H3C Technologies H3C MSR 50 - Manual (Page 75)

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Figure 2-70 Crossover ISDN S/T cable
Connecting the interface cable
z
If outdoor cabling is involved, you need to install a lightning arrester at the input end of the ISDN
BRI S/T interface cable to avoid lightning strike.
z
When connecting the interface cable to the interface, pay attention to the mark on the interface to
avoid wrong insertion, which may damage the interface module or even the router host.
Step1 Determine the operating mode of the BSV interface. If the interface is to be connected to an ISDN
network, it should operate in user mode; if the interface is to be connected to a TE device (a digital
phone or another BSV interface in user mode for example), the interface should operate in network
mode.
Step2 Connect the cable.
1) To connect the interface module to an ISDN network, identify the type of the ISDN line provided by
your telecommunications service provider.
z
If the line is an ISDN U-interface line, use an NT1 for conversion. Insert one end of the
straight-through S/T interface cable into the S/T interface of the NT1, and the other end into the
BSV interface of the SIC-1BSV/SIC-2BSV interface module.
z
If the line is an ISDN S/T interface line, directly connect the cable to the BSV interface of the
SIC-1BSV/SIC-2BSV interface module.
2) To connect the interface module to a TE device, use a crossover S/T interface cable. Connect the
RJ-45 plug at one end of the cable to the BSV interface, the RJ-45 receptacle to a straight-through
S/T interface cable, and then the straight-through cable to the TE device.
SIC-1VE1
Introduction
1-port E1 voice interface module (SIC-1VE1) can handle dense voice signals in VoIP system. It
provides a CE1/PRI/R2 port, allowing the access of 30 channels of voice signals.