[asterisk-bugs] [JIRA] (ASTERISK-22593) when fxs(fxs is callee) is ring, dialing is set to 1, and so frametype = AST_FRAME_NULL in chan_dahdi.c/dahdi_read() , so will not invoke ast_dsp_busydetect()

[Rusty Newton (JIRA)]

Rusty Newton created ASTERISK-22593:
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             Summary: when fxs(fxs is callee) is ring, dialing is set to 1,and so frametype = AST_FRAME_NULL in chan_dahdi.c/dahdi_read() , so will not invoke ast_dsp_busydetect() 
                 Key: ASTERISK-22593
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22593
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
    Affects Versions: 1.8.22.0
         Environment: ubuntu 12.04
            Reporter: wangpeng


dialplan is :
[from-pstn]
exten => s,1,Answer()
	same => n,Background(welcome)
	same => n,WaitExten(100)

exten => 8003,1,Dial(${FXSPORT_3})
	same => n,Goto(S_${DIALSTATUS},1)


in chan_dahdi.conf is:
busydetect=yes
busycount=3
busypattern=350,350

first:
an incoming call(will via fxo port),and when run WaitExten(100),outbound call hungup, but see log(by asterisk -rvvvv) "Perform busy detection etc on the dahdi line", fxo port not hungup.

second:
i modify  WaitExten(100) to  WaitExten(10).
an incoming call(will via fxo port and then dial exten of asterisk),and dial 8003,will run Dial(${FXSPORT_3}), outbound call hungup, but exten 8003 is still ring.
i found p->dialing is 1 when fxs(8003) is ring,this will led to "frametype = AST_FRAME_NULL" in chan_dahdi.c/dahdi_read() , so will not invoke ast_dsp_busydetect() (ref ast_dsp_process,and fxo will invoke ast_dsp_busydetect,but not return 1).

fxs is callee,why set dialing to 1??is this led to busydetect not work?? how to resolve it??


thanks 


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