Comtech EF Data CDM-700 - Manual (Page 243)

E–1
Appendix E. 10/100/1000 BASE-T
INTERFACE (GBEI) (CDI-70)
E.1 Introduction
The CDI-70 10/100/1000 Base-T Ethernet Interface, or GBEI, acts as an Ethernet bridge for data
traffic. Monitor and Control (M&C) information is not supported on the GBEI but available
through the 10/100 Base-T remote port of the modem.
The GBEI provides 10/100/1000 Base-T connectivity and supports data rates from 1 Mbps to 155
Mbps. IP traffic entering the interface is encapsulated in HDLC protocol for transmission over the
satellite link. In normal mode, the packets are passed unaltered. For VLAN mode, native VLAN
processing and/or VLAN tagging is supported. HDLC CRS-16 verification is performed on all
received (from WAN) HDLC frames.
The GBEI is shown in Figure E-1. The user interface to the GBEI module is a single IEEE
802.3ab 1000 Base-T copper-compliant female RJ-45 connector wired as described in Table E-1.
Figure E-1. CDI-70 1000 Base-T Gigabit Ethernet Interface (GBEI)