Chapter 1

Introduction

1.1 Overview

RIC-155 is a converter that enables simple and efficient connection of Fast Ethernet traffic over STM-1/OC-3c lines. Equipped with a 10/100BaseT and fiber optic or coaxial STM-1 interface, RIC-155 serves as cost-effective alternative to ATM devices and routers. The RIC-155’s packet-over-SONET encapsulation protocol enables virtually total utilization of SDH/SONET payload traffic, since only a small header is required. RIC-155 supports VLAN bridging, flow control and backpressure, according to IEEE 802.3x requirements.

Versions

STM-1/OC-3c Interface Options

Fiber optic interface

Electrical interface.

Power Supply Options

The following power supply versions are available:

100–240 VAC

24 VDC or -48 VDC.

Application

Figure 1-1illustrates a typical application, where RIC-155 transports 10/100BaseT traffic over SDH/SONET infrastructure.

Central Site

 

 

Remote Site

RIC-155

 

 

 

RIC-155

 

 

Fiber or coax

SDH/SONET

Fiber or coax

Data

Management

STM-1/OC-3c

 

STM-1/OC-3c

ADM

 

ADM

 

 

 

IP

Network

Gigabit Ethernet

Network

Switch/Router

Management

Station

 

Gigabit Ethernet

Switch/Router

Figure 1-1. Typical Application

Overview 1-1

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RAD Data comm RIC-155 operation manual Chapter Introduction, Overview, Versions, Application