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Fic-ima-4e1/fic-ima-8e1, Introduction, Interface attributes – H3C Technologies H3C MSR 50 User Manual

Page 207: Interface leds

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FIC-IMA-4E1/FIC-IMA-8E1

Introduction

The 4-port/8-port E1 ATM inverse multiplexing interface module (FIC-IMA-4E1/FIC-IMA-8E1) provides
four/eight E1 interfaces that support the IMA (inverse multiplexing for ATM) technology.

The IMA technology combines multiple low-speed links into a group to support a high-speed ATM cell
stream: It distributes an ATM cell stream over multiple low-speed E1 links on cell by cell basis at the
transmission end and reassembles the cells on the low-speed E1 links into the original stream at the far
end. This technology provides a scalable and cost-effective solution, and is commonly used in PDH
networks to transport ATM cells.

Interface attributes

The following table describes the interface attributes of the FIC-IMA-4E1/FIC-IMA-8E1:

Table 4-11 Interface attributes of the FIC-IMA-4E1/FIC-IMA-8E1

Description

Attribute

FIC-IMA-4E1

(75-ohm)

FIC-IMA-8E1

(75-ohm)

FIC-IMA-4E1

(120-ohm)

FIC-IMA-8E1

(120-ohm)

Connector DB-68

Number of connectors

1

Interface standard

ITU-G.703, ITU-G.704

Interface rate

2.048 Mbps

Cable type

75-ohm 4E1
conversion cable

75-ohm 8E1
conversion cable

120-ohm 4E1
conversion cable

120-ohm 8E1
conversion cable

Max transmission
distance

500 m (1640.4 ft.)

150 m (492.1 ft.)

Operating mode

ATM E1 independent link/IMA bundle mode

Supported service

AAL5

Protocol

PPPoA, PPPoEoA, IPoA, IPoEoA

Transmission rate

CBR/VBR-rt/VBR-nrt/UBR

Interface LEDs

The following figures illustrate the FIC-IMA-4E1 and FIC-IMA-8E1 (75-ohm) panels:

Figure 4-14 75-ohm FIC-IMA-4E1 panel

This manual is related to the following products: