Thanks Brian! The DNS is from the SIP provider end. I have no idea but just from the call failure rates it is in the order of minutes is my guess.

On Mon, Oct 9, 2017 at 4:04 PM, Brian West <brian@freeswitch.com> wrote:
No way you can fix this, what is the TTL on your DNS records?

./b

On Mon, Oct 9, 2017 at 3:52 PM, Sharath Kumar <shakumarsoftware@gmail.com> wrote:
Hello,
I have the below scenario.

FS talking to a service provider and the sip server has DNS load balancing.

(FS)
INVITE --> abc.com( ip = 10.10.10.10)
   407 <------abc.com
Ack-----------> abc.com

INVITE(credentials)-->abc.com (ip = 11.11.11.11)
407<-------------------abc.com
Ack------------> abc.com

The session is destroyed at this point and Freeswitch does not resend the INVITE. I want the FS not to give up and keep the INV/407/ACK cycle going.

The sofia traces indicate session terminated [904]. I understand that if DNS is going to load balance for every INVITE then the call will never be established. But I still would like to see if it can be done? Anyone else run into this issue ?

thank you,
Shaks.

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