What do I need to connect a DSC 1832 control panel to a Control 4 home automation system?

I don't see DSC as a Partner.
Crestron has Partners and there is a Module needed to connect the DSC SEcurity with the Crestron, go to this link and see the sample screen:
Integrated Partner Modules - DSC [Crestron Electronics, Inc.] (http://www.crestron.com/tools_and_resources/programming_and_integration_resources/integrated_partner_modules/default.asp?manufacturer_id=228)
DSC does make an Automation Module, and besides being able to control Security System, Lighting Control, Thermostat, etc by keypad, you can also control by local phone or remote phone.
Didn't see this post until today. Good Luck.
Call Control4 and see if DSC Integrates/communicates with them.

Here is a link for DSC that explains what to use.

DSC (http://www.dsc.com/index.php?n=news&o=main&id=6)