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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 Router 4-Port E1 IMA MIM
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 p
lesiochronous 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