Several states do not require voice and data cable installation techs to be certified or licensed.  This has led to many customers having their cables installed without conforming to industry standards.  Imagine the nightmare this network administrator faces when they need to troubleshoot a connection.

Here is an example of how not to wire a data center:

In the mid-1980s, the Telecommunications Industry Association (TIA) and the Electronic Industries Association (EIA) began developing methods for wiring buildings, with the intent of developing a uniform cabling system that supports multivendor products and environments.  In 1991, the TIA and EIA released the TIA/EIA 568 Commercial Building Telecommunication Cabling standard.  Structured cabling systems are designed by a set of standards specifying hundreds of details on how to install Cat3, Cat5e, Cat6, Cat6a, and Fiber Optic cables.  Experienced technicians understand the benefits of performing a proper data cabling installation.  Some of these benefits include:

1. Construction costs can be reduced by up to 30 percent
2. Moves, Adds, Changes, or Upgrades can be performed more efficiently and customers could realize a savings of up to 40 percent.
3. Troubleshooting is simplified and quicker.  Issues on specific wires are easier to isolate  and fix.

Here are a few examples of data cabling done right:

Tier 1 IP ALWAYS performs voice wiring and data cable installations to comply with industry standards.