You are using older versions, I would first check if we have fixed this by testing the latest releases.  1.4 is only receiving critical security releases now and would not receive a fix if we found a problem.

On Saturday, June 18, 2016, Ashwin Jain <ashwinrkjain@gmail.com> wrote:
Hi all,

We are running Freeswitch version 1.4.26. We are facing a major problem related to audio skip with simultaneous ringing. In one flow we are ringing around 5 agents at the same time. Whenever agent 1 (any one of the agent) picks up the call, other legs (to other agents) gets a hangup event. Due to this, hangup event to all the other agent "CALL_ANSWER" event on the other side gets delayed by around 2-3 seconds and generally caller missed the first word from the agent.

Event 1: Call Answered by agent 1
Event 2: Hangup for agent 2 (due to LOSE_RACE)
Event 3: Hangup for agent 3 (due to LOSE_RACE)
Event 4: Hangup for agent 4 (due to LOSE_RACE)
Event 5: Hangup for agent 5 (due to LOSE_RACE)
Event 6: Call answered to caller

Time different between Event 1 and Event 6 is about 2-3 seconds.
Any help would be really really helpful

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Thanks and Regards,
Ashwin Jain