Router 4-Port E1 Ima Fic; Introduction; Interface Attributes - 3Com 3C13701 Module Manual

3Com Router 5000 and Router 6000 v2.41
Module Guide

4.16 Router 4-Port E1 IMA FIC

4.16.1 Introduction

Router 4-Port E1 IMA FIC, the 4port E1 ATM inverse multiplexing interface card
provides four or eight E1 interfaces that support inverse multiplexing for ATM (IMA)
technology.
IMA technology distributes an ATM cell stream over multiple low-speed links on a cell
by cell basis and reassembles the cells into the original stream at the far end. It is a
cost-effective way for you to transmit high-speed ATM cell streams over low-speed
links while allowing for great flexibility.
This technology is common on a PDH network over which ATM cells are transmitted.

4.16.2 Interface Attributes

The following table describes the interface attributes:
Table 4-33 Interface attributes of the Router 4-Port E1 IMA FIC
Attribute
Connector
Number of
connectors
Interface standard
Interface rate
Cable type
Cable characteristic
impedance
Max transmission
distance
Operating mode
Supported service
Protocol
Transmission rate
Chapter 4 Flexible Interface Cards (Router 6000)
Router 4-Port
E1 IMA FIC (75-ohm)
(75-ohm)
DB-68
1
ITU-G.703, ITU-G.704
2.048 Mbps
75-ohm 8E1 conversion cable
75-ohm
500 m (1640.4 feet)
ATM E1 independent link /IMA bundle mode
AAL5
PPPoA, PPPoEoA, IPoA, IPoEoA
CBR/VBR-rt/VBR-nrt/UBR
4-50
Description
Router 4-Port
E1 IMA FIC
(120-ohm)
120-ohm 8E1 conversion cable
120-ohm
150 m (492.1 feet)
(120-ohm)