As a web-based client, Communications Express needs to be deployed on a web container to host and provide access to its various components, and a web browser for presentation. Communications Express consists of three clients - Calendar, Address Book, and Mail. These clients are deployed as a single application on the web container and are collectively referred to as the Unified Web Client.
Calendar uses JSP pages as the presentation layer. These JSP pages can be customized to suit the requirements of the client.
Most of the features in Communications Express are fully customizable. Most features can also be customized easily during an upgrade. This guide explains the important features that are customizable.