Allied Telesyn AT 3016TR

Allied Telesyn AT 3016TR ... specifically designed with an uplink (cascading) capability supporting a Media Dependent Interface (MDI/MDI-X) crossover switch. As many as four hubs can be cascaded together to form a specific workgroup containing as many as 90 nodes.

These Workgroup Hubs also contain two additional ports for attachment to other Local Area Network (LAN) media. One such port is configured with an Attachment Unit Interface (AUI), which with an external transceiver can provide attachment to thick coax, twisted pair or fiber optic media. The other port is configured with a Bayonet Nut Couple (BNC) connection for direct attachment to thin coax media. An external switch is provided to allow manual termination of the 10Base-2 port. Either the AUI port or the BNC port may be selected or used simultaneously. These hubs utilize the latest technologies including custom ASIC and SMT, providing enhanced functionality, increased reliability and improved price and performance. These Workgroup Hubs provide packet regeneration, resulting in a higher performance network. Packet regeneration includes regenerating preamble, retiming the data packets and extending collision fragments to ensure collision enforcement by all nodes. These hubs support IEEE-compliant features along with additional functions, which further ensure fault protection and proper network operation. The IEEE 802.3 defined link integrity test function continually monitors the twisted pair to ensure link continuity of the receive pair between the user node and the hubs. Each segment is equipped with an automatic partitioning capability in which the segment automatically partitions after repeated collisions are detected. The hubs also support jabber lock-up protection. This function ensures isolation of faulty segments resulting from transmitted packets that exceed the maximum packet length. Network diagnostics are provided to aid in troubleshooting and fault isolation. Each network segment has two LEDs, packet "Receive" and "Port OK." In addition, there are three central LEDs indicating "Activity, " "Collision" and "Power" for the hubs. These CentreCOM Workgroup Hubs are designed for ease of rack mount installation or standalone use. All port connections, LEDs, status indicators and Power inputs are located on the front panel. The hubs are enclosed in an all aluminum chassis for rugged environmental protection and enhanced EMI shielding; the hubs satisfy the shielding.