Validate your Cloud Connector deployment
After you've completed the steps to deploy and configure Skype for Business Cloud Connector Edition, verify that you can make and receive calls.
Validate the deployment
Log in to your Skype for Business client with a user account you just set up.
Call a PSTN number from the client and confirm that the call succeeds.
Use your phone or other device associated with the PSTN number to call your Skype for Business client and confirm that the call succeeds.
You should confirm that you can successfully make calls after adding additional sites or converting sites to enable HA support.