Inbound Faxing with Microsoft Exchange 2010 Unified Messaging is a free technical whitepaper, sponsored by OpenText (registration required).
Publisher’s description
Exchange 2010 Unified Messaging (UM) provides an option for referring fax traffic to a certified fax partner so that inbound faxes can be processed to UM-enabled users. This would allow for faxes to appear in users’ Outlook mailboxes. This white paper provides details on inbound faxing in an Exchange 2010 Unified Messaging (UM) environment.