| 摘要 |
<p>A computer network (400) system establishes an instant messaging (IM) session between a first user (407) registered with a first ISP (405) and at least one user (442) registered with a second ISP (430) when the two ISPs (405, 430) using different IM protocols. The ISPs (405, 430) each contain a Local IM server (420, 435) connected to each registered user (407, 412, 442, 457). Each ISP (405, 430) also contains a Universal IM server (425, 450) that is connected to the distributed network (400). The Universal IM server (425, 450) includes a database (427, 452) that stores routing information and Presence information for each user registered with the second ISP's (430) and facilitates communications between the first and second user (407, 442) using a universal format, such as XML.</p> |
