Cabletron Systems SFCS-1000 User Manual
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:
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:
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 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
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
155 Mbps UTP
155 Mbps UTP
Pin
Pin
RX+
RX-
RX-
TX+
TX-
TX-
RX+
RX-
RX-
TX+
TX-
TX-