Merged revisions 281358 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.8

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  r281358 | mnicholson | 2010-08-09 09:49:38 -0500 (Mon, 09 Aug 2010) | 4 lines
  
  Validate minrate, maxrate, and modem settings before attempting a fax session.
  
  FAX-224
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@281359 65c4cc65-6c06-0410-ace0-fbb531ad65f3