[asterisk-users] parallel dial problem (used to work on Asterisk 13)

[Kingsley Tart]

Hi,

We have instances where we dial multiple destinations simultaneously
and then an answer 'macro' prompts the callee to press 1 to accept the
call or 3 to reject.

Previously if they pressed 3 (or just hung up) the other destinations
would continue to ring.

Now on Asterisk 18.13.0, the first person to answer and reject the call
causes Asterisk to stop ringing the other destinations, with PJSIP
sending a CANCEL with the following headers:

Reason: SIP;cause=200;text="Call completed elsewhere"
Reason: Q.850;cause=26


I've created a simplified test dialplan to illustrate the issue; calls
come in to the test context. Phone numbers and endpoints anonymised:


--8<------------------------------------------------------------------
[test]
exten => _X.,1,Dial(Local/12345678 at test_dodial&Local/87654321 at test_dodial,20,g)
same => n,NoOp(########## HANGUPCAUSE=${HANGUPCAUSE}, DIALSTATUS=${DIALSTATUS})


[test_dodial]
exten => _X.,1,NoOp(Dialling ${EXTEN})
same => n,Dial(PJSIP/provider/sip:${EXTEN}@endpoint:5060,,U(macro-testanswer^${EXTEN})g)
same => n,NoOp(ENDED ${EXTEN})


[macro-testanswer]
exten => s,1,NoOp(ANSWERING ${ARG1})
same => n,GotoIf($["${ARG1}"!="12345678"]?end_macro)
same => n,Set(MACRO_RESULT=CONGESTION)
same => n,Hangup(21)
same => n(end_macro),Return()
--8<------------------------------------------------------------------


Both numbers ring at once, but if 12345678 answers my test treats that
as the callee rejecting the call. What should happen is that 87654321
should continue to ring, but it doesn't.


What comes up in the Asterisk console is this:

--8<------------------------------------------------------------------
    -- PJSIP/provider-00000004 answered Local/12345678 at test_dodial-00000002;2
    -- PJSIP/provider-00000004 Internal Gosub(macro-testanswer,s,1(12345678)) start
    -- Executing [s at macro-testanswer:1] NoOp("PJSIP/provider-00000004", "ANSWERING 12345678") in new stack
    -- Executing [s at macro-testanswer:2] GotoIf("PJSIP/provider-00000004", "0?end_macro") in new stack
    -- Executing [s at macro-testanswer:3] Set("PJSIP/provider-00000004", "MACRO_RESULT=CONGESTION") in new stack
    -- Executing [s at macro-testanswer:4] Hangup("PJSIP/provider-00000004", "21") in new stack
  == Spawn extension (macro-testanswer, s, 4) exited non-zero on 'PJSIP/provider-00000004'
[Jul 28 14:30:38] NOTICE[31819][C-00000002]: app_stack.c:1079 gosub_run: PJSIP/provider-00000004 Abnormal 'Gosub(macro-testanswer,s,1(12345678))' exit.  Popping routine return locations.
    -- Local/12345678 at test_dodial-00000002;1 answered PJSIP/squiresvi-00000003
    -- Channel PJSIP/provider-00000004 joined 'simple_bridge' basic-bridge <8db6d4f7-dac2-4f6e-840a-eaa557f1769a>
    -- Channel PJSIP/provider-00000004 left 'simple_bridge' basic-bridge <8db6d4f7-dac2-4f6e-840a-eaa557f1769a>
  == Spawn extension (test_dodial, 447919554754, 2) exited non-zero on 'Local/447919554754 at test_dodial-00000003;2'
    -- Executing [12345678 at test_dodial:3] NoOp("Local/12345678 at test_dodial-00000002;2", "ENDED 12345678") in new stack
    -- Auto fallthrough, channel 'Local/12345678 at test_dodial-00000002;2' status is 'ANSWER'
    -- Channel Local/12345678 at test_dodial-00000002;1 joined 'simple_bridge' basic-bridge <4e7cdff8-3fc6-412e-b11f-ffd95ca75960>
    -- Channel Local/12345678 at test_dodial-00000002;1 left 'simple_bridge' basic-bridge <4e7cdff8-3fc6-412e-b11f-ffd95ca75960>
    -- Executing [01476292508 at test:2] NoOp("PJSIP/squiresvi-00000003", "########## HANGUPCAUSE=21, DIALSTATUS=ANSWER") in new stack
    -- Auto fallthrough, channel 'PJSIP/squiresvi-00000003' status is 'ANSWER'
--8<------------------------------------------------------------------


I also note that the NoOp at the end of [test_dodial] doesn't get
executed.

Any idea how I can fix this?

Cheers,
Kingsley.