[Sip] Draft: draft-holmberg-sip-keep-00.txt

["Christer Holmberg" <christer.holmberg at ericsson.com>]

Hi,
 
Based on discussions we've had in SIP, I have (with some good input from a number of people) put together a draft which defines a mechanism to indicate support of, and use, the keep-alive techniques defined in draft-outbound, without using the Outbound mechanism itself.
 
One use-case, which is also what we mostly have discussed, is simply when entities do not support the Outbound mechanism but still want to implement and use keep-alive.
 
Another use-case is non-registration calls (for example non-registration emergency calls) where Outbound can't be used.
 
The draft can be found at:
 
http://users.piuha.net/cholmber/drafts/draft-holmberg-sip-keep-00.txt
 
Regards,
 
Christer
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