3com MSR 50 Manual De Usuario
120
C
HAPTER
3: M
ULTIFUNCTIONAL
I
NTERFACE
M
ODULES
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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 the MIM and even
the Router.
it is the correct port. Wrong connection tends to damage the MIM and even
the Router.
Step 1: Plug the DB-15 connector of the cable into the DB-15 port on the
MIM-2VE1 module and fasten the screws;
MIM-2VE1 module and fasten the screws;
Step 2: 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;
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.
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 136 Extending E1 120-ohm balanced twisted pair cable
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The peer device using a 75ohm-to-120ohm adapter, if the resistance of the
peer device is 75-ohm;
peer device is 75-ohm;
Step 3: Check the behavior of the LINK LED on the MIM-2VE1 panel. It is OFF
when fault has occurred on the link. In this case, please check the link.
when fault has occurred on the link. In this case, please check the link.
MIM-2VT1 Module
Introduction
2-port T1 voice interface module (MIM-2VT1) can handle dense voice signals in
VoIP system. It provides two CT1/PRI/ ports, allowing the access of 48 channels of
voice signals.
VoIP system. It provides two CT1/PRI/ ports, allowing the access of 48 channels of
voice signals.
n
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VCPM is provided to users together with MIM-2VT1. Users can select VPM
module as needed.
module as needed.
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VPM module is installed on the main board of MIM-2VT1.
Interface Attributes
The interface attributes of MIM-2VT1 are given in the following table.
Router
Voice
Device
DB -15
Network interface
RJ-45
RJ-45
120-ohm balanced
120-ohm E1
trunk cable
trunk cable
twisted pair cable
connector
Table 80 Interface attributes of MIM-2VT1
Attribute Description
Connector RJ45
Number of connector
2