Freepbx peer to peer connection to alcatel-lucent omnipxc oxo

hi, kindly assist…

i have successfully configured one way calls from freepbx17 to alcatel-lucent omnipcx

oxo but reverse calls from oxo are failing without a sip invite meaning they are failing internally. How do i change my configurations such that bidirectional calls are possible

I think we need to know how your trunk is configured in FreePBX 17.
It’s easy to make mistakes with PJSIP.