Patent ID: 6208654
Filing Date: 2001-03-27
Classification: H04J,H04L,H04Q

Abstract:
A cell multiplexing method for mapping asynchronous fixed-length cells onto an existing synchronous digital interface, comprising the steps of:terminating lines of a plurality of synchronous digital interfaces;generating a timing signal for specifying respective timing of a plurality of time slot groups in order to divide a plurality of time slots structuring each of the plurality of synchronous digital interfaces into the plurality of time slot groups, in each of said synchronous digital interfaces;identifying a single predetermined time slot group among the plurality of time slot groups in a single predetermined synchronous digital interface among the plurality of synchronous digital interfaces based on the timing signal, and mapping a data stream of asynchronous fixed-length cells, which belongs to a single predetermined communication device interface among a plurality of communication device interfaces, onto the identified single time slot group; andswitching said single predetermined synchronous digital interface and said single predetermined time slot group to another extra synchronous digital interface and another extra time slot group.