3Com Router 5000 and Router 6000 v2.41Module Guide Chapter 2 Smart Interface Cards2-29Caution:z You should connect a cable to the port with the correct mark. Misplugging is prone to impair theSIC/MIM and even damage the router.z When the telephone cable is used outdoors, it is recommended that users install a special lightningarrester on the input end of the cable in order to avoid the lightning effects more efficiently.z One end of the telephone cable has a ferrite core. To ensure the compatibility of the Router, usersshould connect the end with the ferrite core to the Router.If the SIC is properly installed, follow these steps to connect the cable:Step 1: Connect the end with the ferrite core to a RJ11 port of FXS/FXO SIC ;Step 2: Insert the other end toz a telephone or fax or the AT0 loop trunk if a Router 1 or 2-Port FXS SIC isinstalled;z a subscriber line of exchange if a Router 1 or 2-Port FXO SIC is installed;Step 3: Power on the Router, and check the LEDs of the corresponding slot on thefront panel: ON means that the SIC is operating normally and OFF means that thePOST of the SIC has failed. In the latter case, please contact your agent.2.8 Router 1-Port SAE SIC2.8.1 IntroductionRouter 1-Port SAE SIC, 1-port enhanced high-speed sync/async serial interface card,provides functions similar to SA, but its serial interfaces support more protocols, suchas RS449, X.21, and RS530.2.8.2 Interface AttributesThe interface attributes of the Router 1-Port SAE SIC are given in the following table:Table 2-18 Interface attributes of the Router 1-Port SAE SICDescriptionAttributeSynchronous AsynchronousConnector DB-28Number of connectors 1Interface standard and V.24 V.35, RS449, X.21, RS530 RS232
