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132 CHAPTER 3: MULTIFUNCTIONAL INTERFACE MODULES
Interface LEDs The following figures illustrate the MIM-IMA-4E1 and MIM-IMA-8E1 panels.
Figure 148 MIM-IMA-4E1 (75-ohm) panel
Figure 149 MIM-IMA-8E1 (75-ohm) panel
The LEDs on the MIM-IMA-4E1 panel have the same functionality as those on the
MIM-IMA-8E1 panel. The following table describes these LEDs.
Interface Cable The MIM-IMA-4E1 module provides four E1 ports and uses a 120-ohm or 75-ohm
4E1 conversion cable. The two types of 4E1 conversion cables look similar. Both of
them have a DB68 connector at one end for connecting the router. However, the
Cable type 75-ohm 4E1
conversion cable
75-ohm 8E1
conversion cable
120-ohm 4E1
conversion cable
120-ohm
8E1
conversio
n 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 (ATM adaptation layer 5)
Protocol PPPoA, PPPoEoA, IPoA, IPoEoA
Service type CBR/VBR-rt/VBR-nrt/UBR
Table 90 Interface attributes of the MIM-IMA-4E1/ MIM-IMA-8E1
Attribute
Description
MIM-IM
A-4E1
(75-ohm
)
MIM-IMA-8E1
(75-ohm)
MIM-IMA-4E1
(120-ohm)
MIM-IMA-8E1
(120-ohm)
Table 91 Description of the LEDs on the IMA-4E1/IMA-8E1 panel
LED Description
LINK OFF means no link is present; ON
means a link is present.
ACT OFF means no data is being
transmitted or received. ON means
data is being transmitted or received.