Blue Integrator supports AS2 (Applicability Statement 2) transports. They are configured in the Ports section as with any other transport.
Essentially the AS2 Receive Transport Provider allows you to subscribe for entries from the AS2 Inbox based upon various criteria, e.g. Sender, Certificate or Subject. You must run at least one copy of the AS2 Gateway in order for AS2 Messages to be received via HTTP and forwarded to Blue Integrator.
The AS2 Send Transport provider allows you to provide destination, header, encryption, signature and receipt information in order to send an AS2 Message to an AS2 recipient.