[asterisk-users] One way audio...

[Vinícius Fontes]

Two things you could consider trying:

1) In sip.conf, set the externip and localnet parameters correctly.
2) Also in sip.conf, try the following on the PAP2's sections:

disallow=all
allow=alaw:10

In case that fails, try also

disallow=all
allow=alaw:20



Att
Vinícius Fontes
Desenvolvimento
Canall Tecnologia em Comunicações Ltda.

----- "Carlos Chavez" <cursor at telecomabmex.com> escreveu:

> I am still having a very frustrating problem win an Avaya-Asterisk
> system.  I have written about this before but I am expanding the
> description of the problem just in case someone can give me some
> insight.
> 
> 	This installation is an Asterisk 1.4.19.1 server connected to an
> Avaya
> PBX using a PRI E1.  Integration works great and we can dial from any
> extension to any extension on both sides.  The problem happens when
> we
> connect a Linksys PAP2T outside the network.  If I dial an extension
> on
> the Avaya from that PAP2T I get one way audio (I can hear them but
> they
> cannot hear me).  This only happens when I dial an extension on the
> Avaya.  If I dial to the voicemail extension I can get my messages. 
> I
> can speak to any SIP extension connected to the Asterisk server.
> 
> 	Here is the strangest part: If they dial the PAP2T from an Ayava
> extension everything works great, audio both ways.  In this
> installation
> there are 45 PAP2T and 45 SPA3102 external extensions.  All the
> SPA3102
> extensions do NOT have the problem the PAP2T does.  I always get two
> way
> audio with the SPA3102.  When I do an "rtp debug" I can see that
> incoming RTP packets stop the moment the Avaya extension picks up. 
> If
> the PAP2T is connected on the same internal network as the Asterisk
> then
> everything works, only when the PAP2T is outside the network do we
> get
> one way audio.
> 
> 	The only difference I can find between the configuration of the
> SPA3102
> and the PAP2T is a parameter called "Symmetric RTP" which is enabled
> on
> the SPA but does not exist on the PAP2T.  I do not know if this has
> anything to do with the problem but there is nothing else I can find.
> 
> 	Any recommendations on how to tackle this problem?  Right now the
> only
> solution I can see is to replace all PAP2T with SPA3102 but obviously
> I
> would like to avoid the expense.
> 
> -- 
> Telecomunicaciones Abiertas de México S.A. de C.V.
> Carlos Chávez Prats
> Director de Tecnología
> +52-55-91169161 ext 2001
> 
> 
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