| 摘要 |
<p>A cross connect physical layer switching system is integrated into a central office and facilitates delivering data services, such as digital subscriber line (DSL) service, to subscribers over a shared data and voice line. The cross connect physical layer switching system may be placed between a splitter and the shared line to allow a remote test unit to be controllably connected to the shared line to permit testing of the shared line by a competitive local exchange carrier (CLEC). By placing the physical layer switching system in the CO, both the CLEC and the incumbent local exchange carrier (ILEC) have full access to the test head (RTU) and full spectrum testing of the line. This allows test access to continue to be done remotely as in an unshared line environment. <IMAGE></p> |
