| 摘要 |
<p>A service looping method for synchronous digital system is provided in the present invention, the method includes: an access unit accesses the service; the service is looped to the access unit via a crossing unit. A service looping device for synchronous digital system is also provided in the present invention, the device comprises: an access unit, used to access the service; a crossing unit, used to loop the service to the access unit. The present invention enables the looping operation for all level services.</p> |
