Dual-Purpose Ports; Alarm Port; Alarm Ratings - Cisco CGS 2520 Hardware Installation Manual

Appendix B Connector and Cable Specifications

Dual-Purpose Ports

The 10/100/1000 Ethernet ports on the dual-purpose ports use RJ-45 connectors.
Figure B-3

Alarm Port

The alarm port uses an RJ-45 connector. See the
Figure B-4
Pin
1
2
3
4
5
6
7
8

Alarm Ratings

The following lists the alarm rating information
•
•
Note Due the RJ-45 design (connector pin spacing), the alarm output does not support AC voltage.
OL-31444-01
10/100/1000 Port Pinouts
Pin Label
1 TP0+
2 TP0-
3 TP1+
4 TP2+
5 TP2-
6 TP1-
7 TP3+
8 TP3-
Alarm Port Pinouts
Alarm connection
Alarm 1 input
Alarm 2 input
Normally closed
Alarm 3 input
Alarm 4 input
Normally open
Alarm output common
Alarm input common
Alarm Input Electrical Specification: 8V @ 1mA
Alarm Output Electrical Specification: 30V @ 1A
1 2 3 4 5 6 7 8
"Alarm Ports" section on page 1-7
1 2 3 4 5 6 7 8
Cisco CGS 2520 Hardware Installation Guide
Connector Specifications
for more information.
B-3