NBX Cards and Devices 47■ 10/100 Uplink — This RJ-45 Ethernet connector connects the card toan external LAN.■ Console — This DB-9 connector provides an RS-232 (DCE) TTYterminal connection for maintenance access. For information on howto connect a computer to the Console port, see “Connecting aComputer to a Console Port” on page 196.10BASE-T Uplink Card The 10BASE-T Uplink Card provides eight 10BASE-T Ethernet ports toconnect 3Com Telephones (or other 10BASE-T devices) to the LAN. TheUplink Card replaces the 10BASE-T Hub Card.Figure 14 NBX Uplink Card (3C10370)The NBX 10BASE-T Uplink Card contains these lights and connectors:■ Status Lights (PWR and 1 through 8) — These lights indicate thestatus of power to the hub and the status of the 10BASE-T ports.■ Ethernet Hub Ports (8) — These RJ-45 MDI-X ports connect devicesto the LAN.Analog Terminal Card Each Analog Terminal Card allows connections for up to four analog(2500-series compliant) telephones and Group-3 fax machines. When anAnalog Terminal Card senses that a port is being used for faxtransmission, it switches that port to reliable mode. Unlike voice transfers,which drop packets due to congestion, reliable mode transmissions takeas much time as needed to ensure that there are no lost packets.However, reliable mode also uses twice the bandwidth.Figure 15 NBX Analog Terminal Card (3C10117B-INT)PWR11 2 3 4 5 6 7883C10370 3Com NBX Uplink Card3C10117B-INT 3Com NBX Analog Terminal CardCONSOLE2 3 411 2 3 4NOT FOR TELECOM USE
