H3C Technologies H3C MSR 50 - Manual (Page 72)

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Interface cable
Connection cables for DSIC-4FXS1FXO are telephone cables with ferrite core. Both ends of the cables
are RJ-11 connectors.
Figure 2-66 DSIC-4FXS1FXO cable
This cable is optional. You need to order it when purchasing a DSIC-4FXS1FX.
Connecting the interface cable
z
Identify an interface correctly before connecting a cable to it. Misplugging may damage the
interface module or the router.
z
When the telephone cable is used outdoors, you are recommended to 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 electromagnetic compatibility of
the router, connect the end with the ferrite core to the router.
If the interface module is properly installed, follow these steps to connect the cable:
Step1 Connect the end with the ferrite core to an RJ-11 port of DSIC-4FXS1FXO;
Step2 Insert the other end to:
z
A telephone or fax or the AT0 loop trunk if an FXS interface is selected;
z
A subscriber line of exchange if an FXO interface is selected.
SIC-1BSV/SIC-2BSV
Introduction
SIC-1BSV/SIC-2BSV is short for 1/2-port ISDN BRI S/T voice interface module, which is mainly used to
process (receive/transmit and compress/decompress) the ISDN interface voice traffic. The interface(s)
on the SIC-1BSV/SIC-2BSV module is (are) ITU-T I.430-compliant, adopting pseudo-ternary coding,
providing 192 Kbps interface rate, and allowing the maximum transmission distance of 1 km (0.6 mi.) in
point-to-point mode. In the upstream direction, the SIC-1BSV/SIC-2BSV module can be connected to a
user interface on an ISDN switch to receive and decompress, compress and transmit ISDN BRI digital
voice traffic. In the downstream direction, the module can be connected to a TE device to forward the