Optical fiber distribution module for holding an optical fiber cord and fiber distribution system using optical fiber cords

An optical fiber cable or a set-type optical fiber cord comprised by a plurality of cord units, each of said cord units having a plurality of optical fiber cords, each of said optical fiber cords comprising:

• an optical fiber cord;
• and
• a sheathing for covering said optical fiber cord, wherein identifying marks and identifying colors are provided on said sheathing, and
• said identifying marks are comprised of one of digits, letters and a combination of digits and letters such that the marks are oriented along the sheathing, and neighboring marks separated at a given spacing are inverted relative to one another, wherein
• said identifying colors provided on said sheathing are different for different cord units, and said identifying marks are different at least within a given cord unit.

An optical fiber distribution system comprising:

• a central-side terminating section for terminating a plurality of first fiber cables connected to communication equipment in a central office;
• a user-side terminating section for terminating a plurality of second fiber cables connected to a plurality of subscriber terminal equipment;
• a cross connecting section for switching any optical fiber of said first fiber cable and/or any optical fiber of said second fiber cable;
• a fiber distributing section for connecting any optical fiber from said center-side terminating section to said cross connecting section;
• and
• a fiber distribution module having a test accessing section for operating said first fiber cable and said second fiber cable, and a fiber switching section for switching input/output ports for operating said test accessing section.

An optical fiber distribution board comprising:

• a central-side terminating section for terminating first optical cable optically connected to communication equipment in a central office;
• a user-side terminating section for terminating second optical cable optically connected to subscriber terminal equipment;
• a cross connecting section for switching connections of any optical fiber of said first optical cable with any optical fiber of said second optical cable;
• a fiber sorting section for accommodating said first optical cable and separating optical fibers to be routed to said cross connecting section from optical fibers to be routed to a fiber storage section;
• and
• a fiber-cord storage section for providing connecting means for optically connecting any optical fiber from said fiber sorting section to any terminal of said cross connecting section.