Raisecom RCMS2902-2E1GE-BL - 8 Appendix; Introduction about Making Cables; Making Ethernet Cables

Raisecom
RCMS2902-2E1GE-BL Product Description
8 Appendix
Raisecom Technology Co., Ltd.
19
8 Appendix
This chapter describes how to make cables commonly used for the RCMS2902-2E1GE-BL,
FAQ, terms and abbreviations involved in this guide, including the following sections:

Introduction about making cables

FAQ

Terms

Abbreviations
8.1 Introduction about making cables
8.1.1 Making Ethernet cables
The Ethernet cables have two types:

Straight-through cable: used to connect devices of different types, such as a PC and a
switch/switch and router.

Crossover cable: used to connect devices of the same type, such as between 2
PCs/switches/routers, or between a PC and a router (they are divided into the same group)
The RCMS2902-2E1GE-BL supports auto-MDI/MDIX, which means that both the straight-
through mode and crossover mode are available. When you use a Cat 5 twisted-pair cable
with RJ45 connectors to connect the RCMS2902-2E1GE-BL, note that the length of the
twisted-pair cable is not longer than 100 m.
Table 8-1 lists the wiring of the RJ45 connectors.
Table 8-1 Wiring of the RJ45 connectors RJ45
PIN No.
1
2
3
4
5
6
7
8
MDI definition
TX+
TX-
RX+
NC
NC
RX-
NC
NC
MDI-X definition
RX+
RX-
TX+
NC
NC
TX-
NC
NC