Color Coding

Contents

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
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