H3C Technologies H3C MSR 50 - Manual (Page 69)

2-49
z
Connect a cable to the port with the correct mark. Misplugging is prone to impair the SIC/MIM and
even damage the router.
z
When the telephone cable is used outdoors, it is recommended that users install a special lightning
arrester on the input end of the cable in order to avoid the lightning effects more efficiently.
z
One end of the telephone cable has a ferrite core. To ensure the compatibility of the Router, users
should connect the end with the ferrite core to the Router.
If the SIC is properly installed, follow these steps to connect the cable:
Step1 Connect the end with the ferrite core to a RJ-11 port of SIC-FXS/SIC-FXO;
Step2 Insert the other end to
z
A telephone or fax or the AT0 loop trunk if a SIC-1FXS/SIC-2FXS is installed;
z
A subscriber line of exchange if a SIC-1FXO/SIC-2FXO is installed;
SIC-2FXS1FXO
Introduction
2-port analog subscriber circuit interface module and 1-port voice AT0 loop trunk interface module
(SIC-2FXS1FXO) serve to access and handle three channels of analog voice signals over data
communication networks. Two FXS interfaces and one FXO interface are available on a
SIC-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 2-38 Interface attributes of the SIC-2FXS1FXO module
Attribute Description
Connector type RJ-11
Number of connectors
2 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
SIC-2FXS1FXO panel is shown in the following figure: