Chapter 1. Introduction; Overview; Figure 1-1. Cdm-840 Remote Router - Comtech EF Data CDM-840 Installation And Operation Manual

1.1

Overview

The CDM-840 Remote Router (Figure 1-1) is an integral component of Comtech EF Data's
Advanced VSAT Series product offering. This point-to-multipoint IP Remote Router has been
developed as the "spoke" or remote site equipment in hub-and-spoke network topologies that
require high quality "always-on" availability.
Featuring one 10/100/1000 Gigabit Ethernet (GigE) interface, one 10/100 Fast Ethernet (FE)
interface, and providing industry-leading WAN bandwidth optimization, the CDM-840 is
designed to support latency-sensitive applications such as cellular backhaul over satellite,
Universal Service Obligation (USO) networks, corporate networks, Internet Service Providers,
and other applications requiring high-performance IP transport in hub-and-spoke network
environments. The CDM-840 also features integrated VersaFEC, a patented system of high-
performance, short-block, low-latency codes that provide excellent coding gain with lowest
possible latency.
Key operational features of the CDM-840 include:
•
Advanced Forward Error Correction (FEC) – VersaFEC low-latency LDPC
•
DVB-S2 Receiver with low overhead encapsulation
•
Integrated Router:
o Low Overhead Encapsulation
o Quality of Service (QoS)
o
•
L-Band operation from 950 to 2150 MHz
•
Block Up Converter (BUC) and Low-Noise Block Down Converter (LNB) support
•
20%, 25%, and 35% Rolloff

Chapter 1. INTRODUCTION

Figure 1-1. CDM-840 Remote Router

(FUTURE) Payload Compression
1–1