The more common network cable category used in offices to date is the Twisted-pair Category 5e cables, also called CAT5e. This was the industry standard for unshielded twisted-pair cables (UTP) for in-home and small business networking.
However as internet services and computers have gotten faster over recent years the latest industry standard for commercial office space has changed and the Cat6 or Cat6A cables are becoming the latest standard. Cat6 cables support more than double the transmission speeds of Cat5e(100mhz). A Cat6 cable will support a minimum frequency of 250mhz and Cat6A will support a frequency of 500mhz.