[SIPForum-discussion] Silence suppression attribute based on rfc3108

[Manpreet Singh]

Anuradha
 
Thanks for the URL. Although it does say default is ON, its not writen
in any spec. Is there a reference to spec you can point me to? Alteast
3108 doesnt talk about this and I am not sure where they are taking that
reference.
 
thnx

________________________________

From: anuradha.kumar1 at wipro.com [mailto:anuradha.kumar1 at wipro.com] 
Sent: Tuesday, June 30, 2009 11:54 PM
To: Manpreet Singh; discussion at sipforum.org
Subject: RE: [SIPForum-discussion] Silence suppression attribute based
on rfc3108



Hello Manpreet,

 

I had a chance to look at this. VAD or silence suppression is used to
save bandwidth in a case where the originating and terminating parties
do not speak but still the background voice gets played which is
unnecessary. 

 

Now coming to your question whenever not indicated silence suppression
or Voice Activity Detection is set to ON. I guess we can verify this as
well by monitoring it by network analyzers like wire shark. Please refer
to the URL
https://lists.cs.columbia.edu/pipermail/sip-implementors/2006-January/01
1717.html

 

Regards,

Anu  

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Manpreet Singh
Sent: Tuesday, June 30, 2009 9:06 PM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Silence suppression attribute based on
rfc3108

 

Hi

 

If the silence suppression attribute is not present in SDP, whats the
default behaviour? Would the absence mean ON or OFF for a certain media
type?

 

thnx

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