git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20963 65c4cc65-6c06-0410-ace0-fbb531ad65f3

don't transcode via SLINEAR when the option is enabled but there is a direct path from the source to the destination


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waiting for the rest of the patches... This is the dev branch, after all.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20931 65c4cc65-6c06-0410-ace0-fbb531ad65f3

- Send cause codes as well


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- Changing SIP call to support sending INVITEs as part of call transfers


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- Formatting change


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- Clean up initialization of initatial request initialization


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20816 65c4cc65-6c06-0410-ace0-fbb531ad65f3

  Please place a Doxygen todo marker before things that needs to be checked up later
  by someone - it's like /*! \todo We really need to implement this in C++ */

- option_debug checking before logging to DEBUG channel


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'error = 1' line put in by miustake



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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20653 65c4cc65-6c06-0410-ace0-fbb531ad65f3

for f == NULL



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20652 65c4cc65-6c06-0410-ace0-fbb531ad65f3

to reduce code differences.



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a condition in an 'if' statement to reduce the nesting depth.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20623 65c4cc65-6c06-0410-ace0-fbb531ad65f3

replacing some common blocks of code (there are still a few
instances where it can be used)



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20598 65c4cc65-6c06-0410-ace0-fbb531ad65f3

- replace nested 'if' with '&&'
- fix indentation
- annotate the end brace of some huge block
- remove useless parentheses



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function so the flow is easier to follow.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20569 65c4cc65-6c06-0410-ace0-fbb531ad65f3

(the previous version was mine, but this way it is definitely
more readable).



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- handle immediately failures in ast_request();
  This removes the need for checking 'chan' multiple times afterwards.
- handle immediately failures in ast_call(), by moving the one-line
  case at the top of the 'if' statement;
- use ast_strlen_zero in several places instead of expanding it inline;
- make outstate always a valid pointer;
On passing mark an unclear statement and replace a magic number
with sizeof(tmp).



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