[cisco-voip] Unity APIs? (specifically, API for changing forward settings)

[Seth Call]

Hello everyone,

I'm currently digging around, looking for APIs I can hook into to
control Unity programmatically.

The specific reason is this:  

In the Unity TUI, I understand you can, on a single voicemail basis,
forward an email to another extension... Is there a way to forward all
voicemails to a different extension using an API?

Thanks,
Seth Call