Blackberry ENTERPRISE SOLUTION SECURITY - SECURITY FOR DEVICES WITH BLUETOOTH WIRELESS TECHNOLOGY - TECHNICAL Bedienungsanleitung PDF herunterladen (Seite 73)

Instant messaging process flows

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

Microsoft Office Live Communications Server 2005 (Microsoft Office Communicator)

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 no idle sessions exist, 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.

Feature and Technical Overview

Instant messaging process flows

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Blackberry ENTERPRISE SOLUTION SECURITY - SECURITY FOR DEVICES WITH BLUETOOTH WIRELESS TECHNOLOGY - TECHNICAL Bedienungsanleitung Seite 73