Use MCIS Membership System
The MCIS Membership System is a Microsoft server application that you can use to do any of the following: register new users, authenticate users, authorize access to areas of the service on a controlled basis, and generate billing events for processing by an external billing engine.

To use the MCIS Membership System, you must also enable Basic Authentication.

To use the MCIS Membership System, select Use MCIS Membership System. To disable MCIS Membership System, clear Use MCIS Membership System.