[asterisk-dev] [Code Review] Adjust formats of chan_local when channel we proxying changes

mjordan reviewboard at asterisk.org
Mon Jul 25 08:16:41 CDT 2011


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/trunk/channels/chan_local.c
<https://reviewboard.asterisk.org/r/1137/#comment7763>

    Just looking at the previous condition in the if block, but do you also need to check for a valid frame / frametype in your else if (!isoutbound) condition?


- mjordan


On July 24, 2011, 6:56 a.m., irroot wrote:
> 
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> https://reviewboard.asterisk.org/r/1137/
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> (Updated July 24, 2011, 6:56 a.m.)
> 
> 
> Review request for Asterisk Developers.
> 
> 
> Summary
> -------
> 
> This is a most annoying pain and tripped me up no end testing the T38 gateway patch for res_fax.
> 
> Scenario :-
> 
> i have a Linksys 2102 on a fax machine that uses G.729 and switches to ALAW on CNG and then negotiates T.38
> this is awesome as i can now Chat/Fax from same terminal using most effective bandwidth [these are to be deployed
> on sugar cane farms surrounding the kruger park here in south africa over wi-fi]
> 
> for testing purposes im using a local channel into T.30 fax app in res_fax.
> 
> Problem :-
> 
> when the device reinvites ALAW then T.38 it leaves the nativeformat on chan_local as G.729 this will not work
> as it is transcoding the FAX from G.729 to SLIN this will not work and took me a while to spot the problem.
> 
> Soloution :-
> 
> Check the format on the proxy and adjust it if it changes this should be what Local does been a proxy of the channel
> it should follow changes ...
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> 
> Diffs
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>   /trunk/channels/chan_local.c 329388 
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> Diff: https://reviewboard.asterisk.org/r/1137/diff
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> 
> Testing
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> 
> Thanks,
> 
> irroot
> 
>

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