
Pin Assignments
Console RJ-45 Port Pin Assignment Ethernet RJ-45 Port Pin Assignment
Pin Number
Signal
Pin Number
Signal
3
Transmit Data
1
TPTX+
4
Signal Ground
2
TPTX+
5
Signal Ground
3
TPRX+
6
Receive Data
4
TPRX+
5
Chassis GND
6
Chassis GND
Alarm Relay Connector
Pin Number
Signal
Description
3
Alarm Fuse
Normal Close (left)
4
Alarm Fuse
Common (middle)
5
Alarm Fuse
Normal Open (right)
DC Power Connector
Pin Number
Signal
Description
1 (Left)
+V
+DC Return
2 (Right)
-V
-DC 24/28 V
Chapter 1 Introduction
TC8518 Product Description
TC8518 Rev 2.2 User Manual
1-13
T1/E1 RJ48 Line Connector
Pin Number
Signal
Signal Direction
1
Receive Ring
Input to TC8518
2
Receive Tip
Input to TC8518
4
Transmit Ring
Output from TC8518
5
Transmit Tip
Output from TC8518
7
Unassigned