The invention includes a method and apparatus for synchronously switching
at least one plesiochronous signal within a network element.
Specifically, a method according to one embodiment of the invention
includes receiving the at least one plesiochronous signal, and mapping
the at least one plesiochronous signal into at least one synchronous
signal. The at least one synchronous signal includes at least one
virtually-concatenated signal, where each of the at least one
virtually-concatenated signal includes a plurality of sub-signals, and
each of the sub-signals is adapted for being synchronously switched
within the network element.