Using mobile data card only no voice

[AC Question]

My company is looking to use android with ONLY Data no voice. We currently do this with windows mobile and there are a few REG Edits we have to do to make sure that the mobile data is always on when ever the device were to restart. I know Android does not use REG EDITS but was wondering where I could find something similar so that we can change it to always be on as oppose to roaming.