- Fix different issues with call transfer cancel. In case 3rd party busy or congestion call was not returned.
 - Fix displaying soft button 'Redial' in case of no redial number exists
........

Merged revisions 396377 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@396378 f38db490-d61c-443f-a65b-d21fe96a405b
Prevent unreal channels from optimizing during DTMF emulation

This prevents unreal channel optimization during the prequalification
phase when either channel is involved in DTMF emulation. This prevents
a situation where an emulated digit would be missed because the
emulation was never completed.

Review: https://reviewboard.asterisk.org/r/2747/
(closes issue ASTERISK-22214)


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@396385 f38db490-d61c-443f-a65b-d21fe96a405b