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Normal Topic UDP continuation data (Read 2261 times)
Herg
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UDP continuation data
20. Feb 2008 at 13:34
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Hi there,

I'm using Phoner's SIP features....

I notice when using Phoner on a UDP connection it sends carriage return line feeds every few seconds, presumably to keep the connection to the server alive.

However, when using it with TCP it still seems to send some of this data on UDP. I was wondering what this is used for!

The scenario is that I have a proxy running TCP and UDP on one machine on port 5060 and Phoner running on another machine on port 5062.

When I initiate a call over TCP, everything works fine but I start to see a few UDP packets containing \r\n characters being sent from port 5064 to port 5060 on my proxy. It stops when the call is terminated.

Any ideas what this is for?

Thanks!
-Herg
  
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Re: UDP continuation data
Reply #1 - 20. Feb 2008 at 21:52
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This is done because of keeping NAT bindings open. If you send an INVITE the final Answer may take some time. There must to be some traffic on the media ports (RTP). If there is RTP traffic I might stop this CRLF sending.
  
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UDP continuation data
Reply #2 - 18. Oct 2008 at 09:59
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This Topic was moved here from Trollwiese [move by] Phoner Admin.
  
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