When any call is coming server, I am just playing a .wav file. Recording file length is 120min. 

Using bind_digit_action, user able to pause, seek, speed volume up and down.

But no have time to listen 120min recording at a time. So If user will press a key, example 9 then save that playing location with caller phone number. If same caller calling from same number then start playing file from same where bookmark key was pressed.  
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