INTRODUCTIONPage 1-3You can upgrade the TRXI-22 and TRXI-42 to twenty-four ports usinga twelve port upgrade kit available from Cabletron Systems(Cabletron Part Number TRXI-24-UGKIT or TRXI-44-UGKIT).The TRXI provides two additional ports for Ring In and Ring Outconnections. These ports support Cabletron’s Token Ring PortInterface Modules (TPIMs). TPIMs provide full repeater functionality.They are not included with the TRXI, but can be ordered separatelyfrom Cabletron. Table 1-2 lists each TPIM.1.4 TRXI FEATURESLocal ManagementLocal Management provides the tools to manage the TRXI and all ofits attached segments. You access Local Management by connecting aDigital Equipment Corporation VT™ 320 series terminal or a PCusing VT320 emulation software to the TRXI’s COM 1 port.LCD and Reset ButtonThe LCD provides status information about the TRXI such as powerup diagnostics, revision levels, serial numbers, and error alerts. TheTRXI also has a Reset Button to initialize the processor. Both the LCDand the Reset Button are located on the front panel of the TRXI.Ring Speed SwitchThe Ring Speed Switch lets you select ring speeds of either 4 Mbps or16 Mbps. The factory default setting is 16 Mbps.LANVIEW LEDsCabletron Systems’ LANVIEW LED Status Monitoring andDiagnostics System is a convenient troubleshooting tool that helps youdiagnose power failures, RI/RO status, cable faults, ring speed, linkproblems, and network activity.COM Port ApplicationsThe front panel COM 1 port supports Local Management applications.Future capabilities for TRXI’s serial ports include an SNMP proxy forUninterruptible Power Supplies (UPS), the Serial Line InternetProtocol (SLIP), and Modem.