Chapter 10. Cdi-70 1000 Base-Tgigabit Ethernet (Gige) Interface Module; 10.1 Introduction; Figure 10-1. Cdi-70 10/100/1000 Base-T Gigabit Ethernet (Gige) Interface Module - Comtech EF Data CDM-710 Installation And Operation Manual

Chapter 10. CDI-70 1000 Base-T
GIGABIT ETHERNET (GigE)
INTERFACE MODULE

10.1 Introduction

The CDI-70 1000 Base-T Gigabit Ethernet (GigE) Interface (Figure 10-1) – referred to hereafter
as the CDI-70 or the GigE Interface – is a plug-in module that is installed into the rear of the
CDM-710 Broadcast Satellite Modem chassis. It performs a Motion Picture Expert Group
(MPEG-2) packet decapsulation operation on ingress Internet Protocol (IP) packets received from
the Local Area Network (LAN). MPEG-2 packets are extracted from the active (of up to two
multicast) connection and forwards the extracted MPEG-2 packets to Wide Area Network
(WAN) (satellite connection). In addition, an MPEG-over-IP transmit function is performed, in
which MPEG-2 packets are received from the WAN and are encapsulated in IP packets and
transmitted to the LAN (egress).

Figure 10-1. CDI-70 10/100/1000 Base-T Gigabit Ethernet (GigE) Interface Module

Monitor and Control (M&C) information is not supported on the CDI-70 but is available through
the 10/100 Base-T remote port of the modem. The CDI-70 supports data rates from 1.5Mbps to
either 80.376 Mbps with SMPTE 2022 (formerly Pro-MPEG COP3) FEC enabled or 124 Mbps
with SMPT 2022 / Pro-MPEG COP3 FEC disabled.
Due to backplane limitations, Slot 1 of the CDM-710 – located at the center right of the chassis rear
panel – is typically filled with a blank panel or is reserved for a CDI-40 ASI or CDI-60 HSSI
10–1