3Com Router Module Guide
Chapter 3 Multifunctional Interface Modules
3-28
Figure 3-26
2-port panel
Figure 3-27
4-port panel
The following table describes the LEDs on the panel:
Table 3-18
LEDs on the panel
LED
Description
LINK
OFF means no link is present; ON means a link is present.
ACT
OFF means no data is being transmitted or received. Blinking means
data is being transmitted and/or received.
3.7.4 Interface Cable
The MIM cards use synchronous/asynchronous serial interface cables with DB-28
connectors.
Before connecting a 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