asterisk users - Sep 2009 - Payload size of 30ms

Here's the story...

Nortel system set to use g711 @ 30ms payload ... Asterisk box would  
need to communicate to that box @ 30 ms and another end point at 20 ms.

I've seen discussions of setting this to a different size, but seems  
to be limited to the entire codec and not on a per peer basis.

Anyone have luck with this?

The Asterisk can be 1.4 or 1.6.x... I've a preference for 1.6.0.x but  
it's not set in stone :)


Fred Posner
fred at teamforrest.com

2 sep 2009 kl. 22.40 skrev Fred Posner:
> Here's the story...
>
> Nortel system set to use g711 @ 30ms payload ... Asterisk box would
> need to communicate to that box @ 30 ms and another end point at 20  
> ms.
>
> I've seen discussions of setting this to a different size, but seems
> to be limited to the entire codec and not on a per peer basis.
>
> Anyone have luck with this?
>
> The Asterisk can be 1.4 or 1.6.x... I've a preference for 1.6.0.x but
> it's not set in stone :)
You can set it per peer in sip.conf when you add the allowoption.

There's a readme that documents the payload sizes acceptable for  
different codecs.

 From sip.conf.sample:

;allow=ilbc                     ; see doc/rtp-packetization for  
framing options


/O


---
* Olle E Johansson - oej at edvina.net
* Open Unified communication - Asterisk, Kamailio, Sip-router projects