A Design on Speed Auto-negotiation Technology of Interface

An independent design on speed auto-negotiation technology of PDH/SDH interface is proposed,which is simple,flexible,and low-overhead. This technology is suitable for transfer bandwidth equal to speed confirmed through auto-negotiation and based on the same interface interlinkage. It could ensure reliable inter-operability between the interfaces,thus could simplify the operation of network device while raising the intelligence of device networking.