[asterisk-users] Early Media Issue

Floimair Florian f.floimair at commend.com
Mon Jun 17 04:11:00 CDT 2019


Just a guess, but I suspect that this might be related with strictrtp setting in rtp.conf, which learns the correct source in doing so drops a few packets.
I would try to disable strictrtp for testing purposes and if this works add some delay before playing back the media.



With best regards

Florian Floimair
Innovation - Software-Development

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Von: asterisk-users <asterisk-users-bounces at lists.digium.com> im Auftrag von Mark Farmer <farmorg at gmail.com>
Antworten an: Asterisk Users Mailing List - Non-Commercial Discussion <asterisk-users at lists.digium.com>
Datum: Freitag, 14. Juni 2019 um 15:15
An: Asterisk Users Mailing List - Non-Commercial Discussion <asterisk-users at lists.digium.com>
Betreff: [asterisk-users] Early Media Issue

Hi all

I've got an issue where when I call a number that just plays early media back to me.
Instead of hearing the full sequence of tones I hear a short ringing then part of the sequence. What seems odd is that I can see the telephone-event/8000 being passed up the chain but when it gets to Asterisk, it is never sent back to the phone. Instead I just see the usual RTP flows.

I've been trying to fix this for hours, does anyone have any ideas how to get this working correctly?

Asterisk version is 13.25.0

The settings I think are relevant (I'm using chan_sip):

(sip.conf)
ignoresdpversion=yes
internal_timing=yes
progressinband=never
silencesuppression=no
prematuremedia=no

(Per peer)
progressinband=yes
directrtpsetup=no
dtmfmode=rfc2833
directmedia=no
silencesuppression=no
prematuremedia=no


TIA
Mark.

--
Mark Farmer
farmorg at gmail.com<mailto:farmorg at gmail.com>
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