H3C Technologies H3C MSR 50 - Manual (Page 148)

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Interface cable
Interface cables (T1 cables) for MIM-1T1/MIM-2T1/MIM-4T1 and MIM-1T1-F/MIM-2T1-F/MIM-4T1-F
modules are 100-ohm straight-through shielding network cables, as shown in the following figure:
Figure 3-51 T1 cable
In addition, you may use a network interface connector to extend a T1 cable. Both ends of the connector
are RJ-45 jacks that can connect two network cables.
Both T1 cable and network interface connector are optional accessories. Please order them together
with the MIM-1T1/MIM-1T1/MIM-4T1 or MIM-1T1-F/MIM-2T1-F/MIM-4T1-F module. By default, they
are not provided.
For the cable pinouts, see Low-End and Mid-Range Series Routers Cable Manual.
Connecting the interface cable
z
Read the mark identifying a port before you connect a cable to it, making sure it is the correct port.
Wrong connection tends to damage interface modules and even the Router;
z
Some protection measures are taken for MIM-1T1/MIM-2T1/MIM-4T1 module. Still, you are
recommended to install a special lightning arrester at the input end of the cable leading to the
outdoors in order to protect the line against lightning strikes more efficiently.
Step1 Insert one end of a T1 cable into the RJ-45 connector on the T1 or T1-F module;
Step2 Connect the other end of the cable to the device to be connected:
z
directly if the cable is long enough; or
z
after extending the cable if it is not long enough, as shown in the following figure: