3300 Echoing and dead air space

[YnotPhone]

Good day Mitel Techs...

I have an issue with a 3300 running 7.1.4.9 (yes, I know it's outdated, but that is all they need for the time), I'm running 1 NSU with 2-PRI's.

The issue I am having is; the customer states they have echo on their phones at times(IP Sets), or when a queue receives a call(at times) there is dead air, when connecting/ in the middle/ or at the end of a conversation? I have not presonally heard or duplicated this issue, so I am going off the customer comments.

I have checked the logs, there are Software Errors stating:
"Audio Quality Report -- Excessive TDM Transmit failuresMCC Tx reported 14 failures on MCC ch 16Received 6778 packets from IP phone xxx.xxx.xxx.xxx"
I have this message from 6 failures all the way upto 132 failures!

Then I checked the Maintenance logs and I see:
"IP Network Dropped 2.83 percent of Packets from phone xxx.xxx.xxx.xxxTotal Rx: 2571 Lost=75 maxLossBurst=2 1 in a row: 73 2 in a row: 1 3-5 in a row: 0 6-10 in a row: 0 11 or more: 0"
I have this message from 2.00 - 3.02%

If anyone can tell me if this is the issue, I would be in your debt! Or any other solution to this...

Thanks

 

[nytalkin]

Are these problems only during peak traffic? You may need addional DSP resources, possibly network issues as well.

NO GOOD DEED GOES UNPUNISHED!

 

[YnotPhone]

Thanks for the response nytalkin,

The customer tells me it happens erratically, when ever the system feels like it...

Like I said, I couldn't produce the same issues or effects, or they never occured when I was near them so limited troubleshooting - other than standard testing was completed onsite.

I went to the site and replaced the 2 - Quad DSP's in the system yesterday morning, thinking that it may fix the issue, but the only thing that was fixed was: no more dropped calls. But now there are dead air spaces... I'm at the end of my wits! I have my Megalink (PRI troubleshooters) involved and they are not seeing any anomalies. I had the ILEC change their HRU (PRI Card) and it ran well for 3 weeks, that was about 1.5 months ago.

 

[kwbMitel]

I would suspect issues with the network.

Either Data traffic is crossing over to the Voice VLAN or there is/are congestion points with routers.

I would suggest a network assessment be done to determine where/why the packets are being lost/delayed

*******************************************************
Occam's Razor - All things being equal, the simplest solution is the right one.

 

[YnotPhone]

Thanks kwbMitel,

I have the customer doing a complete network scope.

I will keep you informed as what happens.