Goal: Integrate HomeSeer with my Cisco Call Manager using the HS SIP plugin.
How: Integrate HomeSeer with SIP telephony, for example using SIP, Skype or HSphone plugin
Ideal: Direct SIP integration of HS with my CUCME system with Cisco IP phones.
Cost: Skype plugin ($29), HSphone plugin ($49) or combined ($49!)

Todo
Integration of Homeseer with SIP plugin and free SIP softphone account.
Integration with SIP IP phones connected to the Cisco Call Manager.
Create Skype account and test Skype plugin. See if HSphone is needed.

Links
Skype plugin documentation
Skype for SIP on Cisco UC500 integration
UC500 integration with other SIP/H.323 providers