Blackberry ENTERPRISE SOLUTION SECURITY - ENTERPRISE SOLUTION - SECURITY TECHNICAL Manuel d'utilisateur télécharger pdf (Page 50)

Process flow: Starting an instant messaging session using the BlackBerry Client for use with

Microsoft Office Communications Server 2007

1. A user logs in to a collaboration client on a BlackBerry® device.

2. The BlackBerry device compresses and encrypts the user ID and password, and sends them through the BlackBerry

Router to the BlackBerry Dispatcher over port 3101.

3. The BlackBerry Dispatcher sends the request to the BlackBerry Collaboration Service over port 3200. If the BlackBerry

Collaboration Service is located on a remote computer, the request remains encrypted using a Research In Motion

proprietary protocol.

4. The BlackBerry Collaboration Service checks the BlackBerry Configuration Database to find out if the maximum number

of sessions has been reached, and performs one of the following actions:

• If the maximum number of sessions has been reached and a timeout limit is set, the BlackBerry Collaboration

Service logs out any instant messaging sessions on BlackBerry devices that are out of coverage, and any instant

messaging sessions that are no longer sending status messages to the BlackBerry Collaboration Service.

• If there are no idle sessions, the BlackBerry Collaboration Service sends a "Server Busy" status message to the

BlackBerry device and rejects the login request.

• If the maximum number of sessions is not set and the number of sessions equals the total number that the HTTP

persistent connection supports, the BlackBerry Collaboration Service sends a "Failed" status message to the

BlackBerry device and rejects the login request.

5. The BlackBerry Collaboration Service checks the BlackBerry Configuration Database to verify that the user has

permission to use the collaboration client, and tries to authenticate the user using Integrated Windows® Authentication;

if the authentication is not successful, the BlackBerry Collaboration Service tries a forms-based login process instead.

The BlackBerry Collaboration Service sends a login request in XML format to the Microsoft® Office Communicator Web

Access Server.

Feature and Technical Overview

Instant messaging process flows

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Blackberry ENTERPRISE SOLUTION SECURITY - ENTERPRISE SOLUTION - SECURITY TECHNICAL Manuel d'utilisateur Page 50