3Com 3C13886 Installation Guide - Page 125

3Com Router Module Guide ACT Chapter 4 OFF means no data is being transmitted or received. Blinking means data is being transmitted and/or received. The following figure shows the Router 8-Port Enhanced Serial FIC panel: Figure 4-9 Router 8-Port Enhanced Serial FIC front panel On the Router 8-Port Enhanced Serial FIC panel, each link corresponds to a LED. ON means a link is present; blinking means data is being transmitted and/or received. 4.3.4 Interface Cable The FIC-SAE cards use synchronous/asynchronous serial interface cables with DB-28 connectors. Before connecting an FIC-SAE card, identify the line properties and then select the proper interface cable from the following ten cable options: z V.24 (RS232) DTE cable: DB-25 plug at the network end z V.24 (RS232) DCE cable: DB-25 receptacle at the network end z V.35 DTE cable: 34PIN plug at the network end z V.35 DCE cable: 34PIN receptacle at the network end z X.21 DTE cable: DB-15 plug at the network end z X.21 DCE cable: DB-15 receptacle at the network end z RS449 DTE cable: DB-37 plug at the network end z RS449 DCE cable: DB37 receptacle at the network end z RS530 DTE cable: DB-25 plug at the network end z RS530 DCE cable: DB25 receptacle at the network end All these cables use a DB-28 connector to connect the router, but the connector at the network end varies with the type of the to-be-connected network. z V.24 DTE cable Figure 4-10 V24 DTE cable 4-16