[SIPForum-discussion] NAT pinhole refreshes

[Gunnar Hellstrom]

There is an IETF draft about the need to keep RTP streams alive.
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Title : Application Mechanism for maintaining alive the Network Address
Translator (NAT) mappings associated to RTP flows.

Author(s) : X. Marjou, A. Sollaud

Filename : draft-ietf-avt-app-rtp-keepalive-06.txt

Pages : 10

Date : 2009-06-23

This document lists the different mechanisms that enable applications using
Real-time Transport Protocol (RTP) to maintain their RTP Network Address
Translator (NAT) mappings alive. It also makes a recommendation for a
preferred mechanism. This document is not applicable to Interactive
Connectivity Establishment (ICE) agents.

A URL for this Internet-Draft is:

 
<http://www.ietf.org/internet-drafts/draft-ietf-avt-app-rtp-keepalive-06.txt
>
http://www.ietf.org/internet-drafts/draft-ietf-avt-app-rtp-keepalive-06.txt

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For SIP, I think you should look in RFC 3429 - STUN, and in the ICE draft.
 
Gunnar

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From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Vivek Batra
Sent: Tuesday, August 04, 2009 5:57 AM
To: 'Anthony Orlando'; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] NAT pinhole refreshes


Not always REGISTER is required to refresh the binding in the DSL modem.
You can also use other mechanism to refresh the NAT binding using NOTIFY,
OPTION etc. I don't think any specific standard exists for this!
 
Best Regards,
Vivek Batra

  _____  

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Anthony Orlando
Sent: Monday, August 03, 2009 7:34 PM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] NAT pinhole refreshes


Hello all,
  In our network our dsl modem pinhole timeout is 60 seconds.  Our phones
were re-registering at the half life which is of course 30 seconds do to a
setting in the phone.  There are some people who want to change that to 50
seconds which sounds reasonable to me but I would like to find a
recommendation somewhere like an RFC.  Does anyone know if such a standard
exists?

Anthony
	




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