When you log into your account there is an option to add callerid.
Just enter your callerid and click "Add New Callerid".
That's it.
You can even have a 2nd outbound callerid.
You have to send them an email requesting a sub-account with the callerid.
They will set this up and send to an email with the credentials of the sub-account.
They are a fairly new company and are still adding new features.
Hopefully, they will automate this procedure in the future.
Here is the config setup:
http://www.circlenet.us/drupal7/?q=node/15OBi setup is at the bottom of the page.
If you have GV on SP1, setup CircleNet on SP2.
You then need to change the Phone Port Primary Line to "SP2 Service".
There basic account is for outbound only.
If you want to use them for inbound you need to purchase a DID.
There is also a per minute charge.
Edit:
After you change the callerid it takes a few minutes for their servers to get updated.