1.3.2 Fax Client Protocol
The Fax Server and Client Remote Protocol is used for notifications. When activity occurs on the server—for example, when a new fax is received, a change occurs in the status of an outgoing fax, or a change occurs in configuration—events are generated. Clients that register for these events can act like RPC servers, with the fax server as the RPC client, and get these events with the event type and event data as described in section 3.2.
This can be used either locally, where both the client and server are on the same machine, or remotely, where the client and server are on different machines.