Color-coding of termination fields can simplify infrastructure administration and maintenance by making the structure of the cabling more intuitive.
TERMINATION TYPE COLOR TYPICAL APPLICATION |
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Demarcation Point |
orange |
central office connection |
Network Connection |
green |
user side of central office connection |
Common Equipment |
purple |
connections to PBX, mainframe computer, LAN, multiplexer |
Key System |
red |
connections to key telephone systems |
First Level Backbone |
white |
terminations of intrabuilding backbone cable connecting MC to ICs |
Second Level Backbone |
gray |
termination of intrabuilding backbone cable connecting ICs to HCs |
Interbuilding Backbone |
brown |
termination of backbone cable between buildings |
Horizontal |
blue |
terminations of horizontal cable in TSs |
Other |
yellow |
alarms, security, or energy management |