[asterisk-dev] extend IAX2 IE proposal

Eric "ManxPower" Wieling eric at fnords.org
Tue Dec 12 11:08:44 MST 2006


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?


More information about the asterisk-dev mailing list