[Freeswitch-users] Gaps In RTP (wideband) Packets From mod_voicemail

[Jerry Richards]

I'm setting send_silence_when_idle globally to a numerical value that fixes a loud white noise issue during sleeps.  I originally had it set to true but still had the wideband clipping issue.

Jerry

-----Original Message-----
From: freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Anthony Minessale
Sent: Thursday, May 10, 2012 8:40 AM
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users] Gaps In RTP (wideband) Packets From mod_voicemail

set send_silence_when_idle=true globally or per-leg

On Thu, May 10, 2012 at 10:35 AM, Jerry Richards <jerry.richards at teotech.com> wrote:
> By the way, in contrast, I created an XML block that plays the same 
> messages as mod_voicemail (see block below).  When this XML block is 
> executed, there is no clipping of words when using wideband codec 
> BV32.  This is why I'm thinking it's related to delays caused by mod_voicemail processing.
>
>
>
>     <extension name="test_message">
>
>       <condition field="destination_number" expression="^\*105$">
>
>         <action application="answer"/>
>
>        <action application="sleep" data="1000"/>
>
>               <action application="playback"
> data="/opt/teoswitch/sounds/en/us/callie/voicemail/vm-hello.wav"/>
>
>         <action application="playback"
> data="/opt/teoswitch/sounds/en/us/callie/voicemail/vm-you_have.wav"/>
>
>               <action application="say" data="en number pronounced 
> 1"/>
>
>         <action application="playback"
> data="/opt/teoswitch/sounds/en/us/callie/voicemail/vm-new.wav"/>
>
>         <action application="playback"
> data="/opt/teoswitch/sounds/en/us/callie/voicemail/vm-messages.wav"/>
>
>         <action application="playback"
> data="/opt/teoswitch/sounds/en/us/callie/voicemail/vm-you_have.wav"/>
>
>               <action application="say" data="en number pronounced 
> 2"/>
>
>         <action application="playback"
> data="/opt/teoswitch/sounds/en/us/callie/voicemail/vm-saved.wav"/>
>
>         <action application="playback"
> data="/opt/teoswitch/sounds/en/us/callie/voicemail/vm-messages.wav"/>
>
>         <action application="playback"
> data="/opt/teoswitch/sounds/en/us/callie/voicemail/vm-listen_new.wav"/
> >
>
>         <action application="playback"
> data="/opt/teoswitch/sounds/en/us/callie/voicemail/vm-press.wav"/>
>
>               <action application="say" data="en number pronounced 
> 1"/>
>
>         <action application="sleep" data="100"/>
>
>       </condition>
>
>     </extension>
>
>
>
> Thanks,
>
> Jerry
>
>
>
> From: freeswitch-users-bounces at lists.freeswitch.org
> [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of 
> Jerry Richards
> Sent: Thursday, May 10, 2012 8:23 AM
> To: FreeSWITCH Users Help
> Subject: [Freeswitch-users] Gaps In RTP (wideband) Packets From 
> mod_voicemail
>
>
>
> Hello,
>
>
>
> I'm seeing a audio problem when listening to the operator when calling 
> into voicemail to listen to messages and a wideband codec is used.  
> Looking at a wireshark trace, I see gaps between transmitted RTP 
> packets that exceed the jitter buffer depth in the endpoint softphone, 
> causing underflow.   This causes clipping of the front-end of words 
> such as "Pressed" sounds like 'ess' and "Last name" sounds like 'ast 
> name'.  While this is generally not noticeable with the G.711 codec, 
> it causes these clipped audio phrases with wideband codecs, such as 
> BV32.  It might be due to the processing delay in mod_voicemail between phrases?
>
>
>
> Has anyone seen this?  Is there a tag to help improve this?
>
>
>
> Thanks,
>
> Jerry
>
>
>
>
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--
Anthony Minessale II

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