The ${REASON} variable is set by Asterisk when it enters the special Failed extension. It seems to give the only ways of finding out why a call file call failed. It takes at least these values:
0 – Failed (not busy or congested)
1 – Hung up
3 – Ring timeout
5 – Busy
8 – Congestion
July 26, 2017 January 18, 2016 November 10, 2005 April 28, 2008 December 27, 2005 December 14, 2004 September 13, 2005 January 6, 2005 March 3, 2005 October 19, 2004
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