3Com Router Module Guide
Chapter 4
4-35
BNC connector
SMB connector
BNC connector
SMB connector
BNC connector
SMB connector
BNC connector
SMB connector
BNC connector
SMB connector
Figure 4-34
E3/T3 cable
Note:
The 8.8 ROUTER 1-PORT E3 ATM FIC uses the same type of cables for connection, which are called
E3/T3 cables in this manual.
4.8.5 Connecting the Interface Cable
Caution:
By design, the 8.8 ROUTER 1-PORT E3 ATM FIC is protected against lightning strikes. But when
outdoor cabling is involved, you are recommended to add a special lightning arrester at the input end of
the E3/T3 cable for better protection.
Step 1: Connect the SMB connector of an E3/T3 cable to the Tx port on the 8.8
ROUTER 1-PORT E3 ATM FIC and another end to the Rx port on another device.
Step 2: Connect the SMB connector of another E3/T3 cable to the Rx port on the 8.8
ROUTER 1-PORT E3 ATM FIC and another end to the Tx port on another device.
Step 3: Check the behavior of the LINK LED on the 8.8 ROUTER 1-PORT E3 ATM
FIC panel: OFF means fault occurs on the line and the signal is out of synchronization.
Check the line status.
4.9 ROUTER 1-PORT T3 ATM FIC
4.9.1 Introduction
ROUTER 1-PORT T3 ATM FIC, the 1-port 44Mbps ATM-T3 interface card, provides
these functions:
z
Two ATM cell mapping modes: ADM and PLCP.
z
Scrambling in data transmission.