Nematron Pointe Controller - Manual (Page 106)

Chapter 4: System Design and Installation Pointe Controller User Guide
104
4.11.3 10Base-T Connections
Most hardware ports on Ethernet 10Base-T equipment are wired MDI-X (meaning
medium dependent interface crossover) so you can use straight-through cable for
interconnecting the network devices. This allows for proper alignment of
transmitter and receiver circuits according to 10Base-T networking standards. For
hub-to-hub connections, a crossover type cable is commonly required. The figures
below illustrate pin assignment and signal names for straight-through and
crossover type Ethernet patch cables.
4.11.4 Straight-through Patch Cable
A straight-through cable is commonly used to connect Ethernet 10Base-T devices
to a hub. Preassembled patch cables are available from various network product
vendors. RJ45 connectors are attached at both ends of an assembled patch cable.
We recommend using a category 5, UTP cable type for all Pointe Controller
network connections.
4.11.5 Crossover Patch Cable
Crossover type patch cables are used to connect between hubs or switches. This
type of patch cable must also be used for all point-to-point connections, such as a
PC-based controller and Pointe Controller unit. Therefore, it is also called a point-
to-point cable.