55
Interface LEDs
Figure 57 MIM-IMA-4T1 panel
Table 86 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 T1 interface cables and connection methods, see "T1 interface."
POS (SDH/SONET) interface module
• MIM-1POS
MIM-1POS
Introduction
The 1-port SDH/SONET interface module (MIM-1POS) provides interface rates up to 155.52 Mbps
(STM-1/OC-3).
The MIM-1POS can use the protocols such as PPP, Frame Relay, and HDLC at the data link layer
and IP at the network layer. It allows direct transmission of packets over SONET/SDH.
Interface specifications
Table 87 Interface specifications
Connector
SFP/LC
Interface standard
SONET OC-3/SDH STM-1
Number of
interfaces
1
Interface rate
155.52 Mbps
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