H3C Technologies H3C MSR 50 - Manual (Page 175)

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Some measures are taken to protect MIM-1VE1 module. Still, you are recommended to install a
special lightning arrester at the input end of its connection cable to obtain better lightning protection
when the cable is led outdoors;
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Read the mark identifying a port before connecting a cable to it, making sure it is the correct port.
Wrong connection tends to damage the MIM and even the router.
Step1 Plug the DB-15 connector of the cable into the DB-15 port on the MIM-1VE1 module and fasten the
screws;
Step2 Connect the RJ-45 connector of the cable to:
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The peer device directly, if the resistance of the port to be connected is 120-ohm, and there is no
need to extend the cable;
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A network interface connector and then the peer device using another E1 120-ohm balanced
twisted pair cable, if the resistance of the port to be connected is 120-ohm, and there is a need to
extend the cable, as illustrated in the following figure.
Figure 3-84 Extending E1 120-ohm balanced twisted pair cable
Router
Voice
Device
DB -15
Network interface
RJ-45 RJ-45
120-ohm balanced
120-ohm E1
trunk cable
twisted pair cable connector
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The peer device using a 75ohm-to-120ohm adapter, if the resistance of the peer device is 75-ohm;
Step3 Check the behavior of the LINK LED on the MIM-1VE1 panel. It is OFF when fault has occurred on the
link. In this case, please check the link.
MIM-1VT1 Module
Introduction
1-port T1 voice interface module (MIM-1VT1) can handle dense voice signals in VoIP system.
MIM-1VT1 module is structured in the form of board plus VCPM module plus VPM strip. It provides a
CT1/PRI port, allowing the access of 24 channels of voice signals.