Fault location detection circuit between ASICs in multi-stage broadband switch

摘要

An object of the present invention is to provide a fault location detection circuit between ASICs in a multi-stage broadband switch such as an AU3 / 4 unit switch device, and in order to achieve the above object, the SDH over to secure the integrity between ASICs. The B1 byte of the head is used as a storage area, and the existing simple BIP circuits (11 to 15) are added to the ASIC to identify the fault position at the system level. Accordingly, the present invention provides a multi-stage using multiple ASICs. It is easy to detect the fault location between ASICs in broadband switch devices, making the system easier to maintain.