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res_pjsip: Add option to force G.726 to be treated as AAL2 packed.

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Some phones send g.726 audio packed for AAL2, which differs from what is
recommended by RFC 3351. If Asterisk receives audio formatted as such when
negotiating g.726 then it sounds a bit distorted. Added an option to
res_pjsip_endpoint that allows g.726 negotiated audio to be treated as g.726
AAL2 packed.

ASTERISK-25158 #close
Reported by: Steve Pitts

Change-Id: Ie7e21f75493d7fe53e75e12c971e72f5afa33615
This commit is contained in:
Kevin Harwell
2015-06-12 16:58:27 -05:00
parent b8bc15286f
commit 93ac45d3bd
7 changed files with 64 additions and 6 deletions
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9
res/res_pjsip.c
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@@ -471,6 +471,15 @@
set to <literal>sdes</literal> or <literal>dtls</literal>.
</para></description>
</configOption>
<configOption name="g726_non_standard" default="no">
<synopsis>Force g.726 to use AAL2 packing order when negotiating g.726 audio</synopsis>
<description><para>
When set to "yes" and an endpoint negotiates g.726 audio then use g.726 for AAL2
packing order instead of what is recommended by RFC3551. Since this essentially
replaces the underlying 'g726' codec with 'g726aal2' then 'g726aal2' needs to be
specified in the endpoint's allowed codec list.
</para></description>
</configOption>
<configOption name="inband_progress" default="no">
<synopsis>Determines whether chan_pjsip will indicate ringing using inband
progress.</synopsis>