Connecting Unity Express with Cisco Unified Call Manager

It is not widely known but you can use Cisco Unity Express as your voicemail system with full blown CallManager as well as Call Manager Express.
Unit Express will work with versions 4.2 and 5.0 of Cisco Unified Call Manager.
The complete Installation procedure is available from Cisco at this link:

http://www.cisco.com/en/US/docs/voice_ip_comm/unity_exp/rel2_0/ccm_cli/ccmcligd.html

When purchasing Unity Express be sure to license the version appropriate to either CallManager or CallManager Express