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Interface cables and connection methods
For more information about E1 interface cables, see "E1 interface."
SIC-1VT1
Introduction
The 1-port T1 voice interface module (SIC-1VT1) handles dense voice signals in a VoIP system. It
provides a CT1/PRI/R2 port that can process a maximum of 23 channels of voice signals.
Interface specifications
Table 47 Interface specifications
Connector RJ-45
Number of connector 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 cable)
Operating mode
CT1
ISDN PRI
Services
Backup
Terminal access
ISDN
Interface LEDs
Figure 33 SIC-1VT1 panel
Table 48 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
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