| 摘要 |
Structure comprises an input-output router (2) associated with an access controller (3). The access structure comprises a central multiplexor (4) with a fast connection line (5) to the router. The router has at least one fast connection (12, 13) to a transformation center (14) that is in turn connected to a number of slow connection lines (17) and distributed transformers (16) with local connection lines (18) to distributed multiplexors (11) with slow speed connections to end users (7). |
