Exchange 2007 to Exchange 2010 with Lync, Sharepoint and RMS

Hi

We have to work on a Exchange 2007 to Exchange 2013 upgrade assignment. The existing environment consists of following infrastructure elements:

1. Exchange 2007 with Unified Messaging

2. Lync 2010

3. Sharepoint

4. Windows AD RMS

Before anything else, we need to evaluating the impact of Exchange 2007 to Exchange 2013 upgrade on the Lync, Sharepoint, RMS and UM functionalities, which are integrated with Exchange 2007 environment.

Any reference links/DOCs or suggestions based on experience from community are welcome.

Thanks

Taranjeet Singh

zamn