AltiGen MAXCS 7.0 Update 1 ACM Administration - Manual (Page 132)

Chapter 11: Board Configuration
116 MaxCS 7.5 Administration Manual
Reading the Statistics
The Statistics panel displays the number of errors that have occurred since the last system reboot or statistics
clearing. There may be non-zero values when configuring the T1 span for the first time. You can clear these
fields with the Clear button.
Error Meaning
Frame Errors
Number of framing bit errors. In T1 mode, a framing bit error is defined as
an incorrect FS-bit value. The counter is suppressed when framer loses
frame alignment
OOF Errors
The Out Of Frame counter registers every time the T1 chip is forced to re-
frame when receiving a frame with severe errors.
Rec Frame Slips
The Receiver Frame Slips counter shows the number of frame slips for
the receiver.
Line Code Errors
Line Code Error is defined as an occurrence of a bi-polar variation or ex-
cessive zeroes.
Bit Errors
Bit Errors are defined as a CRC-6 error in ESF, FT-bit error in SLC-96 and
F-bit or sync bit error in SF.
Xmt Frame Slips
Transmit Frame Slips counter shows the number of frame slips for the
transmitter
Clear button Use the Clear button to reset the statistics counters.
Note: For ideally synchronized systems, Transmit and Receive Frame Slips counters should be ‘0.’
Continuous update of the frame slips counters means that transmit and receive frequencies are not
equal. In this case, you should check the system and CT-Bus clock setup.
L1 failure: <Red Alarm>
Layer 1 failure, physical layer; Bi-
Polar Violations (BPV), Line Code
Violations (LCV), or Out Of Frame
detected
Location condition, equipment
problem.
- For excessive BPV/LCV, check AMI/
B8ZS setting.
- For OOF, check the MVIP bus master
setting.
OR
Have CO perform a line test to check
for a faulty cable or line.
[PRI only]
L2 Failure: <No Sync Flag>
Layer 2 failure, data link layer; no
sync flag has been detected in
data link layer
Check if D-channel is active or not
[PRI only]
L2 Failure: <Not
established> Layer 2 failure, data link layer; the
peer-to-peer link has not
established in data link layer
CO must activate HDLC link
Error Message Meaning Action