I need to make a call from my soft phone  to another freeswitch ,when the call is established (i meant (INVITE ,OK , RINGING or Progress.dession .)  and after the ring is done to the freeswitch i will listen for example a song ,for that i make an external gateway  ,but the step "ringing or progress session " is not estableshed 

i need to call the extension 600

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thanks 

with regards

amani