Telecommunications Systems  10BASE-T & StarLAN

10BASE-T is a 10 Mbps system (reference IEEE 802.3) supplying Ethernet from distribution hubs via unshielded twisted pair cabling. This is a logical bus topology with the hubs providing a physical star. While most hubs utilize an 8-position modular jack for individual port connections, some consolidate multiple ports on a 25-pair telco connector which must be broken out into individual ports by the end user. StarLAN is an AT&T LAN available in two versions: 1 Mbps over UTP (reference IEEE 802.3 1BASE-5) and 10 Mbps over UTP or fiber (reference IEEE 802.3 10BASE-T and FOIRL) which utilizes distributed star cabling via daisy chained hubs. Application Diagram - Modular 10BASE-T Interface or StarLAN Component Requirements - Modular 10BASE-T Interface or StarLAN Item #   Description                 Catalog #            Page #    1     Terminal Equipment          Customer Supplied     n/a            w/ Network Interface Card                                  2     Equipment Cord,             C304P24J7DESN          66            7', Black Cat. 3                                           3     Category 3 Link             See Cat 3 Link         20      4     Equipment Cord,             C304P24J12DESN         66            12', Black Cat. 3                                          5     Modular 10BASE-T            Customer Supplied     n/a            or StarLAN Hub