[sr-dev] nathelper generates a keepalive request with branch=0

[Jan Janak]

On Thu, Apr 29, 2010 at 6:30 AM, Maxim Sobolev <sobomax at sippysoft.com> wrote:
> Klaus Darilion wrote:
>>>
>>> Why not to use a SIP/2.0 compliant branch (z9hG4bK...)? any reason?
>>
>> Maybe this is the method to detect keep-alive replies and absorb them
>> before they enter dialplan processing.
>
> I don't think it's intentional.

There was a thread discussing this a long time ago, see:

http://lists.iptel.org/pipermail/serusers/2005-April/018559.html

Hope that helps.

-Jan