ast

 == Using SIP RTP CoS mark 5
       > 0x1f55730 -- Strict RTP learning after remote address set to: 192.168.91.157:12426
    -- Executing [1234@call-out:1] Answer("SIP/5444-00000008", "") in new stack
       > 0x1f55730 -- Strict RTP switching to RTP target address 192.168.91.157:12426 as source
    -- Executing [1234@call-out:2] AGI("SIP/5444-00000008", "googletts.agi,"Google text to speech for Asterisk",en") in new stack
    -- Launched AGI Script /var/lib/asterisk/agi-bin/googletts.agi
    -- <SIP/5444-00000008>AGI Script googletts.agi completed, returning 0
    -- Executing [1234@call-out:3] AGI("SIP/5444-00000008", "googletts.agi,"has been successfully installed.",en") in new stack
    -- Launched AGI Script /var/lib/asterisk/agi-bin/googletts.agi
    -- <SIP/5444-00000008>AGI Script googletts.agi completed, returning 0
    -- Executing [1234@call-out:4] AGI("SIP/5444-00000008", "googletts.agi,"Hip Hip Hooray",en") in new stack
    -- Launched AGI Script /var/lib/asterisk/agi-bin/googletts.agi
    -- <SIP/5444-00000008>AGI Script googletts.agi completed, returning 0
    -- Executing [1234@call-out:5] Hangup("SIP/5444-00000008", "") in new stack
  == Spawn extension (call-out, 1234, 5) exited non-zero on 'SIP/5444-00000008'