[Freeswitch-users] Blog post about SIP

Chris Mylonas chris at opencsta.org
Fri Jun 15 05:05:06 MSD 2012

Hi Kristian,

A similar thing happened on the apache-tapestry mailing list to Igor [1]
He was writing a "Tapestry 5 In Action" book for Manning Publications and after the initial MEAP (early access program for enthusiastic readers!) it got cut because of the lack of numbers.

He didn't have any trouble from Manning to take his existing work and go down the self-publishing route with lulu [2] - he's a pretty busy but friendly fellow.


[1] http://blog.tapestry5.de/index.php/news/
[2] http://www.lulu.com/

On 15/06/2012, at 6:06 AM, Kristian Kielhofner wrote:

> FreeSWITCHers,
>  As some of you may have noticed I frequently comment on SIP-related
> FreeSWITCH posts.  Long story short I decided to finally put some of
> these thoughts and experiences down in writing.  What I ended up with
> is a 21 page (and counting) document describing various SIP header
> fields, SDP information, RTP issues, DTMF issues, NAT traversal
> technologies, interop headaches, etc.
>  I wrote a little intro and linked to the document if any of you
> would like to check it out (link at the end of post):
> http://blog.krisk.org/2012/06/everything-you-wish-you-didnt-need-to.html
>  Of course I'd appreciate any feedback you may have.  What do you
> disagree with?  Find a typo?  Have burning SIP/RTP/SDP/T.38/codec
> questions you'd like to see me address?  Should I get into more
> implementation (FreeSWITCH) specific issues?  Let me know.
> Thanks!
> -- 
> Kristian Kielhofner
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