[asterisk-bugs] [JIRA] (ASTERISK-23589) HANGUPCAUSE can't get any information on a hungup inbound channel unless called with no arguments, plus unaffected by use_q850_reason

[Rusty Newton (JIRA)]

Rusty Newton created ASTERISK-23589:
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             Summary: HANGUPCAUSE can't get any information on a hungup inbound channel unless called with no arguments, plus unaffected by use_q850_reason
                 Key: ASTERISK-23589
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23589
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/General, Channels/General, Functions/func_hangupcause
    Affects Versions: SVN, 11.8.1
         Environment: Ubuntu 13.04; x86_64; Kernal 3.8.0-27-generic
            Reporter: Nick Adams
            Assignee: Rusty Newton
            Severity: Minor


My provider returns SIP 404 response for a Q.850 code of 3 ("No route to destination"). I want Asterisk to prioritise the Q.850 Reason code instead of using the SIP 404 when populating the HANGUPCAUSE variable as the Q.850 code gives me more detail and greater control in my dialplan.

I've set "use_q850_reason=yes" in sip.conf and Asterisk correctly identifies the Reason header:

{quote}
SIP/2.0 404 Not Found
Via: SIP/2.0/UDP 172.X.X.X:5060;branch=z9hG4bK728b99fd;rport=5060
Max-Forwards: 68
From: "Anonymous" <sip:anonymous at anonymous.invalid>;tag=as31832f10
To: <sip:614XXXXXXXX at 172.X.X.X:5060>;tag=Ztm3ZB2Xr0jgp
Call-ID: 59a1c91a4be33a1b2fc4a90f5c5e8224 at 172.X.X.X:5060
CSeq: 102 INVITE
User-Agent: FreeSWITCH-mod_sofia/1.2.10+git~20130624T144607Z~998ae35dbf
Accept: application/sdp
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, NOTIFY
Supported: timer, precondition, path, replaces
Allow-Events: talk, hold, conference, refer
Reason: Q.850;cause=3;text="NO_ROUTE_DESTINATION"
Content-Length: 0

<------------->
--- (14 headers 0 lines) ---
Using Reason header for cause code: 3
{quote}

I use the below dialplan to originate the call into:
{quote}
exten => s,1,Dial(SIP/MyProvider/614xxxxxxxx,30,g)
exten => s,n,NoOp(DEBUG1:HANGUPCAUSE=$\{HANGUPCAUSE\} DIALSTATUS=$\{DIALSTATUS\})
exten => s,n,Hangup

exten => t,1,Hangup

exten => h,1,NoOp(DEBUG2: HANGUPCAUSE=$\{HANGUPCAUSE\} DIALSTATUS=$\{DIALSTATUS\})
{quote}

Despite Asterisk correctly extracting the Reason code ("3"), the HANGUPCAUSE returns "1":

{quote}
Executing [614XXXXXX at CallSpooler:2] NoOp("Local/614XXXXXX at CallSpooler-00000001;2", "DEBUG1:  HANGUPCAUSE=1 DIALSTATUS=CHANUNAVAIL") in new stack
-- Executing [h at CallSpooler:1] NoOp("Local/614XXXXXX at CallSpooler-00000000;2", "DEBUG2: HANGUPCAUSE=1 DIALSTATUS=CHANUNAVAIL") in new stack
{quote}

The expectation is that the HANGUPCAUSE variable should be set to "3" however it seems to be set to "1". I'm not sure if there is a conflict between the HANGUPCAUSE of the Local channel as opposed to the SIP channel however the Q.850 reason seems to be clobbered.



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