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3Com Router 5000 and Router 6000 v2.41
Module Guide
Chapter 4 Flexible Interface Cards (Router 6000)
4-53
Step 3: Identify the sequence number of the other end of the 4E1/8E1 conversion
cable and connect it with the intended device.
Step 4: Power on the router. Check the behavior of the LINK LED for the slot on the
card panel: OFF means that fault has occurred on the line and signal is out of
synchronization. Check the link status.
4.17 Router 4-Port T1 IMA FIC
4.17.1 Introduction
Router 4-Port T1 IMA FIC, the 4-port T1 ATM inverse multiplexing interface card
provides four or eight T1 interfaces that support the IMA technology. Their network
application is similar to that of the Router 4-Port E1 IMA FIC card.
4.17.2 Interface Attributes
The following table describes the interface attributes of the Router 4-Port T1 IMA FIC:
Table 4-35 Interface attributes of the Router 4-Port T1 IMA FIC
Description
Attribute
Router 4-Port T1 IMA FIC
Connector DB-68
Number of
connectors
1
Interface standard ITU-G.703, ITU-G.704
Cable type 8T1 conversion cable
Cable characteristic
impedance
100-ohm
Max transmission
distance
150 m (492.1 feet)
Operating mode ATM T1 independent link/IMA bundle mode
Supported service AAL5
Protocol PPPoA, PPPoEoA, IPoA, IPoEoA
Transmission rate CBR/VBR-rt/VBR-nrt/UBR