| 摘要 |
The invention relates to a communication system, especially a community, having an application layer (2), a presentation layer (3) and a data access layer (4), wherein the application layer (2) has a core device(21), several core components (22) and several application components (23). The invention further relates to a communication system having an application layer (2), a presentation layer (3) and a data access layer (4), wherein the communication system has several virtual working areas (5).
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