Installing the Office Communicator Mobile for Windows Mobile Client
Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
The 2007 R2 release of Microsoft Office Communicator Mobile is supported in an Office Communications Server 2007 R2 deployment. Previous 2007 releases of Office Communicator Mobile can be upgraded directly to Office Communicator Mobile 2007 R2.
For devices running the 2005 release of Communicator Mobile, you must first remove the 2005 release of Communicator Mobile and then install Office Communicator Mobile.
The procedure for installing Office Communicator Mobile includes the following:
Communicator Mobile for Windows Mobile Installation Prerequisites
Installing Communicator Mobile for Windows Mobile over the air (OTA)
Installing Communicator Mobile for Windows Mobile using Windows Mobile Device Center
Installing Communicator Mobile for Windows Mobile Using ActiveSync 4.5
Installing Communicator Mobile for Windows Mobile from a Storage Card