120
Interface LEDs
Figure 143 FIC-8E1 (75-ohm) panel
Table 194 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."
FIC-4T1-F
Introduction
The FT1 operating mode supported by the T1-F modules allows only one n × 64 kbps or n × 56 kbps
bundle to be formed on each interface, where n = 1 to 24. The FIC-4T1-F modules do not support the
PRI mode.
Interface specifications
Table 195 Interface specifications
Connector
RJ-45
Number of connectors
• 4
Interface standard
• G.703/T1 102
• G.704
• AT&T TR 54016
• AT&T TR 62411
• ANSI T1.403
Interface rate
1.544 Mbps
Cable type
T1 cable (100-ohm straight-through shielded cable)
Operating mode
FT1
Supported service
• Backup
• Leased line
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