54
Interface LEDs
Figure 56 MIM-IMA-8E1 (75-ohm) panel
Table 84 LED description
LINK/ACT
• On means carrier signal has been received.
• Flashing means data is being received or/and transmitted.
• Off means no carrier signal has been received.
LP/AL
• On means the interface is in a loopback.
• Flashing means an AIS, LFA, or RAI alarm signal is present.
• Off means no loopback or alarm is present.
Note:
AIS = Alarm indication signal; LFA = loss of frame alignment; RAI = Remote alarm indication
Interface cables and connection methods
For more information about E1 interface cables, see "E1 interface."
MIM-IMA-4T1
Introduction
The 4-port ATM inverse multiplexing interface module (MIM-IMA-4T1) provides four/eight T1
interfaces that support the IMA technology. Their network application is similar to the
MIM-IMA-4E1/MIM-IMA-8E1 module.
Interface specifications
Table 85 Interface specifications
Connector DB68
Number of connectors 1
Interface standard ITU-G.703, ITU-G.704
Cable type 4T1 conversion cable (100-ohm straight-through shielded)
Max transmission distance 150 m (492.1 ft)
Operating mode ATM T1 independent link/IMA bundle mode
Supported service AAL5
Protocol PPPoA, PPPoEoA, IPoA, IPoEoA
Transmission rate CBR/VBR-rt/VBR-nrt/UBR
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