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List:       sip-implementors
Subject:    Re: [Sip-implementors] empty rtp stream
From:       David Benoit <benoit () starscale ! com>
Date:       2009-09-09 10:18:19
Message-ID: 20090909101819.GA29787 () starscale ! com
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Peter,

May I suggest looking at the different "hold" examples here:

  http://www.tech-invite.com/Ti-sip-service-1.html

These are nice annotated examples of those in RFC 5359.

The decision as to whether or not to send RTP lies with the sender of the RTP.
There is nothing that requires RTP to be sent between two endpoints (at any
time) if the session is active.  There are practical reasons for doing so (for
example, keeping firewall holes open, etc.), but nothing that requires it.


David

On Wed, Sep 09, 2009 at 02:52:25PM +0530, Vivek Batra wrote:
> Ofcourse not an empty rtp stream. If your IPPBX is having B2BUA, I will
> suggest to play Music on Hold (MoH) in RTP packets to the SIP provider.
> 
>  
> 
> Best Regards,
> 
> Vivek Batra
> 
>  
> 
> -----Original Message-----
> From: sip-implementors-bounces@lists.cs.columbia.edu
> [mailto:sip-implementors-bounces@lists.cs.columbia.edu] On Behalf Of Peter
> Nijhuis
> Sent: Wednesday, September 09, 2009 12:52 PM
> To: sip-implementors@lists.cs.columbia.edu
> Subject: [Sip-implementors] empty rtp stream
> 
>  
> 
> If an IPPBX puts a SIP call on hold, should it keep on sending empty rtp
> 
> stream to the SIP Provider. Or should the RTP stream stop?
> 
>  
> 
>  
> 
> Best regards,
> 
>  
> 
> Peter Nijhuis
> 
>  
> 
>  
> 
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