Patent ID: 9215137
Filing Date: 2015-12-15
Classification: H04J,H04L

Abstract:
1. A relay device, which relays communication between communication networks of different communication standards, comprising: a failure detection unit which detects a failure in a middle path of communication information received from one communication network; and a relay processing unit which outputs, when the communication information received from the one communication network is relayed to another communication network, communication information storing information about failure occurrence detected from the communication information received from the one communication network in a header of the communication information to the other communication network, the one communication network being a wireless E1 line which forms a PDH network, the other communication network being an STM-1 line which forms an SDH network, the failure detection unit detects the failure in the wireless E1 line, and when the failure has been detected, the relay processing unit encapsulates communication information of the wireless E1 line received from the PDH network and stores the failure occurrence information in an N2 byte field within a header of the encapsulated communication information, and the relay processing unit transmits the encapsulated communication information through the STM-1 line.