Patent ID: 6529479
Filing Date: 2003-03-04
Classification: H04L,H04Q

Abstract:
An SVC accessing method for use in an ATM-DSLAM, with which a subscriber side terminating device accesses an access server connected to a cell switch network by using a fixed-length cell via an accommodation station side terminating device accommodating a subscriber line to which the subscriber side terminating device is connected, comprising:continuously connecting the access server and the accommodation station terminating device with a permanent virtual connection; managing an unused virtual connection within the permanent virtual connection in the access server and the accommodation station side terminating device; allocating an unused virtual connection to the subscriber side terminating device by communicating with the access server based on a call originating request issued from the subscriber side terminating device, in the accommodation station side terminating device; managing an unused virtual connection within the permanent virtual connection while exchanging information about the unused virtual connection by using a management and maintenance broadcast cell at predetermined time intervals, in the access server and the accommodation station side terminating device; and allocating an unused virtual connection to the subscriber side terminating device by communicating with the access server by using a management and maintenance broadcast cell based on the call originating request issued from the subscriber side terminating device, in the accommodation station side terminating device.