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Netvanta 6250 Out of Order Packets - Extreme amount reported

I have a Netvanta 6250 set up to handle calls at a site that we manage. My connection on ETH 0/1 is directly to the Modem for the internet provider at the site, 50m circuit. The customer is complaining of call quality and dropped calls. RTP shows everything as being good with the exception of 1 call. But voice quality-stats are showing a lot of out of order packets. If my math is correct, at 50 packets per second some of these calls cannot possibly have that many out of order packets, or am I missing something?

Is there anything else I need to look into as the customer complains about static on the line (I have ruled out physical hardware such as the phone) and also dropped calls.

Voice Quality Monitoring is ENABLED

Simulated jitter buffer: adaptive 10/50/200 ms (min/nominal/max)

Quality    Active Streams  Call History   All Streams  MOS Range

---------  --------------  -------------  -----------  ---------

Excellent  6               100            100          4.400 - 4.000

Good       0               0              0            3.999 - 3.600

Fair       0               0              0            3.599 - 2.600

Poor       0               0              0            2.599 - 0.000

---------  --------------  -------------  -----------

Totals:    6               100            100                            

         Start                                        Out of  Discard   Delay

ID       Time     From       To         Length Codec  Order    Pkts*  Avg   Max

--------------------------------------------------------------------------------

0:19   0       0       77    80

300605   4:39 PM  7733       0          4:33   G711u  0       0       95    100

300711   4:59 PM  7733       0          2:00   G711u  0       2       89    100

300761   5:02 PM  blocked    7733       0:13   G711u  12921   0       50    50

301216   5:52 PM  7733       1234       0:26   G711u  15046   0       50    50

302595   8:52 PM  7733       0          0:07   G711u  0       0       91    100

302606   8:53 PM  7733       0          0:26   G711u  0       0       79    80

302938   9:34 PM  blocked    7733       0:54   G711u  52701   0       50    50

305885   10:25 AM 7733       5600       1:05   G711u  0       0       83    90

305928   10:27 AM 7733       redacted 19:02  G711u  1706    0       50    50

306176   10:46 AM 7990       7733       0:16   G711u  808     0       50    50

308398   2:03 PM  7990       7733       0:15   G711u  2713    0       50    50

311867   9:37 PM  7733       1234       6:57   G711u  765     0       50    50

311918   9:45 PM  7733       1234       0:14   G711u  20053   0       50    50

317464   3:58 PM  7991       911        0:37   G711u  0       0       50    50

317475   3:58 PM  7992       911        2:01   G711u  0       0       50    50

355008   2:08 PM  7733       redacted 4:48   G711u  15008   0       50    50

358495   6:39 AM  7732       5602       1:08   G711u  0       0       79    80

358841   7:58 AM  7732       5602       0:57   G711u  0       0       78    80

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Honored Contributor

Re: Netvanta 6250 Out of Order Packets - Extreme amount reported

All of the examples with extreme numbers of out-of-order packets involve extension 7733. I'd take a look at its physical connection, cabling, possible duplex mismatch, PC behind the phone spewing at wire speed, etc. Perhaps the phone itself.

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New Contributor III

Re: Netvanta 6250 Out of Order Packets - Extreme amount reported

edward,

Were you able to locate the issue?

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