3Com 3C13886 Installation Guide - Page 99

ROUTER 4-PORT E1 IMA MIM, Introduction, Appearance of the Interface Card, Interface Attributes

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3Com Router Module Guide Chapter 3 Multifunctional Interface Modules 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 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 ROUTER 4-PORT E1 IMA 4-PORT E1 IMA MIM (75-ohm) MIM (120-ohm) Connector type DB68 3-55

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3Com Router Module Guide
Chapter 3
Multifunctional Interface Modules
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