Suspension bridge nearby Chain Bridge at Falls of Schuylkill (1808). The footbridge's span was 124 m, although its deck was only 0.45 m wide. Development of wire-cable suspension bridges dates to the temporary simple suspension bridge at Annonay built by Marc Seguin and his brothers in 1822. It spanned only 18 m. The first permanent wire cable suspension bridge was Guillaume Henri Dufour's Saint Antoine Bridge in Geneva of 1823, with two 40 m spans. The first with cables assembled in mid-air in the modern method was Joseph Chaley's Grand Pont Suspendu in Fribourg, in 1834. In the United States, the first
Category 6 cable is characterized to 500 MHz and has improved alien crosstalk characteristics, allowing 10GBASE-T to be run for the same 100 meter maximum distance as previous Ethernet variants. Cat 6 cable can be identified by the printing on the side of the cable sheath. Cable types, connector types and cabling topologies are defined by TIA/EIA-568. Cat 6 patch cables are normally terminated in 8P8C modular connectors. Connectors use either T568A or T568B pin assignments; performance is comparable provided both ends of a cable are terminated identically. If Cat 6 rated patch cables, jacks and connectors are not used with Cat 6