We are moving to TIA-606-B for labeling. I have read most of the TIA-606-B standard. Some parts I have only skimmed, while others I have studied in depth.
I do not understand the rationale behind the identifiers for Cabling Subsystem 1 links (formerly known as horizontal links).
The standard has this to say (TIA-606-B, section 188.8.131.52):
For TIA-606-A compatible administration systems, the Cabling Subsystem 1 link identifier shall have a format of either: f1s1.x1y1-r1:P1 / f2s2.x2y2-r2:P2 (Cabling Subsystem 1 link terminated on patch panels on both ends) or fs-an (Cabling Subsystem 1 terminated on a work area outlet)
f1s1.x1y1-r1:P1 / f2s2.x2y2-r2:P2 format makes sense to me. You have both a near-end and far-end identifier. You have floor, space, and XY grid coordinates. You know where the cable should be connected both ends.
Where it gets weird to me is the
fs-an format for cables terminated on a work area outlet. Because it is terminated on an outlet, I no longer care about having both near-end and far-end identifiers? How am I supposed to locate the other end of the cable in a warehouse the size of two football fields?
Am I misinterpreting the TIA-606-B standard as it applies to Cabling Subsystem 1 links? What is the proper format for the identifier?
What follows is not part of the question - it is a definition of the
fs-an is defined as follows:
fs= the TS identifier for the location of the patch panel or termination block on which the cable terminates. This portion of the identifier is optional for a class 1 administration system limited to a single equipment room or an administration system limited to a single computer room.
a= one or two alpha characters uniquely identifying a single patch panel, a group of patch panels with sequentially numbered ports, a termination block, or a group of termination blocks, serving as part of the horizontal cross-connect.
n= two to four numeric characters designating the port on a patch panel, or the section of a termination block on which a Cabling Subsystem 1 link is terminated in the TS. Enough numeric characters must be used for this portion of the identifier to accommodate all Cabling Subsystem 1 links in a distributor.