Patent ID: 8780386

Claim:
A system for use in real-time facsimile transmissions between a transmission device and a reception device over a packet switched communication network, the system implementing a client-server model and including a restriction element, the system comprising: a transfer client communicably connectable to the transmission device on a client side of the client-server model; and a transfer server communicably connectable to the reception device on a server side of the client-server model, wherein the restriction element is communicably connectable between the transfer client and the transfer server, thereby separating the transfer client and the transmission device on the client side of the client-server model from the transfer server and the reception device on the server side of the client-server model, and wherein the transfer client is operative: to receive a transmission from the transmission device; to preestablish a communication session between the transfer client and the transfer server over specified ports independent of whether the respective ports fall within a specific port range; and following a preestablishment of the communication session between the transfer client and the transfer server: to exchange transmission control message with the transfer server via the preestablished communication session; and to send the transmission, via the preestablished communication session through the restriction element over the specified ports, to the transfer server as a real-time transmission for receipt at the reception device.