Kevin P. Fleming wrote:
Andrew Kohlsmith wrote:
I'm not talking Dial()'s result (DIALSTATUS), I'm talking ANY
application. Every application returns a code, so how do we get at
it? $? ${?} ${APPRESULT}, how?
You can't, because there is no reason for it. There are only three
possibilities for applications that don't set a channel variable:
0 : signals normal completion, and the dialplan continues
'0' - '9' or 'A' - 'F' or '#' or '*' : signals normal completion and
jump to that extension
anything else : signals failure and the call is hung up
Applications generally only return zero or non-zero, so there is no
reason to be able to retrieve that result, because if it's non-zero the
call has already moved to the 'h' extension (if it is present). There is
no lack of documentation here, because application result codes have no
purpose or value being read or used by code in the dialplan.
It seems rather silly to document the return code of an app in "show
application blah" if you can never access the value. This was one of
the things that confused me when I was a newbie. I advocate simply
removing the return code information from the application help. Leave
it in the programming docs (where it might be important).
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