| 摘要 |
<p>A Telecommunication system for providing multiple telecommunication services (ISDN, ADSL, POTS) to residential customers each of which being separately connected to access points in a central telecommunication office by single copper access wires, the access points corresponding respectively to the telecommunication service required by the customer. In order to facilitate a change from one telecommunication service to another for the end user, a switching device is comprised for selectively allocating telecommunication services access points corresponding to customer-selected services to the respective customer access wires.</p> |
