Sun Java System Communications Express 6 2005Q4 Administration Guide

Chapter 1 Overview of Communications Express

Sun Java™ System Communications Express 6.1 2005Q4 provides a 508 compliant integrated web-based communication and collaboration client that caters to the needs of Internet Service Providers, Enterprises, and Original Equipment Manufacturers.

As a web-based client, the three client modules - Calendar, Address Book, and Mail of Communications Express depends on a browser for presentation.

This chapter contains the following sections:

System Requirements

This section describes the following:


The product is supported on following platforms:

For optimal performance, use the browser and platform combinations listed below.

Table 1–1 Browser Platform Recommendations


Windows XP 




RH Linux 

Macintosh OS X 

Netscape™ Communicator 






Internet Explorer 

6.0 sp1+ 

6.0 sp1+ 










Software Dependencies

The following should be installed before installing Communications Express:

Product Features

High-Level Architecture

The Calendar and Address Book client modules are deployed as a single web application in any web container. The mail module is rendered by the Messenger Express. Messenger Express is the standalone web interface mail application that uses the HTTP service of the Messaging Server.

Messenger Express or MEM should be deployed on the same system where Communications Express is deployed.

Figure 1–1 High Level Architecture

High Level Architecture

FAQ’s on Deployment

This section provides answers to some frequently asked questions.

What is the purpose of Single Sign-on?

Single Sign-on is required to seemlessly interoperate between calendar, address book, and mail.

When should I use Messaging Single Sign-On?

If the Messaging Server has already been setup to use Sun Java System LDAP Schema1 without Access Manager support, enable Messaging Single Sign-On to authenticate.

To enable Single Sign-on in Communications Express using Messaging Single Sign-On, refer to the section on Setting up Messaging Single Sign-On in Chapter 4 of this guide.

When should I use Access Manager Single Sign-On?

If you have an existing setup with Sun Java System LDAP Schema 2 configured, enable the Access Manager Single Sign-on.

To enable Single Sign-on in Communications Express using Access Manager Single Sign-On, refer to the section Setting up Access Manager Single Sign-On in Chapter 4 of this guide.

What are the deployment requirements for Communications Express?

ProcedureDeployment Requirements

  1. If mail is enabled, Messenger Express should be installed and configured on the same host.

    1. Can I point my Communications Express to a remote Messaging Server?

      You can. For this you need to install the Messaging Server on the same host as the Communications Express, configure this messaging installation as MEM and point it to the remote Messaging Server.

  2. If Access Manager is enabled, Install Access Manager on the same machine as Communications Express, or install Access Manager SDK and configure it to point to the remote Access Manager.

    To configure remote Access Manager SDK, refer to the steps mentioned under the procedure Setting up Access Manager Single Sign-On

Can PAB entries from an existing Messaging Server, for example, Messaging Server 5.2 or Messaging Server 6.0, be migrated to Communications Express?

Yes. Refer to Chapter 7, Migrating PAB Data to Addressbook Server for migration details.

Can any of the application in Communications Express be disabled?

You can disable Calendar and Mail application, but cannot disable the Address book Application.