Network Bulk Cables Io Audio Technologies Network Bulk Cables are available in 1000ft pull boxes and consist of both stranded and solid Cat 5e and Cat 6 cables. The stranded cables feature a foil shield to prevent electromagnetic interference and crosstalk between cables, which is critical when running multiple-category cables together or when they are close to unshielded power and/or industrial control cables. Additionally, the shield provides improved grounding performance when used with grounded RJ45 connectors or keystone jacks. Network bulk cables feature CMR or LSZH (low smoke, zero halogen) flammability ratings and are marked sequentially at 2ft intervals. Io Audio Technologies Network Bulk Cables are designed to meet ANSI/TIA-568-C.2 standards.