3Com MSR 30 MIM-2VT1 Module, Voice signals, Module as needed, Interface attributes of MIM-2VT1

120CHAPTER 3: MULTIFUNCTIONAL INTERFACE MODULES

■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.

Step 1: Plug the DB-15 connector of the cable into the DB-15 port on the

MIM-2VE1 module and fasten the screws;

Step 2: Connect the RJ-45 connector of the cable to:

■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;

■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 136 Extending E1 120-ohm balanced twisted pair cable

Router

DB -15

RJ-45	RJ-45	Voice
		Device

120-ohm balanced	Network interface	120-ohm E1
twisted pair cable	connector	trunk cable

■The peer device using a 75ohm-to-120ohm adapter, if the resistance of the 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.

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.
n	■ VCPM is provided to users together with MIM-2VT1. Users can select VPM
	module as needed.
	■ 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.
	Table 80 Interface attributes of MIM-2VT1

Attribute	Description
Connector	RJ45
Number of connector	2