[joinup]

exten => joinup,1,NoOp(${TESTVARIABLE})
exten => joinup,n,MeetMe(1234|oq)
exten => joinup,n,Hangup()

exten => h,1,NoOp()

[dialout]

exten => dialout,1,Set(__TESTVARIABLE=TEST)
exten => dialout,n,Dial(Zap/G3/07803034440,50,g)
exten => dialout.,n,Hangup()

exten => h,1,NoOp()

-----------------------------------------------------------------
Action: Originate
Priority: 1
Channel: Local/dialout@dialout/n
Context: joinup
Exten: joinup
-----------------------------------------------------------------

    -- Executing [dialout@dialout:1] Set("Local/dialout@dialout-aecf,2", "__TESTVARIABLE=TEST") in new stack
    -- Executing [dialout@dialout:2] Dial("Local/dialout@dialout-aecf,2", "Zap/G3/07803034440|50|g") in new stack
    -- Requested transfer capability: 0x00 - SPEECH
    -- Called G3/07803034440
    -- Zap/10-1 is proceeding passing it to Local/dialout@dialout-aecf,2
    -- Zap/10-1 is ringing
    -- Zap/10-1 answered Local/dialout@dialout-aecf,2
       > Channel Local/dialout@dialout-aecf,1 was answered.

    -- Executing [joinup@joinup:1] NoOp("Local/dialout@dialout-aecf,1", "") in new stack
    -- Executing [joinup@joinup:2] MeetMe("Local/dialout@dialout-aecf,1", "1234|oq") in new stack
    -- Stopped music on hold on SIP/5706-b7a01388
    -- Channel 0/10, span 1 got hangup request, cause 16
    -- Hungup 'Zap/10-1'
  == Auto fallthrough, channel 'Local/dialout@dialout-aecf,2' status is 'ANSWER'
    -- Executing [h@dialout:1] NoOp("Local/dialout@dialout-aecf,2", "") in new stack
       > cdr_odbc: Query Successful!
  == Spawn extension (joinup, joinup, 2) exited non-zero on 'Local/dialout@dialout-aecf,1'
    -- Executing [h@joinup:1] NoOp("Local/dialout@dialout-aecf,1", "") in new stack
       > cdr_odbc: Query Successful!