[asterisk-dev] extend IAX2 IE proposal

[Tilghman Lesher]

On Tuesday 12 December 2006 12:08, Eric "ManxPower" Wieling wrote:
> Russell Bryant wrote:
> > Mihai Balea wrote:
> >> That is the theoretical maximum UDP packet size.  As I mentioned
> >> in one of my previous emails, Mac OSX limits UDP packets to
> >> approx. 9K. I'm sure there are other systems out there that would
> >> enforce similar limits (I am thinking embedded systems).
> >
> > Ah.  Well, for this reason, as well as concerns of having to
> > retransmit an extremely large Full frames, I would say that the
> > text in the RFC describing this new segmented information element
> > method should only be used in situations where the payload is
> > "slightly" larger than 255 bytes, such as the case with the OSP
> > token information, which will take 4 segments.  However, the text
> > should strongly discourage use of this method for extremely large
> > amounts of data.
> >
> >> Even if ~ 64K would be achievable, what if I need to transmit 65K?
> >> The solution does not scale well and limits like this can be
> >> easily exceeded in today's applications.
> >
> > If we come to a point where we would like to implement the ability
> > to do transfers of this size, then we will have to handle it with a
> > separate method.
>
> Doesn't IAX2 support transfer of images (GIF, JPG, etc)?  If so, how
> is that handled?

They're encoded in mini-frames, as part of the media exchange, not in
full frames.

-- 
Tilghman