Identify the station cables

One of the most difficult aspects of installing a phone system is identifing the cables that run from the equipment room, where the phone system is to be installed, to the office's where the phones will be used. Below is an example of what an installer might come across, a rat's nest of wires and cables with almost no designations on what each is used for.
At first sight this can be somewhat daunting, but as long a systematic approach is used the station cables can easily be identified.

The image to the left represents all the pieces normally found in the equipment room where a phone system is installed.

66 Blocks: The rectangular white blocks are called 66 blocks and are the industry standard interface for connecting phone cables and telecommunication equipment.
The 66 block's function is to connect or splice 2 wires together. One wire is terminated on the pins of the first column, then the wire that needs to be spliced is terminated on the pins of the second column. The pins are connected inside the block and thus spliced together.
Another thing to note, station cables are normally terminated on the outside columns of the 66 block and the