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Video bad quality, and dropouts between 2 sites, Please help

Hi All

we are experiencing video drop outs and disconnects between 2 sites, one side has a video codec c20 and the other has a 95 MXP.

I believe they are connecting on normal profile, someone said they connect at 384k

between the sites is a 4meg mpls link, both routers have the RTP traffic in the priority queue at 1meg

what does the latency need to be for this to work?

what could be causing these drops ?

Is there anything I can check on the Tandberg devices that will help me to identify the issue ?

I have ran IP SLA on the router, here is the results

IPSLAs Latest Operation Statistics

IPSLA operation id: 10
Type of operation: udp-jitter
        Latest RTT: 232 milliseconds
Latest operation start time: 15:20:26.661 UTC Thu May 31 2012
Latest operation return code: OK
RTT Values:
        Number Of RTT: 958              RTT Min/Avg/Max: 230/232/247 milliseconds
Latency one-way time:
        Number of Latency one-way Samples: 958
        Source to Destination Latency one way Min/Avg/Max: 118/119/128 milliseconds
        Destination to Source Latency one way Min/Avg/Max: 111/112/129 milliseconds
Jitter Time:
        Number of SD Jitter Samples: 947
        Number of DS Jitter Samples: 953
        Source to Destination Jitter Min/Avg/Max: 0/2/7 milliseconds
        Destination to Source Jitter Min/Avg/Max: 0/2/17 milliseconds
Packet Loss Values:
        Loss Source to Destination: 38          Loss Destination to Source: 4
        Out Of Sequence: 0      Tail Drop: 0
        Packet Late Arrival: 0  Packet Skipped: 0
Voice Score Values:
        Calculated Planning Impairment Factor (ICPIF): 29
MOS score: 3.30
Number of successes: 10
Number of failures: 0
Operation time to live: Forever

many thanks

Carl

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