RASPBX and IBM Voice Gateway / A.I

Hello Team ,

I am trying to integrate IBM A.I solution with my raspbx platform.
I deployed IBM voice gateway in Bluemix PaaS (Kubernetes) and followed Getting started documentation.
But I don’t succeed in testing call nor from SIP Client , nor from Asterisk.
How can I transfert calls from Asterisk using this url : sip:watson@xx.xx.xx.xx:5060 ?

Thank you for your help

As this should be trivial, please show what you tired and what went wrong.