Patent ID: 7961757

Claim:
A device for interfacing with an advanced switching (AS) platform, used for interfacing a Synchronous Digital Hierarchy (SDH)/Synchronous Optical Network (SONET) network with an AS platform, comprising: in the direction from the SDH/SONET network to the AS platform, a first line side interface processing module, for searching a frame header of received SDH/SONET frames and descrambling the received SDH/SONET frames; a de-framing processing module, for de-framing signals outputted by the first line side interface processing module to obtain payloads of the SDH/SONET frames; a packaging module, for packaging a part of the payloads which is able to be scheduled by the SDH/SONET network into one or more AS packets according to a packet format of the AS platform; and a first AS interface processing module, for sending the AS packets outputted by the packaging module to a crossing structure of the AS platform; wherein if the payloads of the SDH/SONET frames are lower order traffic, the packaging module packages each of the lower order traffic into an AS packet or the packaging module splits each of the lower order traffic into several parts and packages each part into one AS packet; if the payloads of the SDH/SONET frames are higher order traffic, the packaging module splits each of the higher order traffic into several parts and packages each part into one AS packet; in the direction from the AS platform to the SDH/SONET network, a second AS interface processing module, for receiving AS packets sent by the AS platform; an un-packaging module, for un-packaging the AS packets received by the second AS interface processing module and obtaining payloads of SDH/SONET frames from the AS packets; a mapping module, for mapping the payloads into SDH/SONET frames; and a second line side interface processing module, for scrambling the SDH/SONET frames outputted by the mapping module, and transmitting the frames to the SDH/SONET network.