[Freeswitch-users] No audio when calling in via SIP phone

Ben Langfeld ben at langfeld.co.uk
Tue Jul 29 16:54:41 MSD 2014


Try explicitly answering the call before your <Speak/> action.


On 29 July 2014 07:04, Iqbal Abdullah <iqbal.b.abdullah at gmail.com> wrote:

> Hello everyone,
>
> I have just gotten to know about FreeSWITCH and have tried installing
> it on a EC2 instance and in the process of trying out some examples. I
> am facing this issue of not being able to hear any sounds during a
> call I make to my FreeSWITCH system.
>
> My freeswitch system is the latest stable ver.1.4 and I followed the
> instructions to install from
> http://clintberry.com/2011/getting-started-with-plivo/
>
> via the installation script show on the site. I changed the
> installation script to use Slash and also 1.4 instead.
>
> One of the exercises is to pass an incoming call to plivo and make
> plivo return a <say> action, which for some reason is not reading back
> the text to me (no audio) when I call 1005 from using sflphone on my
> ubuntu.
>
> This is the log on freeswitch:
>
> 2014-07-29 18:01:12.581530 [NOTICE] switch_channel.c:1054 New Channel
> sofia/internal/1000 at xxxxxxxxxx.amazonaws.com
> [5650b3dd-1519-4c6f-b720-d4d3a8a65c5c]
> 2014-07-29 18:01:12.681534 [INFO] mod_dialplan_xml.c:558 Processing
> 1000 <1000>->1005 in context default
> 2014-07-29 18:01:12.681534 [WARNING] switch_core_session.c:1554
> sofia/internal/1000 at xxxxxxxxxx.amazonaws.com using scheduler due to
> bypass media or media is not established.
> 2014-07-29 18:01:12.733800 [NOTICE] sofia_media.c:92 Pre-Answer
> sofia/internal/1000 at xxxxxxxxxx.amazonaws.com!
> 2014-07-29 18:01:12.733800 [NOTICE] mod_dptools.c:1258 Channel
> [sofia/internal/1000 at xxxxxxxxxx.amazonaws.com] has been answered
> 2014-07-29 18:01:14.121516 [NOTICE] mod_dptools.c:1232 Hangup
> sofia/internal/1000 at xxxxxxxxxx.amazonaws.com [CS_RESET]
> [NORMAL_CLEARING]
> 2014-07-29 18:01:14.141502 [NOTICE] switch_core_session.c:1632 Session
> 1 (sofia/internal/1000 at xxxxxxxxxx.amazonaws.com) Ended
> 2014-07-29 18:01:14.141502 [NOTICE] switch_core_session.c:1636 Close
> Channel sofia/internal/1000 at xxxxxxxxxx.amazonaws.com [CS_DESTROY]
>
> I can see that plivo is correctly calling the XML I have placed, as
> this is the log I see on my web server:
>
> [29/Jul/2014 01:59:13] "GET
>
> /answer/?To=1005&Direction=inbound&From=1000&CallerName=1000&CallUUID=b74c06be-f4e9-4830-af68-e424b3b31e1c&CallStatus=ringing
> HTTP/1.1" 200 93
> [29/Jul/2014 01:59:14] "GET
>
> /answer/?To=1005&Direction=inbound&From=1000&CallUUID=b74c06be-f4e9-4830-af68-e424b3b31e1c&HangupCause=NORMAL_CLEARING&CallStatus=completed
> HTTP/1.1" 200 93
>
> This is the XML I have prepared to test plivo:
>
> <?xml version="1.0" encoding="UTF-8" ?>
> <Response>
>   <Speak>Hello World</Speak>
> </Response>
>
>
> And this is default.xml on freeswitch which forward any calls to 1005 to
> plivo:
>
> <include>
>   <context name="default">
>
>     <!--
>      This extension allows calling any digits of number
>      freeswitch will call plivo outbound server on every incoming call
>     -->
>     <extension name="plivo">
>         <condition field="destination_number" expression="^1005">
>             <action application="enable_heartbeat" data="60"/>
>             <action application="socket" data="127.0.0.1:8084 async
> full"/>
>         </condition>
>     </extension>
> ....
> ....
> </include>
>
> I have read that NAT issues might be causing a no-audio issue, but I
> am not sure and do not know how to tell if this is the issue. The only
> thing which look strange is the logs on freeswitch saying:
>
> 2014-07-29 18:01:12.681534 [WARNING] switch_core_session.c:1554
> sofia/internal/1000 at xxxxxxxxxx.amazonaws.com using scheduler due to
> bypass media or media is not established.
>
> but what does that mean?
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>
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