After installing the CoMo for Nokia client, the first thing you need to do to successfully sign-in is to get the configuration settings fields correct in the settings dialog.  We've received a number of questions on what value should be used for the “Server URL” configuration field. Many people do not know what to enter for this field or make the mistake of using the FQDN (fully qualified domain name) or IP address of Microsoft Office Communications Server 2007 R2  (OCS) Access Edge Server. For example, where 443 is the port used for remote user access.

Before we hand you the answer, let us briefly walk you through the topology that will be used for the CoMo for Nokia client to connect to the OCS environment. CoMo for Nokia is not a direct Session Initiation Protocol (SIP) endpoint like other supported OCS end points such as Microsoft Office Communicator, Microsoft Office Communicator Phone Edition and Microsoft Office Communicator for Windows Mobile. CoMo for Nokia uses the Communicator Web Access (CWA) server component which plays the role of Mobile Communicator Express (MCX) to connect the CoMo for Nokia client to the OCS environment and acts as a gateway to the various OCS functions.

The CWA/MCX gateway between CoMo for Nokia translates HTTP requests to OCS actions (and vice-versa) and also has an implementation for mobile optimization. So in order for the CoMo for Nokia unified communications client to have access to your OCS enterprise deployment, CWA is a pre-requisite. For more information on planning for Communicator Mobile access refer to

By now you must have figured out the answer but let me go ahead and spell it out, so for the “Server URL” configuration field in CoMo for Nokia client user should fill the OCS’s CWA server URL address, for example, this is provided by your enterprise system administrator.  This server URL address is same as the one that you might use in web browser to access the OCS presence, IM, and conferencing features of OCS from web browser without installing a client or connecting through a VPN.


This article is applicable for the Communicator Mobile for Java  and Communicator Mobile for Nokia 1.0 unified messaging client product of Office Communications Server 2007 R2.

Do you have a comment to share or question? Send e-mail to or leave a comment below.

Published Thursday, August 05, 2010 12:59 PM by octeam