Asterisk outbound Dialer on Php Voip

I have Asterisk dialer for outbound shortcalls compagins its dialing perfect all calls issue what we need to fix which see we are getting if we are sending 10calls per second it will dial for a min then pause for 50sec then restart dialing i want keep sending calls at 10cps without take pause please bid only if you understand issue we both can save time of each other