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3Com Router 5000 and Router 6000 v2.41
Module Guide
Chapter 3
Multifunctional Interface Modules (Router 5000)
3-7
Caution:
z Some measures are taken to protect voice modules. Still, you are recommended to install a special
lightning arrester at the input end of each connection cable to obtain better lightning protection effect
when the cable is led outdoors;
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 As provisioned by Bell V, cables for FXS/FXO/E&M modules do not provide PGND wire. For this
reason, a loop should be formed via the earth ground between the Router and the connected switch.
In practice, the PGND wire of the switch can be connected to the chassis of the Router;
z To ensure the EMC of the whole Router, you should connect the end of the cable with ferrite core to
the Router.
Step 1: Plug one end of the cable into the RJ45 port on Router 2-Port FXS/FXO/E&M;
Step 2: Connect the other end of the cable to:
z Telephone set, fax or AT0 loop trunk of telephone exchange, if you have installed
an FXS module;
z Subscriber line of telephone exchange, if you have installed an FXO module;
z E&M trunk of telephone exchange, if you have installed an E&M module;
Step 3: Power on the Router and check the LEDs for the slot on the front panel of the
Router. Several seconds after the MIM is initialized, all the LEDs will blink once,
meaning it has completed POST and is ready for work. If it fails to pass POST, the
LEDs for it will keep OFF. In this case, contact your agent.
3.2 Router E1 Voice Module
3.2.1 Introduction
Router E1 Voice Module can handle dense voice signals in VoIP system. It can carry
out the VoIP function over E1 lines and transmit both voice and data signals over E1
lines at the same time.
Router E1 Voice Module is structured in the form of board plus daughter card. It
provides a CE1/PRI port, allowing the access of 30 channels of voice signals.
3.2.2 Appearance
The appearance of Router E1 Voice Module is shown in the following figure: