3Com Router 5000 and Router 6000 v2.41
Module Guide
Chapter 3
Multifunctional Interface Modules (Router 5000)
3-55
may due to the host or the Router NDEC2 Encryption Accelerator MIM, contact our
agents for support.
3.14.1 Introduction
The Router 4-Port E1 IMA MIM interface card provides four E1 interfaces that support
inverse multiplexing for ATM (IMA) technology. The IMA technology is a method to
multiplex many low-speed links to one high-speed ATM cell flow: the transmission end
splits the cell flow of the ATM set to many low-speed E1 links, and the remote end
multiplexes these low-speed E1 links to one single cell flow. This technology is
cost-effective and flexible for application and mainly used in network applications that
transmit ATM cell through plesiochronous digital hierarchy (PDH) network.
3.14.2 Appearance of the Interface Card
The following figure shows the appearance of the Router 4-Port E1 IMA MIM interface
card:
Figure 3-59 Appearance of the Router 4-Port E1 IMA MIM interface card
3.14.3 Interface Attributes
The following table describes the Router 4-Port E1 IMA MIM interface attributes:
Table 3-34 Router 4-Port E1 IMA MIM interface attributes
Description
Item
Router 4-Port
E1 IMA MIM
(75-ohm)
Router 4-Port
E1 IMA MIM
(120-ohm)
Connector type DB68
Connector quantity One