11
Table 20 LED description
LINK/ACT
• On means carrier signal has been received.
• Flashing means data is being transmitted or received.
• 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 neither loopback nor alarm is present.
Note:
AIS = Alarm indication signal; LFA = loss of frame alignment; RAI = Remote alarm indication
Interface cables and connection methods
A 70-to-120-ohm adaptor is required to connect a 120-ohm cable to the 75-ohm SIC-1EPRI. For
more information about E1 interface cables, see "E1 interface."
SIC-1T1-F
Introduction
1-port Fractional T1 interface module provides the following features:
• Transmission/Receiving and handling of T1 data streams.
• Remote loopback and local loopback, facilitating the effective and flexible debugging.
The FT1 operating mode supported by the SIC-1T1-F module allows only one bundle. The time slots
can only be bundled into one n × 56 kbps channel, where n is in the range of 1 to 24.
The SIC-1T1-F does not support the PRI mode.
Interface specifications
Table 21 Interface specifications
Connector type RJ-45
Number of connectors 1
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 standard shielded network cable)
Operating mode FT1
Supported service
• Backup
• Terminal access
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