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.
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 typically used in PDH
networks to transport ATM cells.
Interface specifications
Table 177 Interface specifications
Item
Connector
Number of connectors
Interface standard
Interface rate
Cable type
Max transmission
distance
Operating mode
Supported service
Protocol
Transmission rate
Interface LEDs
Figure 132 75-ohm FIC-IMA-4E1 panel
Figure 133 75-ohm FIC-IMA-8E1 panel
Specification
FIC-IMA-4E1 (75-ohm)
D68
1
ITU-G.703, ITU-G.704
2.048 Mbps
75-ohm 4E1 conversion cable
500 m (1640.4 ft)
ATM E1 independent link/IMA bundle mode
AAL5
PPPoA, PPPoEoA, IPoA, IPoEoA
CBR/VBR-rt/VBR-nrt/UBR
110
FIC-IMA-8E1 (75-ohm)
75-ohm 8E1 conversion cable
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