A-10
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Appendix A
Cabling Summary
External Alarm Cabling
External Alarm Cabling
This cable (see Table A-19) connects network alarm outputs to the LM-BNM alarm output connector
only. Table A-20 lists the pinouts for the network alarm outputs.
Table A-19 External Alarm Cabling
Cable Parameter
Description
Interface
Dry-contact relay closure
Wire
24 AWG, shielded, 6-pair
Connector
DB-15, subminiature, male
Table A-20 Network Alarm Pin Assignments
Pin No.
Alarm
Description
1
Audible—major
Normally open
2
Common
9
Normally closed
4
Visual—major
Normally open
5
Common
12
Normally closed
7
unused
n.c.
8
unused
n.c.
3
Audible—minor
Normally open
11
Common
10
Normally closed
6
Visual—minor
Normally open
14
Common
13
Normally closed
15
unused
n.c.