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Posted

Check out this article https://blog.opensips.org/2017/02/22/troubleshooting-missing-ack-in-sip/amp/

Then run a SIP trace to ensure the correct Record Route and Contact headers.

Finally, check /etc/kazoo/kamailio/local.cfg

If your IP address is still set to 0.0.0.0 or 127.0.0.1 then the Record Route header sent to the callee will be the same. This is the reason for the missing ACK and eventually the dropped call. Update your IP address to resolve.

Posted
  On 12/12/2018 at 7:57 AM, tkiziah said:

Check out this article https://blog.opensips.org/2017/02/22/troubleshooting-missing-ack-in-sip/amp/

Then run a SIP trace to ensure the correct Record Route and Contact headers.

Finally, check /etc/kazoo/kamailio/local.cfg

If your IP address is still set to 0.0.0.0 or 127.0.0.1 then the Record Route header sent to the callee will be the same. This is the reason for the missing ACK and eventually the dropped call. Update your IP address to resolve.

Expand  

 

  On 12/12/2018 at 7:43 AM, Uzair Mahmud said:

are you behind NAT?

also is your server IP 127.0.0.1 in /etc/kazoo/kamailio/local.cfg

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after adding server ip do i need to restart anything?

Posted (edited)

First, you want to completely disable the kamailio service, and enable kazoo-kamailio. Anytime that you interact with the kamailio you should be using kazoo-kamailio.

A reboot should fix this without spending to much time ontroubleshooting what is binding to the default ports.

Edited by tkiziah (see edit history)
  • 2 weeks later...
Posted

Dear Bro,

the root reason of call drop after 32 second due to ACK Timeout.

i setup my system behind NAT, so i had to config on freeswitch module:

vars.xml

  <X-PRE-PROCESS cmd="set" data="external_rtp_ip=IP NAT SERVER"/>

  <X-PRE-PROCESS cmd="set" data="external_sip_ip=IP NAT SERVER"/>

 

good luck!

  • Administrators
Posted

@thanhnn.ict you might want to look at putting those in the sipinterface_1.xml instead. Just in case you decide to run multiple SIP interfaces that may not use the same external IPs.

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