Long Connection time to ring group

I am using ring group of 15 extensions . it tooks about 5-12 seconds to connect when an extension picked up a call (slience on both end but other extensions kept ringing). I have similiar set up on another server and calls are connected within 1-2 seconds.
I cannot figure out what is the problem. Please help. Thanks.

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Howdy! Welcome to the forums.

It looks like you may have tried to paste some logs (which is good) but they didn’t come through. There is a pastebin.freepbx.org service which you may find helpful (please scrub your logs first of any private information.)