Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
Chapter 3 Multifunctional Interface Modules
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3.18.5 Connecting the Interface Cable
Caution:
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Some measures are taken to protect MIM-2FXS/MIM-2FXO/MIM-2E&M and
MIM-4FXS/MIM-4FXO/MIM-4E&M. 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;
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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 interface modules and even
the Router.
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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;
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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 RJ-45 port on 2FXS/2FXO/2E&M;
Step 2: Connect the other end of the cable to:
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Telephone set, fax or AT0 loop trunk of telephone exchange, if you have installed
an FXS module;
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Subscriber line of telephone exchange, if you have installed an FXO module;
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E&M trunk of telephone exchange, if you have installed an E&M module;
3.19 MIM-HNDE Module
3.19.1 Introduction
High Network Data Encryption (MIM-HNDE for short) supports IPSec protocol, multiple
hardware encryption/decryption and hash algorithm to speed up the encryption of the
IP packets, featuring high-performance and high-reliability.
Insert MIM-HNDE module in the MIM slot of a low-end and mid-range modular router.
The main board forwards the IP packets and implements the VPN with encryption
feature which is complemented by encryption card.