2-5Chapter 2 Installing the Model 5399 Remote Access Concentrator ModuleNortel Networks 5399 Access Switch Hardware Installation GuideThe specific segment connection for the module is determined by thesegment selection DIP switch (described in the next section).Segment Selection DIP SwitchDIP switch S1 on the module (see Figure 2-1) is used to set the defaultsegment selections. Segment selection DIP switch settings are listed inTable 2-2. Turning a DIP switch number ON selects a particular segmentwithin the Ethernet segment bank. For example, turning on DIP switchnumber 1 selects either segment 1 or 7, depending on the position of theEthernet segment bank selector jumper card.When the jumper card is installed between J5 and J21, theprinted circuit card handle is nearest the front of the module. Toinstall the jumper card between J5 and J22, remove the jumpercard, rotate it 180 degrees (so that the printed circuit card handleis nearest the back of the module) and push it onto the pins (seeFigure 2-1).Network management software cannot override the bankselector setting. The setting (segments 1–6 or 7–12) can only beset while the module is outside the chassis.If no DIP switch numbers are turned on, the unit defaults toSegments 1 or 7 (depending on the position of the Ethernetsegment bank selector jumper card ).
