2.0 MB ISDN PRI Alarms

[Gigaic]

Calls are dropping on one of my PRI links and I suspect it is unstable (DCH sometimes goes down briefly and re-establishes) and the problem is coming from the far end (Telco), but require confirmation and an explanation of what is actually happening. See printout below:

.lcnt 3

PRI2 LOOP 3
MNT NNDC NNC OOS
BPV- 000 000 000 000
FAP- 000 000 000 000
SLP- 000 000 000 000
CRC- 007 000 000 000
G2 - 000 000 000 007
MAINT NONEWCALL UNAVAIL SEVERE
TOTAL 24HR BPV - 000000000 000000000 000000000 000000000
TOTAL 24HR CRC - 000000009 000000000 000000000 000000000
TOTAL 24HR FAP - 000000000 000000000 000000000 000000000
TOTAL 24HR SLPREP - 000000000
TOTAL 24HR SLPDEL - 000000000
TOTAL 24 HOUR G2 AIS -000000157
TOTAL 24 HOUR G2 LFAS -000000064
TOTAL 24 HOUR G2 LMAS -000000000
TOTAL 24 HOUR G2 RAI -000001498
TOTAL 24 HOUR G2 LOS -000000000
TOTAL 24 HOUR G2 RAIE -000000000


Same link's printout about an hour later:

.lcnt 3

PRI2 LOOP 3
MNT NNDC NNC OOS
BPV- 000 000 000 000
FAP- 000 000 000 000
SLP- 000 000 000 000
CRC- 008 000 000 000
G2 - 000 000 000 007
MAINT NONEWCALL UNAVAIL SEVERE
TOTAL 24HR BPV - 000000000 000000000 000000000 000000000
TOTAL 24HR CRC - 000000010 000000000 000000000 000000000
TOTAL 24HR FAP - 000000000 000000000 000000000 000000000
TOTAL 24HR SLPREP - 000000000
TOTAL 24HR SLPDEL - 000000000
TOTAL 24 HOUR G2 AIS -000000157
TOTAL 24 HOUR G2 LFAS -000000064
TOTAL 24 HOUR G2 LMAS -000000000
TOTAL 24 HOUR G2 RAI -000001538
TOTAL 24 HOUR G2 LOS -000000000
TOTAL 24 HOUR G2 RAIE -000000000
.

Note that the MNT-CRC increased from 7 to 8 and the G2 RAI from 1498 to 1538.
Can anybodt explain to me exactly what is happening so that I can pick it up with the Telco?

Thanks
George

 

[dlesap]

You can see G2 RAI increase a lot. RAI is Remote Alarm Indication. That's might be enough to understand the far end have a problem.

AIS is Alarm Indication Signal. That's coming from the network ONLY...!!!

Clear your counter to have a clear view of it : RCNT in LD 60