[Freeswitch-users] Codec negotiation with carriers

[Anto]

Hello

Attached file, with the traces of the different tests (with different
configurations).

http://pastebin.freeswitch.org/18599

I have read the url that you mentioned, the initial guide FreeSWITCH,
that of mod_sofia, applications, etc.. I believe that most of the wiki
(maybe when do not give the solution, read as much documentation is
worse idea :-S, lock me more).

I made ​​a configuration that works (I have not tested the audio), but
earlier (before I started "touch" the profiles) if I could talk to a
physical phone (several times). The problem is that I can not
understand why it works and sometimes not, and I would like to learn
:-). Not only do and forget, so I would like to learn and less
disturbing to the mail list and (maybe in the future) to help other
newbies like me :-). Thanks !

Best regards
Anto

2012/3/7 Michael Collins <msc at freeswitch.org>:
> You may want to read up on codec negotiation:
> http://wiki.freeswitch.org/wiki/Codec_negotiation
>
> There are different ways to handle codecs depending on your needs. I'd read
> that page first and then try out some of the suggestions. If you're still
> having trouble then I'd recommend getting SIP traces of the traffic and
> putting them on pastebin.freeswitch.org. The gang here is pretty good at
> looking over logs and helping with diagnosing problems. :)
>
> -MC
>
> On Tue, Mar 6, 2012 at 2:30 PM, Anto <potxoka at gmail.com> wrote:
>>
>> Hi
>>
>> I am following the steps in this direction
>> "http://wiki.freeswitch.org/wiki/SBC_Setup" and
>> "http://wiki.freeswitch.org/wiki/Provider_Configuration:_Broadvoice",
>> I reread the whole entire wiki (or so I lack), but do not quite
>> assimilate or finding the right formula to operate the bridge :-S.
>>
>> I captured traffic with ngrep, I enabled sip-trace, console logconsole
>> 8, etc., but unless the transcoding error (only two of the hundreds of
>> combinations of settings that I have), I have not seen anything
>> "weird" :-S
>>
>> I have 3 suppliers, each with this codec:
>>
>> 1)           2)              3)
>> G729        G729        G729
>> G711u      G711A      G711A
>> G711A     G711u       G711u
>>                G723         G723
>>                                  G722
>>                                  GSM
>>
>> I think I understand that when making an outside call, FreeSWITCH
>> follow these steps:
>>
>> USER -> (   Dialplan -> profile (internal) -> bridge (external) ->
>> profile (external)   ) -> PROVIDER
>>
>> PROVIDER -> (   Dialplan -> profile (external) -> bridge (internal) ->
>> profile (internal)  ) -> USER
>>
>> right?
>>
>> Internal and external I set as follows (and not many changes have
>> done, and not remember it, because I've been testing days). If
>> outbound (outbound-codec-prefs) all codecs specified system does not
>> handle the call, I have to specify these by hand. If active
>> inbound-proxy-media, not the caller. Some of the time I worked, but
>> gave me an error that it can do transcoding G729 codec (I do
>> passthrough), but the proxy does not work half.
>>
>> If the outbound property (outbound-codec-prefs) all codecs specified
>> system does not handle the call, I have to specify these by hand. If
>> active inbound-proxy-media, not the caller. Some of the time I worked,
>> but gave me an error that it can do transcoding G729 codec (I want to
>> make passthrough), but the "proxy media" does not work.
>>
>> Basically, what I do is that local users can use all the codecs
>> allowed (iLBC, GSM, ...) and make an outside call, use the carrier
>> that will indicate the priority but the free codec.
>>
>> With this configuration works for me, but I would like to understand
>> why so if it works and otherwise no. Coming to understand how to
>> configure properly and so as not to disturb the mail list ;-). Thanks
>> !
>>
>> Best regards
>> Anto
>>
>> vars.xml
>>
>> <X-PRE-PROCESS cmd="set"
>>
>> data="global_codec_prefs=iLBC,G7221,speex,PCMU,PCMA,BV16,G726-32,GSM,G729,G723,AMR"/>
>> <X-PRE-PROCESS cmd="set"
>>
>> data="carriers_codec_prefs=PCMU,PCMA,G729,G723,AMR,iLBC,G7221,speex,BV16,G726-32,GSM"/>
>>
>> internal.xml
>>
>> <param name="codec-prefs" value="$${global_codec_prefs}"/>
>> <!--param name="inbound-codec-prefs" value="$${global_codec_prefs}"/>
>> <param name="outbound-codec-prefs" value="$${global_codec_prefs}"/-->
>> <!--param name="inbound-codec-negotiation" value="generous"/-->
>> <param name="inbound-codec-negotiation" value="greedy"/>
>> <param name="inbound-late-negotiation" value="true"/>
>> <param name="renegotiate-codec-on-reinvite" value="true"/>
>> <!--param name="inbound-proxy-media" value="true"/-->
>>
>> external.xml
>>
>> <param name="codec-prefs" value="$${carriers_codec_prefs}"/>
>> <param name="inbound-codec-prefs" value="$${carriers_codec_prefs}"/>
>> <!--param name="outbound-codec-prefs" value="$${carriers_codec_prefs}"/-->
>> <param name="outbound-codec-prefs" value="PCMU,PCMA,G729,G723"/>
>> <!--param name="inbound-codec-negotiation" value="generous"/-->
>> <param name="inbound-codec-negotiation" value="greedy"/>
>> <param name="inbound-late-negotiation" value="true"/>
>> <param name="renegotiate-codec-on-reinvite" value="true"/>
>> <!--param name="inbound-proxy-media" value="true"/-->
>>
>> dialplan/outbound.xml
>>
>> <include>
>>        <context name="internal">
>>                <extension name="outbound">
>>                  <condition field="destination_number"
>> expression="^(\d+)$">
>>                        <!--action application="set"
>> data="inherit_codec=true"/-->
>>                        <!--action application="set"
>> data="hangup_after_bridge=true"/-->
>>                        <!--action application="set"
>> data="proxy_media=true"/-->
>>                        <action application="bridge"
>> data="sofia/gateway/provider-2/$1"/>
>>                  </condition>
>>                </extension>
>>        </context>
>>
>> _________________________________________________________________________
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>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
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>
>
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
> 
> 
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