[Freeswitch-users] inherit_codec failing with pre-media

[sangdrax8]

Yes, I did make sure that was activated in the profile.  the
configuration that comes from the git repo has that turned on, and I
am using the demo config directly from git.

The demo dial plan doesn't include the inherit_codec=true line, so I
did add that.  It logs that it is set to true, but freeswitch ends up
transcoding.  If I remove the ringback, suddenly everything works as
expected.  I just can't have a phone system with no ringing for the
calling party.  Still it does indicate that inbound late negotiation
and the inherit_codec are capable of doing the right thing.  Just when
a ring back is added, it seems to fail to work.

If I am configuring this correctly (only 1 change from the demo
configuration provided) should I open a bug somewhere, or e-mail a dev
list?  I didn't want to do either of these without someone confirming
that my configuration part is correct and that it is a bug.

"Faithless is he, who says 'farewell', when the path darkens."
"you just keep on trying till you run out of cake"


On Wed, Sep 18, 2013 at 7:31 PM, Steven Ayre <steveayre at gmail.com> wrote:
> Inherit_codec requires late negotiation - is that enabled too? Otherwise the
> aleg codec has already been picked before hitting the dialplan.
>
>
> On Wednesday, September 18, 2013, sangdrax8 wrote:
>>
>> Did I explain a bit to much detail for the users list?
>>
>> Does anyone use "inherit_codec=true" and have it working?
>>
>>
>> On Tue, Sep 17, 2013 at 2:27 PM, sangdrax8 <sangdrax8 at gmail.com> wrote:
>> > I pulled the latest freeswitch from git this morning, and am still
>> > having issues using inherit_codec=true.  It seems the only way I can
>> > get it to defer to the choice of the b-leg call is to remove the
>> > ringback, and thus the need for early media.
>> >
>> > My setup has 2 phones with the following codecs configured:
>> >
>> > phone1000:  g722, ulaw
>> > phone1001:  ulaw
>> >
>> > My goal is to have a call initiated by phone1000 (a-leg) to defer the
>> > codec choice until phone1001 (b-leg) chooses one.  This would allow
>> > them to talk with no transcoding required by freeswitch.  With the
>> > following dial plan, this fails to work.
>> >
>> > <extension name="Local_Extension">
>> >       <condition field="destination_number"
>> > expression="^(10[01][0-9])$">
>> >         <action application="export" data="dialed_extension=$1"/>
>> >         <action application="set" data="ringback=${us-ring}"/>
>> >         <action application="set"
>> > data="transfer_ringback=$${hold_music}"/>
>> >         <action application="set" data="call_timeout=30"/>
>> >         <action application="set" data="hangup_after_bridge=true"/>
>> >         <action application="set" data="inherit_codec=true" />
>> >         <action application="bridge"
>> > data="user/${dialed_extension}@${domain_name}"/>
>> >       </condition>
>> > </extension>
>> >
>> > It does log that it is going to defer:
>> >
>> > 2013-09-17 13:15:10.956535 [DEBUG] mod_sofia.c:4542 [zrtp_passthru]
>> > Setting a-leg inherit_codec=true
>> > 2013-09-17 13:15:10.956535 [DEBUG] mod_sofia.c:4545 [zrtp_passthru]
>> > Setting b-leg
>> > absolute_codec_string='G722 at 8000h@20i at 64000b,PCMU at 8000h@20i at 64000b'
>> >
>> >
>> > then it tries to provide the ringback for the a-leg, and it negotiates
>> > to g722 since freeswitch supports that and it is the first match.
>> > Later when the b-leg is answered, it also negotiates, this time to
>> > ulaw as that is all b supports.  My call completes, but freeswitch has
>> > to transcode between the two.
>> >
>> > In an attempt to see inherit_codec work, I then commented out the
>> > ringback line from the above dialplan.  With only this one change,
>> > freeswitch now waits until the b-leg negotiation, and passes that back
>> > to the a-leg.  The call completes and both handsets are using ulaw and
>> > no transcoding is required.  The problem being that the calling party
>> > never gets a ring while waiting.
>> >
>> > I can't imagine that the only way to use inherit_codec=true is with
>> > all ringing turned off.  Can someone tell me if there is an additional
>> > option I am missing?  All documentation I read seems to indicate that
>> > just adding "inherit_codec=true" will fix things, but even the
>> > default.xml provided as an example uses ringback and therefore fails.
>>
>> _________________________________________________________________________
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>> http://www.freeswitchsolutions.com
>>
>> 
>> 
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>
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
> 
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