B-3

Cisco CGS 2520 Hardware Installation Guide
OL-31444-01
Appendix B Connector and Cable Specifications
Connector Specifications
Dual-Purpose Ports

The 10/100/1000 Ethernet ports on the dual-purpose ports use RJ-45 connectors.

Figure B-3 10/100/1000 Port Pinouts
Alarm Port

The alarm port uses an RJ-45 connector. See the “Alarm Ports” section on page 1-7 for more information.

Figure B-4 Alarm Port Pinouts
Alarm Ratings

The following lists the alarm rating information

• Alarm Input Electrical Specification: 8V @ 1mA
• Alarm Output Electrical Specification: 30V @ 1A
Note Due the RJ-45 design (connector pin spacing), the alarm output does not support AC voltage.
60915
231 45678Pin Label
1
2
3
4
5
6
7
8
TP0+
TP0-
TP1+
TP2+
TP2-
TP1-
TP3+
TP3-
207434
231 45678Pin Alarm connection
1
2
3
4
5
6
7
8
Alarm 1 input
Alarm 2 input
Normally closed
Alarm 3 input
Alarm 4 input
Normally open
Alarm output common
Alarm input common