TETHRA: TDM over Ethernet Router and Analyzer

Abstract

This paper focuses on the design and implementation of a digital equipment capable of acting as a bridge between two different networks: a plesiochronous digital hierarchy and a Fast-Ethernet network. The device, named TETHRA (TDM over Ethernet Router and Analyzer), is capable of performing the basic functions of a router, by transmitting the data contained in the received time-division multiplex (TDM) frames towards equipments connected to the Ethernet network, and vice-versa, in a transparent manner.