Change CallerID on SIPSTATION trunk

Is it possible to change the outgoing CallerID on my SIPSTATION trunk?
I am using SIPstation for outbound and another service for inbound, where my main company number is, which I would like to display on outgoing calls as well.

Yes, you can (and must) set your own CID with our service. You can set your CID to any legal CID. The only exception is when you call E911 emergency services. We will force your CID to be the number you selected when setting up E911 information.