Cisco Jabber for Windows 9.2.3 Release Notes
Release Information
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Release Information

Release Information

Documentation Resources

Installation and Configuration Guide

The Installation and Configuration Guide contains the following information:
  • System and network requirements
  • Hardware requirements
  • Supported software and devices
  • Information to help you plan your deployment
  • Installation procedures
  • Client configuration requirements and information

Find the Installation and Configuration Guide for each release at http:/​/​www.cisco.com/​en/​US/​products/​ps12511/​prod_​installation_​guides_​list.html

Server Setup Guide

The Server Setup Guide provides task-based information to help you configure services for the client. This guide is available at http:/​/​www.cisco.com/​en/​US/​products/​ps12511/​prod_​installation_​guides_​list.html

Licensing Information

Find out what open source libraries and other licensing information at http:/​/​www.cisco.com/​en/​US/​products/​ps12511/​products_​licensing_​information_​listing.html

New in this Release

Find out what's new in the latest release.

Change to XMPP Ports for Cisco WebEx Messenger Service

As of version 9.2.3, Cisco Jabber for Windows sends XMPP traffic to the Cisco WebEx Messenger service through port 443 by default. If port 443 is blocked, Cisco Jabber for Windows sends XMPP through port 5222.

Important:
  • Ensure that your firewall does not block port 443.
  • Change any proxy configuration to allow the client to connect to the Cisco WebEx Messenger service on port 443.
  • Proxies that analyze and intercept non-HTTP traffic on port 443 might not allow XMPP-TLS traffic. In this case, the only alternative is to allow XMPP-TLS over port 5222.

Removal of BOSH as Transport Protocol

As of this release, the client no longer uses Bidirectional-streams Over Synchronous HTTP (BOSH) to connect to the Cisco WebEx Messenger service through port 443. The client uses only XMPP within TLS to connect to the Cisco WebEx Messenger service through port 443.

Summary of Port and Protocol Combinations for Cloud-Based Deployments

Cisco Jabber for Windows uses different ports and protocols to connect to the Cisco WebEx Messenger service, as follows:
Versions 9.0.x and 9.1.x

XMPP-SSL over port 443

Version 9.2.0, 9.2.1, and 9.2.2

XMPP-STARTTLS over port 5222. Fallback to XMPP-BOSH over port 443.

Version 9.2.3

XMPP-TLS over port 443. Fallback to XMPP-STARTTLS over port 5222.