проблема с внешними вызовами через call файл

Добрый день

Проблема при звонке call файлом внешнему абоненту черех FXO интерфейс. Звонок проходит, однако происходит автоматическое исполнение контекста даже без снятия трубки абонентом.

Пример call файла

Channel: Local/101@internal
Callerid: 911
MaxRetries: 2
RetryTime: 30
WaitTime: 10
Context: pa-call-file
Extension: s
Set:  file_alarm=pa-message
Priority: 1

Внешние линии в контексте internal

exten => _X.,1,Dial(DAHDI/g2/${EXTEN})  
exten => _X.,n,Hangup()

Контекст

[pa-call-file] 
exten => s,1,Answer()
exten => s,n,Set(CDR(userfield)=NO)
exten => s,n,Set(numTries=0) 
exten => s,n,Wait(2)
exten => s,n,Background(zdravstujte) ;(привет)
exten => s,n,WaitExten(1)
exten => s,n,Background(followme/pls-hold-while-try) ;поступило сообщение
exten => s,n(naberite),Background(${file_alarm}) ;(текст оповещения)
exten => s,n,WaitExten(1)
exten => s,n,Set(numTries=$[${numTries}+1]) ; прибавляем 1
exten => s,n,GotoIf($[${numTries}=3]?s,ha) ; если было 3 попытки выход
exten => s,n,Goto(s,naberite) ; если небыло 3 попыток повторяем
exten => s,n(ha),Goto(pa-call-file-end,1,1)
[pa-call-file-end]
exten => 1,1,Set(CDR(userfield)=OK)
exten => 1,n,Hangup

Логи

 -- Attempting call on Local/1242@alarm/n for s@pa-call-file:1 (Retry 1)
    -- Executing [1242@alarm:1] Dial("Local/1242@alarm-41e4;2", "DAHDI/g2/1242") in new stack
    -- Called DAHDI/g2/1242
    -- DAHDI/25-1 answered Local/1242@alarm-41e4;2
       > Channel Local/1242@alarm-41e4;1 was answered.
    -- Executing [s@pa-call-file:1] Answer("Local/1242@alarm-41e4;1", "") in new stack
    -- Executing [s@pa-call-file:2] Set("Local/1242@alarm-41e4;1", "CDR(userfield)=NO") in new stack
    -- Executing [s@pa-call-file:3] Set("Local/1242@alarm-41e4;1", "numTries=0") in new stack
    -- Executing [s@pa-call-file:4] Wait("Local/1242@alarm-41e4;1", "2") in new stack
    -- Executing [s@pa-call-file:5] BackGround("Local/1242@alarm-41e4;1", "zdravstujte") in new stack
    -- <Local/1242@alarm-41e4;1> Playing 'zdravstujte.slin' (language 'en')
    -- Executing [s@pa-call-file:6] WaitExten("Local/1242@alarm-41e4;1", "1") in new stack
    -- Timeout on Local/1242@alarm-41e4;1, continuing...
    -- Executing [s@pa-call-file:7] BackGround("Local/1242@alarm-41e4;1", "followme/pls-hold-while-try") in new stack
    -- <Local/1242@alarm-41e4;1> Playing 'followme/pls-hold-while-try.slin' (language 'en')
    -- Executing [s@pa-call-file:8] BackGround("Local/1242@alarm-41e4;1", "pa-message") in new stack
    -- <Local/1242@alarm-41e4;1> Playing 'pa-message.slin' (language 'en')
    -- Executing [s@pa-call-file:9] WaitExten("Local/1242@alarm-41e4;1", "1") in new stack
    -- Timeout on Local/1242@alarm-41e4;1, continuing...
    -- Executing [s@pa-call-file:10] BackGround("Local/1242@alarm-41e4;1", "vm-repeat") in new stack
    -- <Local/1242@alarm-41e4;1> Playing 'vm-repeat.slin' (language 'en')
    -- Executing [s@pa-call-file:11] WaitExten("Local/1242@alarm-41e4;1", "3") in new stack
    -- Timeout on Local/1242@alarm-41e4;1, continuing...
    -- Executing [s@pa-call-file:12] Set("Local/1242@alarm-41e4;1", "numTries=1") in new stack
    -- Executing [s@pa-call-file:13] GotoIf("Local/1242@alarm-41e4;1", "0?s,ha") in new stack
    -- Executing [s@pa-call-file:14] Goto("Local/1242@alarm-41e4;1", "s,naberite") in new stack
    -- Goto (pa-call-file,s,8)
    -- Executing [s@pa-call-file:8] BackGround("Local/1242@alarm-41e4;1", "pa-message") in new stack
    -- <Local/1242@alarm-41e4;1> Playing 'pa-message.slin' (language 'en')
    -- Executing [s@pa-call-file:9] WaitExten("Local/1242@alarm-41e4;1", "1") in new stack
    -- Timeout on Local/1242@alarm-41e4;1, continuing...
    -- Executing [s@pa-call-file:10] BackGround("Local/1242@alarm-41e4;1", "vm-repeat") in new stack
    -- <Local/1242@alarm-41e4;1> Playing 'vm-repeat.slin' (language 'en')
    -- Executing [s@pa-call-file:11] WaitExten("Local/1242@alarm-41e4;1", "3") in new stack
    -- Timeout on Local/1242@alarm-41e4;1, continuing...
    -- Executing [s@pa-call-file:12] Set("Local/1242@alarm-41e4;1", "numTries=2") in new stack
    -- Executing [s@pa-call-file:13] GotoIf("Local/1242@alarm-41e4;1", "0?s,ha") in new stack
    -- Executing [s@pa-call-file:14] Goto("Local/1242@alarm-41e4;1", "s,naberite") in new stack
    -- Goto (pa-call-file,s,8)
    -- Executing [s@pa-call-file:8] BackGround("Local/1242@alarm-41e4;1", "pa-message") in new stack
    -- <Local/1242@alarm-41e4;1> Playing 'pa-message.slin' (language 'en')
    -- Executing [s@pa-call-file:9] WaitExten("Local/1242@alarm-41e4;1", "1") in new stack
    -- Timeout on Local/1242@alarm-41e4;1, continuing...
    -- Executing [s@pa-call-file:10] BackGround("Local/1242@alarm-41e4;1", "vm-repeat") in new stack
    -- <Local/1242@alarm-41e4;1> Playing 'vm-repeat.slin' (language 'en')
    -- Executing [s@pa-call-file:11] WaitExten("Local/1242@alarm-41e4;1", "3") in new stack
    -- Timeout on Local/1242@alarm-41e4;1, continuing...
    -- Executing [s@pa-call-file:12] Set("Local/1242@alarm-41e4;1", "numTries=3") in new stack
    -- Executing [s@pa-call-file:13] GotoIf("Local/1242@alarm-41e4;1", "1?s,ha") in new stack
    -- Goto (pa-call-file,s,15)
    -- Executing [s@pa-call-file:15] Goto("Local/1242@alarm-41e4;1", "pa-call-file-end,1,1") in new stack
    -- Goto (pa-call-file-end,1,1)
    -- Executing [1@pa-call-file-end:1] Set("Local/1242@alarm-41e4;1", "CDR(userfield)=OK") in new stack
    -- Executing [1@pa-call-file-end:2] Hangup("Local/1242@alarm-41e4;1", "") in new stack
  == Spawn extension (pa-call-file-end, 1, 2) exited non-zero on 'Local/1242@alarm-41e4;1'
[Nov 17 17:44:31] NOTICE[3394]: pbx_spool.c:366 attempt_thread: Call completed to Local/1242@alarm/n
    -- Hanging up on 'DAHDI/25-1'
    -- Hungup 'DAHDI/25-1'

В чем может быть проблема, куда рыть.