Installing the interface modules 41CAUTIONRisk of equipment damageAlways handle interface modules by the edges, or use thelevers, where applicable.CAUTIONACHTUNGRisiko eines GeräteschadensBerühren Sie Interfacemodule immer an den Rändern, oderverwenden Sie die Hebel, sofern vorhanden.Prerequisites• Ensure you have a Phillips #2 screwdriver.Installing a Small ModuleUse the procedure in this section to install a Small Module in the SecureRouter 4134. You can install Small Modules in slots 1, 2, 3, and 4.ATTENTIONSlot 2 of the Secure Router 4134 supports only one port of any WAN data SmallModule. If you install a 2-port Small Module in Slot 2, and use the Small Modulefor data connections, one port only is functional (port 1).This limitation also applies to the 2-port T1/E1 and ISDN BRI Small Modules ifthey are configured for voice traffic: only port 2/1 is functional. This limitationdoes not apply to FXS or FXO voice modules.If you are working with 2- or 4-port FXS or FXO Small Modules, ensureyou read the safety messages related to the FXS and FXO interfacemodules. See “Foreign Exchange Station (FXS) Interface Modules” (page17) and “Foreign Exchange Office (FXO) Interface Modules” (page 18).For instructions to install a Small Module in the Voice Carrier MediumModule, see “Installing a Small Module in the Voice Carrier MediumModule” (page 43).Procedure stepsStep Action1 Use a Phillips screwdriver to remove the slot cover plate from theslot in which you will install the module.2 Align the module with the slot and the slot module guides.3 Slide the module into the chassis until its connector paneltouches the chassis back panel.Nortel Secure Router 4134Quick StartNN47263-100 02.01 Standard18 February 2008Copyright © 2007, 2008 Nortel Networks.