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Overview 1-1
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 1-1 illustrates a typical application, where RIC-155 transports 10/100BaseT
traffic over SDH/SONET infrastructure.
STM-1/OC-3c STM-1/OC-3c
Fiber or coax Fiber or coax
ManagementData
ADM
ADM
Network
Management
Station
RIC-155
Gigabit Ethernet
Switch/Router
Central Site
IP
Network
SDH/SONET
RIC-155
Gigabit Ethernet
Switch/Router
Remote Site
Figure 1-1. Typical Application