[SIPForum-discussion] RTP packet loss

[Raghul Prasanna]

HI All,
Thanks for your responses.
Apart from the AudioCodes, I have already tried most of the things suggested by you guys.Checking wireshark stats etc yes it does say packet loss\ wrong sequence\ skew etc, but my question is where is it happening.
Certainly not in our network.Talked with ISP, not very helpful though. They even advise me to run MTR traces,which is NOT very useful in my opinion and when I share the MTR trace results with them unfortunately they were NOT able to pin point anything.
Problem is some of these calls cross continents.
Sometimes I wish we just stayed TDM, until we find enough bandwidth for everyone....
So what do you guys reckon, somehow get the ISP to capture some traces on their equipment to show the media leaves them and take it from there?
Any other thoughts please?
Raghul

 

     On Friday, 20 February 2015, 3:31, Aniella Juverdeanu <Aniella.Juverdeanu at telus.com> wrote:
   

 #yiv7923940525 #yiv7923940525 -- _filtered #yiv7923940525 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #yiv7923940525 {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;}#yiv7923940525 #yiv7923940525 p.yiv7923940525MsoNormal, #yiv7923940525 li.yiv7923940525MsoNormal, #yiv7923940525 div.yiv7923940525MsoNormal {margin:0cm;margin-bottom:.0001pt;font-size:12.0pt;}#yiv7923940525 a:link, #yiv7923940525 span.yiv7923940525MsoHyperlink {color:blue;text-decoration:underline;}#yiv7923940525 a:visited, #yiv7923940525 span.yiv7923940525MsoHyperlinkFollowed {color:purple;text-decoration:underline;}#yiv7923940525 p {margin-right:0cm;margin-left:0cm;font-size:12.0pt;}#yiv7923940525 span.yiv7923940525EmailStyle18 {color:#1F497D;}#yiv7923940525 .yiv7923940525MsoChpDefault {} _filtered #yiv7923940525 {margin:72.0pt 72.0pt 72.0pt 72.0pt;}#yiv7923940525 div.yiv7923940525WordSection1 {}#yiv7923940525 Yes, AudioCodes SBC – we do not use it – just read their white paper  thanks  From: Rajesh Kumar Talluri [mailto:rajeshsources at gmail.com] 
Sent: February 19, 2015 06:39 PM
To: Aniella Juverdeanu
Cc: Raghul Prasanna; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] RTP packet loss  Hi Aniella,You mean to say that Audiocodes box will check the QoS parameters on the service provider network and provide 1-2 sec. Are you talking about Audiocodes SBC here? Or Is it a different?Thanks,RajOn Feb 19, 2015 12:56 AM, "Aniella Juverdeanu" <Aniella.Juverdeanu at telus.com> wrote:
>
> Hi,
>
>  
>
> You might need to analyze the Jitter buffer on the segment that is the access into your network. If yours I setup too low, then RTP packets are discarded. Usually this happens if the access is from IP networks where there is no QOS (i.e. ISP providers). AudioCodes has a good approach to this adaptive jitter buffer – can provide up to 1-2 sec JB
>
>  
>
> Thanks
>
> Aniella
>
>  
>
> From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of Raghul Prasanna
> Sent: February 13, 2015 04:07 AM
> To: discussion at sipforum.org
> Subject: [SIPForum-discussion] RTP packet loss
>
>  
>
> HI All,
>
>  
>
> If there is rtp packet loss resulting in bad audio and the loss is NOT happening on the network we control, what are the options to identify where it's happening and possibly correct it.
>
>  
>
> MTR traces, I am unable to rely on this as core routers generally tend to discard these ICMP packets giving us distorted results.
>
>  
>
> Any thoughts?
>
>  
>
> Thanks
>
>
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