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Interface cables and connection methods
For more information about T1 interface cables and connection methods, see "T1 interface."
SIC-1VE1T1
Introduction
The 1-port E1/T1 voice interface module SIC-1VE1T1 handles dense voice signals in VoIP and FoIP
systems. The E1 module transmits, receives, and processes E1 voice signals. It allows the interface
to operate in CE1 mode or ISDN PRI mode to process a maximum of 30 channels of voice signals.
The T1 module transmits, receives, and processes T1 voice signals. It allows the interface to operate
in CT1 mode or ISDN PRI mode to process a maximum of 23 channels of voice signals.
You can use command lines and a jumper to configure the interface as a 75-ohm E1 interface,
100-ohm T1 interface, or 120-ohm E1 interface. By default, the interface is a 75-ohm E1 interface.
• To configure the interface as a 75-ohm E1 interface, connect the jumper to pins 1 and 2, pins 7
and 8, pins 11 and 12, and pins 13 and 14.
• To configure the interface as a 100-ohm T1 or 120-ohm E1 interface, connect the jumper to pins
1 to 3, pins 5 to 7, pins 9 and 10, and pins 11 to 13.
Figure 34 Jumper connecting methods
Interface specifications
Table 49 Interface specifications
Connector RJ-45
Number of connector 1
Interface standard
• G.703
• G.704
J4
J3
13 11 9 7 5 3 1
14 12 10 8 6 4 2
T1 100 ohm
E1 120 ohm
13 11 9 7 5 3 1
14 12 10 8 6 4 2
E1 75 ohm
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