H3C Technologies H3C MSR 50 - Manual (Page 71)

2-51
DSIC-4FXS1FXO
Introduction
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. Four FXS interfaces and one FXO interface are available on a
DSIC-2FXS1FXO module.
z
FXS interfaces are analog subscriber line interfaces that provide ordinary analog telephone and fax
access and also can connect AT0 loop trunks of exchanges;
z
FXO interfaces are loop trunk interfaces that provide access of common subscriber lines of
exchanges.
Interface attributes
Table 2-40 Interface attributes of the DSIC-4FXS1FXO.
Attribute Description
Connector type RJ-11
Number of connectors
4 FXS interfaces
1 FXO interface
Interface standard
z
Supports subscriber circuit interface (FXS), compliant with ITU Q.512
z
Supports loop trunk interface (FXO), compliant with ITU Q.552
z 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
Interface LEDs
The following table shows the DSIC-4FXS1FXO panel.
Figure 2-65 DSIC-4FXS1FXO panel
The following table describes the LEDs on the DSIC-4FXS1FXO panel.
Table 2-41 Description of the LEDs on the DSIC-4FXS1FXO panel
LED Description
LINK/ACT
z
OFF means the link is idle.
z ON (Green) means the link is being occupied for call connection.
z Blinking (Yellow) means the link is being occupied for communication.