3Com MSR 20, MSR 30, MSR 50 manual MIM-2FXS/MIM-2FXO/ MIM-2E&M and MIM-4FXS/MIM-4FXO/ MIM-4E&M

112CHAPTER 3: MULTIFUNCTIONAL INTERFACE MODULES

Step 3: Check the LINK LED on the MIM-1POS panel: ON means the Rx link is present and OFF means the opposite. Check the line in the second case.

w WARNING: Because invisible laser radiation may be emitted from the aperture of an optical port when no fiber is connected or the dust cap is removed, do not stare into the open aperture.

Replace the dust cap when no fiber is connected to the optical port.

MIM-2FXS/MIM-2FXO/ MIM-2E&M and MIM-4FXS/MIM-4FXO/ MIM-4E&M

Introduction

2/4-port voice subscriber circuit interface module (MIM-2FXS/MIM-4FXS) serves to access and handle 2/4 channels of ordinary analog phone, fax, or AT0 loop trunk of telephone exchange.

2/4-port voice AT0 analog trunk interface module (MIM-2FXO/MIM-4FXO) serves to access and handle 2/4 channels of common user lines of telephone exchange.

2/4-port voice E&M analog trunk interface module (MIM-2E&M/MIM-4E&M) serves to access and handle 2/4 channels of E&M analog trunks.

These modules make it possible to transfer voice signals over data communication networks.

c CAUTION: When connecting a voice MIM, make sure that H3C Series Routers can be connected to an IP network or other LAN.

Interface Attributes The interface attributes of MIM-2FXS/MIM-2FXO/MIM-2E&M and MIM-4FXS/MIM-4FXO/MIM-4E&M modules are given in the following table:

Table 73 Interface attributes of MIM-2FXS/MIM-2FXO/MIM-2E&M and

MIM-4FXS/MIM-4FXO/MIM-4E&M

Attribute	Description
Connector	RJ-45
Number of connectors	2 (MIM-2FXS/MIM-2FXO/MIM-2E&M
	module)
	4 (MIM-4FXS/MIM-4FXO/MIM-4E&M
	module)
Cable	Telephone cable with ferrite core
	E&M trunk (for E&M module, which
	should be made by users depending
	on the actual needs at the site.)