[asterisk-bugs] [Asterisk 0017089]: Background behaves strangely[t when priority 1 is not available in current extension.

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17089 
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Reported By:                whardier
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17089
Category:                   Core/PBX
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.6.2.6 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-03-23 22:20 CDT
Last Modified:              2010-03-24 14:11 CDT
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Summary:                    Background behaves strangely[t when priority 1 is
not available in current extension.
Description: 
Apparently whatever extension lookup method is being used by BackGround
fails when the extension calling BackGround does not have priority 1 in the
current context.  I discovered this when including an IVR menu into another
context using a 50000 offset to extension 's' and a named priority.  See
additional information for a quick sample.

In the example below, if a caller is sent to Goto(tree-dish-AK-ANC,s,1)
the extension detection fails with:

[Mar 23 19:17:41]     -- Sent into invalid extension 's' in context
'tree-dish-common' on SIP/0011-Sales-0000001c
[Mar 23 19:17:41]     -- Executing [i at tree-dish-common:1]
Gosub("SIP/0011-Sales-0000001c", "s,common") in new stack

If I attempt to dial a 4 digit extension starting with 0 when a '0'
extension exists.  Something is 'wonky' if I can get technical with you
all.

Previously [tree-dish-AK-ANC] included [tree-dish-common] and simply went
to the named priority at priority 50000 via a local Goto which may have
worked.. untested.  

I can see how some users may want to jump into a named priority in another
context and use DTMF detection of some kind.  If the extension does not
have priority 1 this will fail.
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 (0119851) whardier (reporter) - 2010-03-24 14:11
 https://issues.asterisk.org/view.php?id=17089#c119851 
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There are no errors because that is ligitimate dialplan.  Similar to how
[stdExten] works off of priority 50000.

Here's another scenario that might explain the whys involved with handling
dialplan this way (similarly to how stdExten works)

[test-inbound]
exten => 1,1,Goto(test-menu-anchorage,s,1) ; Go through the anchorage
context first and do something
exten => 2,1,Goto(test-menu-anchorage,s,1)
exten => 3,1,Goto(test-menu-wasilla,s,1) ; Go through wasilla context
first and do something
exten => 4,1,Goto(test-menu,s,start) ; Go directly because I want too for
some reason

[test-menu]

exten => s,50000(start),NoOp(test1) ; Offset this so that we can be
included
exten => s,n,Background(silence/10)
exten => s,n,Hangup()

exten => _00xx,1,NoOp(Entered ${EXTEN})

exten => 0,1,NoOp(Entered ${EXTEN})
exten => 1,1,NoOp(Entered ${EXTEN})
exten => 2,1,NoOp(Entered ${EXTEN})
exten => 3,1,NoOp(Entered ${EXTEN})
exten => 4,1,NoOp(Entered ${EXTEN})
exten => 5,1,NoOp(Entered ${EXTEN})

[test-menu-anchorage]
include => test-menu
exten => s,1,NoOp(Do something here)
exten => s,n,Goto(start)

exten => 3474,1,NoOp(Do stuff)

[test-menu-wasilla]
include => test-menu
exten => s,1,NoOp(Do something else here)
exten => s,n,Goto(start)

exten => 5787,1,NoOp(Do stuff) 

Issue History 
Date Modified    Username       Field                    Change               
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2010-03-24 14:11 whardier       Note Added: 0119851                          
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