| 摘要 |
A data processing device arranged for networking with other such processing devices (410, 420) over an addressed packet-based data communication medium (309; 400; 504; 806), having a user interface, and being arranged to conduct an addressed point-to-point packet-based call directly between itself and another such processing device over the communication medium, and being characterised by:
being arranged to signal (706) to a call set-up address exchange control processor (300), in accordance with a call set-up protocol, the identity of a desired destination processing device (420); and
being responsive to receipt (720) of the address of the desired destination processing device subsequently to conduct an addressed point-to-point packet-based call directly between itself and the desired destination processing device. |
