Event in Cisco Unified Operations Manager makes no sense

Hi
The ennvironement is as follows:
3 CCM 4.x Cluster and lot of h323 Gateways. All is controlled by a gatekeeper.
For monitoring purposes I'm running a Cisco Unified Operations Manager 2.0.2. From a h323 gateway I recieve an event, that there happend packet loss and that the MOS was below the critical MOS threshold. As destination I see another h323 gateway in the same cluster. What does this mean? For me there is never voice between these 2 gateways. For me this event makes no sense. On the gateways everything looks fine, there are no drops or errors neither on the interface nor on the service-policy.
Any idea why it's generating this event?
Regards
Peter

Hi Peter,
I think it would be best if you could get a packet capture (at the point of the 1040 sensor) during the times of one of these low MOS scores and then open a TAC case. The TAC engineer will need to contact the 1040 sensor developers to understand how exactly they are calculating packet loss and the packet capture will help greatly in finding the root cause. There are two components to packet loss for a 1040 sensor.
1) Actual network packet loss (i.e. based on missing sequence numbers).
2) Packets lost in the jitter buffer emulation (packet discards). This will
count as a packet loss for any packet that arrives 20ms past its expected
arrival time OR any "out of order" packet. Since the packets for a G711 are
sent at a 20ms rate, a packet which is delayed 20ms may arrive out of order and
be counted as lost.
Sri

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