C-8
Hardware Specifications
C.2.3.1 155 Mbps UTP Pinout Specifications
155 Mbps UTP network modules have a standard RJ-45 female connector and
use RJ-45 network equipment pinouts as illustrated in the table below:
C.2.3.2 Connecting Switches with 155 Mbps UTP Network Modules
When connecting switches using 155 Mbps UTP network modules, you need
to use a category 5 UTP crossover cable with the following specifications:
• Pin 1 to pin 7 in both directions.
• Pin 2 to pin 8 in both directions.
Pin Number Signal
Mnemonic Signal Name
1 RX+ Receive Data +
2 RX- Receive Data -
3 Not Used
4 Not Used
5 Not Used
6 Not Used
7 TX+ Transmit Data +
8 TX- Transmit Data -
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
155 Mbps UTP 155 Mbps UTP
Pin Pin
RX+
RX-
TX+
TX-
RX+
RX-
TX+
TX-