Re: [AVT] Another question on RFC 4103

[Marc Petit-Huguenin <petithug at acm.org>]

Gunnar Hellstrom wrote:
> Marc,
> See answers inline: 
> 
> Gunnar
> -----Original Message-----
> From: Marc Petit-Huguenin [mailto:petithug at acm.org] 
> Sent: Saturday, April 18, 2009 10:15 PM
> To: Gunnar Hellstrom
> Cc: avt at ietf.org
> Subject: Re: [AVT] Another question on RFC 4103
> 

[...]

> OK, so your answer is that the PMTU must be considered as an implicit
> maximum character transmission rate, and must override the provided cps if
> it is higher than the value calculated from the PMTU.
> 
> <GH: No, if you really have a low limit in allowed datagram size, I suggest
> that you occasionally reduce the packet interval. Not to zero as you
> proposed, because that is not allowed in RTP, but just as much shorter than
> 300 ms as you need to get your long text transmitted.
> Or do you have any other proposal for how to handle your case? >    

I am not proposing anything, I am just trying to understand how this
is supposed to work.  My current understanding is that the cps is an
average of the 10 last seconds but that text blocks that creates RTP
packets exceeding the path MTU must be smoothed off multiple RTP
packets.

Thanks.

-- 
Marc Petit-Huguenin
Home: marc at petit-huguenin.org
Work: petithug at acm.org