[Freeswitch-users] To Proxy Media or Not

[Steven Ayre]

"Nominal (less than 10%), Moderate (11-30%), or more?"

I think it's far less than even that 10%.

-Steve


On 9 March 2011 17:13, Max Clark <max.clark at gmail.com> wrote:

> Advantages of Proxy Media:
>
> 1) Support codecs not natively supported by FreeSWITCH
> 2) Lower CPU resources on FreeSWITCH
>
> So for 1) I'm really only concerned with t38/fax over g711. With our
> current configuration faxing (although unsupported) is working just
> fine. What should I expect if I revert to media mode?
>
> 2) If I disable transcoding, what kind of difference in resource
> utilization should I expect? Nominal (less than 10%), Moderate
> (11-30%), or more?
>
> Thanks,
> Max
>
> On Wed, Mar 9, 2011 at 9:02 AM, Kristian Kielhofner <kris at kriskinc.com>
> wrote:
> > If your intention is to *strictly* hide topology proxy media will
> > rewrite the IP address in the SDP but that's about it.  Technically
> > that counts as "topology hiding".  Other SDP parameters, however, will
> > pass through and leak various bits of information about the endpoints
> > behind the SBC:
> >
> > - Codec support
> > - Payload types
> > - Other "random" various SDP parameters
> >
> > Most real SBCs will rewrite the entire SDP (as FS does by default).
> >
> > Another thing to consider - the vast majority of FS users do not use
> > proxy media (and most that do use it incorrectly).  This leaves you
> > open to the possibility that you'll experience strange edge case bugs
> > using a media mode different from the majority of the rest of the FS
> > user base.
> >
> > On Wed, Mar 9, 2011 at 10:52 AM, Max Clark <max.clark at gmail.com> wrote:
> >> Hello,
> >>
> >> I have a couple of FreeSWITCH boxes functioning as SBCs on our
> >> network. We need them to:
> >>
> >> - Route Calls
> >> - Function as B2BUAs for call logging
> >> - Hide topology from the endpoints
> >>
> >> They do not need to:
> >>
> >> - Intercept/play audio
> >> - Manipulate the SDP
> >> - Transcode
> >> - Process anything other than SIP
> >>
> >> So these machines have been running with Proxy Media enabled in the
> >> dialplan. Is the the proper/recommended way of configuring for our
> >> environment/needs? Is the minimal gain of resources by not processing
> >> the RTP worth it?
> >>
> >> Thanks,
> >> Max
> >
> >
> >
> > --
> > Kristian Kielhofner
> >
>
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