You can intercept incoming or outgoing calls for users in your organization. If this is enabled, calls are either routed to a designated number you choose, or to the user's voicemail.
From the customer view in https://admin.webex.com, go to Users and select the user that you want to edit.
Toggle the button to change the settings for the user.
Under Incoming Calls, choose Allow all incoming calls or Intercept all incoming calls.
If you choose Intercept all incoming calls, set up the features you need:
Under Phone Number Announcements, choose from the following options, and and enter the number re-directs:
For Outgoing Calls, choose from the following:
Click Save to confirm your changes.