27
Interface LEDs
Figure 32 SIC-2FXS1FXO panel
Table 37 LED description
LED
Description
LINK/ACT
•
Off: The link is idle.
•
Steady green: The link is being occupied for call connection.
•
Flashing yellow: The link is being occupied for communication.
Interface cables and the connection methods
For more information about FXS/FXO interface cables and the connection methods, see
"
ADSL/BS/FXS/FXO/AM/FCM interface
."
DSIC-4FXS1FXO
Introduction
The 4-port analog subscriber circuit interface module and 1-port voice AT0 loop trunk interface
module (DSIC-4FXS1FXO) serve to access and handle five channels of analog voice signals over
data communication networks.
•
FXS interfaces are analog subscriber line interfaces that provide ordinary analog telephone and
fax access and also can connect AT0 loop trunks of exchanges.
•
FXO interfaces are loop trunk interfaces that provide access of common subscriber lines of
exchanges.
Interface specifications
Table 38 Interface specifications
Item Description
Connector type
RJ-11
Number of connectors
4 FXS interfaces
1 FXO interface
Interface standard
•
Supports subscriber circuit interface (FXS), compliant with ITU Q.512
•
Supports loop trunk interface (FXO), compliant with ITU Q.552
•
Over-current and over-voltage protection compliant with ITU K.20
Cable type
Telephone cable with ferrite core
Dial-up mode
Supports DTMF, compliant with GB3378, but does not support pulse dial-up.
Bandwidth
300 Hz to 3400 Hz
Summary of Contents for DSIC-9FSW
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