User's Manual
DEFINITY ECS Release 8.2 Maintenance for R8.2csi 
555-233-119  Issue 1
April 2000
Maintenance for csi systems 
1-123ATM Tips 
1
Figure 1-51. A500: show stats sonet a1.2 screen
Ensure that the fields have the values indicated below.
Receive Cell 
Count
Each field’s values should be increasing if the TN230X is 
actively sending and receiving cells with the A500. (Even if 
a TN230X did not achieve board insertion, it will still try to 
talk to the A500.)
Transmit 
Cell Count
If neither field is increasing, the A500 port may have been 
marked down using the admin down command. Use the 
show system interfaces command to verify that the Admin 
Status is up.
If the Receive Cell Count is increasing but the 
Transmit Cell Count is not increasing, this may be 
because the port was administered with no UNI signaling 
(admin link command). Use the show signaling summary 
command to ensure that Signaling is UNI3.1.
The error counters may not be zero, but should not be large 
either compared to the receive and transmit cell counters. If 
the counters are large and increasing, check the fiber 
integrity. Make sure the fiber pairs are securely plugged into 
both the TN230X and the A500.
If the fiber has been pulled and reinserted as part of fault 
diagnosis, the non-zero Loss of Signal Err counter 
may be correct.
 Sonet per Port Statistics 
--------------------------------- 
 Receive Cell Count: 80654
 Transmit Cell Count: 79555
 Section Level Bit Err: 1
 Line Bit Err: 1
 Line FEB Err: 168
 Path Bit Err: 1
 Path FEB Err: 98
 Correctable HCS Err: 0
 Uncorrectable HCS Err: 0
 Loss of Frame Err: 1
 Loss of Signal Err: 0
 Out of Frame Err: 0
 Path Signal Label: 19










