negative direction.
Global Parity Errors
The number of parity errors seen across all transmit and receive channels.
Recv Positive Slips
The number of PRI frames lost due to timing problems in the positive direction.
Recv Parity Errors
The number of receive parity errors.
Xmit Slips
The number of times an error has occurred in the host clock system. If the wander of the transmit
route clock is too great, data transmission errors will occur.
Xmit Parity Errors
The number of transmit parity errors.
LAYER 1 GENERAL STATISTICS
Note: Layer 1 general statistics apply to the indicated slot.
Interrupts
The number of hardware interrupts received from the layer 1 hardware device.
Forced Resynchs
The number of times layer 1 has attempted to manually synchronize to the incoming signal.