Merged revisions 57364 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r57364 | russell | 2007-03-01 17:42:53 -0600 (Thu, 01 Mar 2007) | 16 lines

Merge changes from svn/asterisk/team/russell/sla_updates

* Originally, I put in the documentation that only Zap interfaces would be
  supported on the trunk side.  However, after a discussion with Qwell, we came
  up with a way to make IP trunks work as well, using some things already in
  Asterisk.  So, here it is, this now officially supports IP trunks.
* Update the SLA documentation to reflect how to setup IP trunks.
* Add a section in sla.txt that describes how to set up an SLA system with
  voicemail.
* Simplify the way DTMF passthrough is handled in MeetMe.
* Fix a bug that exposed itself when using a Local channel on the trunk side
  in SLA.  The station's channel needs to be passed to the dial API when
  dialing the trunk.
* Change a WARNING message to DEBUG in channel.h.  This message is of no use
  to users.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@57365 65c4cc65-6c06-0410-ace0-fbb531ad65f3