Merged revisions 85571 via svnmerge from

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

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r85571 | file | 2007-10-15 13:39:59 -0300 (Mon, 15 Oct 2007) | 4 lines

Document that DTMF based features only work when two channels are bridged together.
(closes issue #10773)
Reported by: pbayley

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@85578 65c4cc65-6c06-0410-ace0-fbb531ad65f3