[AusNOG] Procurve POE Switch RTP issues

[Cameron Murray]

Mark,

When occurring there is 90kbps of RTP stream in and out of the site so I
would of said containing silence.

On Thu, Apr 16, 2015 at 7:53 PM, Mark ZZZ Smith <markzzzsmith at yahoo.com.au>
wrote:

> Not specifically with those devices, however it sounds bit like a default
> QoS processing issue. If the switches (perhaps out of the box) are looking
> at the QoS markings on the data stream packets, and not liking them, then
> they'll probably drop those packets.
>
> I've experienced switches doing QoS processing out of the box in the past
> by default (in that specific case, it was effectively marking them as
> untrusted), rather than leaving them alone (which for an ISP is an annoying
> default.)
>
> Is the silence caused by packet containing silence, or is it caused by no
> packets being delivered?
>
>
>
>   ------------------------------
>  *From:* Cameron Murray <cameron.murray at gmail.com>
> *To:* "ausnog at ausnog.net" <ausnog at ausnog.net>
> *Sent:* Thursday, 16 April 2015, 19:28
> *Subject:* [AusNOG] Procurve POE Switch RTP issues
>
> Guys,
>
> Sorry for the slightly off topic post but I'm stumped and 1000km from the
> problem.
>
> We provisioned some Snom phones this afternoon for a customer however SIP
> sessions establish and calls can be signalled however the audio/rtp stream
> is silent in both directions.
>
> We tested a softphone which worked correctly from inside their network.
>
> We have concluded that the HP Procurve 2610-48 pw may be interfering with
> the flow however this device is blind to us and we have no access nor the
> customer documentation.
>
> Has anyone seen similar issues with these devices?
>
> Regards
>
> Cameron
>
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>
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