[asterisk-bugs] [JIRA] (ASTERISK-22279) 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)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-22279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rusty Newton updated ASTERISK-22279:
------------------------------------

    Status: Open  (was: Triage)
    
> 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-22279
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22279
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>    Affects Versions: 1.8.22.0
>         Environment: ubuntu 12.04
>            Reporter: wangpeng
>            Assignee: Rusty Newton
>         Attachments: issue_busydetectnotwork_full_log_first, issue_busydetectnotwork_full_log_second
>
>
> 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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