Nortel North American DMS-100 Instruction Manual page 650

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DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Trouble locating and clearing procedures (continued)
Troubleshooting a customer-reported failure
Check the operational measurements (OM) that apply to DataSPAN. Look for
high counts of cyclic redundancy test (CRC) errors in:
• OM group FRSAGENT, register PTERR for each involved agent
• OM group FRSPM, register PORTERR for each involved device
• OM group FRT1, register FRT1CRC for the involved carrier
For example, to check register FRT1CRC for OM group FRT1, type
>OMSHOW FRT1 ACTIVE 3
and press Enter.
Example of a MAP response
CLASS: ACTIVE
START:1997/08/21 21:15:00 THU; STOP:1997/08/21 21:16:10 THU;
SLOWSAMPLES:
INFO (FRT1OMINF)
FRT1LCGA FRT1RCGA
FRT1MBU FRT1CBU
FRT1SES FRT1UAS
3 FRIU 29
0
0
0
For more information on OMs, refer to Operational Measurements Reference
Manual .
To post the access channel, type
>CARR;CHAN;POST
and press Enter.
where
chan_no
is the channel number that appeared in response to the PVDNCI
command
Example of a MAP display
CARRIER
InSv
CHANNEL 1
N
CHANNEL 1 ( 24
InSv /NoLMI
To check the traffic level on the access channel, type
>QTRAFFIC
No FRIU alarms
1; FASTSAMPLES
FRT1LOF FRT1SBU
FRT1BER FRT1ES
FRT1AIS FRT1CRC
0 0 0
0 0 0
0 0 0
chan_no
Alarm BER
<–9.
x DS0)
(continued)
7;
ES SES UAS
0 0 211
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