H3C Technologies H3C MSR 50 - Manual (Page 67)

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voice signals over data communication networks. The differences between SIC-FXS and SIC-FXO are
listed below:
z
SIC-FXS modules are analog subscriber line modules that provide ordinary analog telephone and
fax access and also can connect AT0 loop trunks of exchanges;
z
SIC-FXO modules are loop trunk modules that provide access of common subscriber lines of
exchanges.
Interface attributes
The interface attributes of SIC-1FXS/SIC-1FXO and SIC-2FXS/SIC-2FXO are given in the following
table:
Table 2-36 Interface attributes of SIC-1FXS/SIC-1FXO and SIC-2FXS/SIC-2FXO
Attribute Description
Connector type RJ-11
Number of connectors
1 (SIC-1FXS/SIC-1FXO)
2 (SIC-2FXS/SIC-2FXO)
Interface standard
z Subscriber circuit interface (SIC-1FXS/SIC-2FXS) compliant with ITU
Q.512.
z
Loop trunk interface (SIC-1FXO/SIC-2FXO) compliant with ITU Q.552.
z
Over-current and over-voltage protection compliant with ITU K.20
Cable type Telephone cable with ferrite core.
Dialing mode Supports DTMF, not supports pulse dial-up.
Bandwidth 300 Hz to 3400 Hz
Interface LEDs
z
SIC-1FXS/SIC-1FXO panel
Figure 2-60 SIC-1FXS panel
Figure 2-61 SIC-1FXO panel
z
SIC-2FXS/SIC-2FXO panel