3Com MSR 50, MSR 30, MSR 20 manual MIM-8E1/MIM-8E1-F, Introduction MIM-8E1 module, MIM-8E1-F module

MIM-8E1/MIM-8E1-F Module 89

MIM-8E1/MIM-8E1-F

Module

Introduction MIM-8E1 module

MIM-8E1, the 8-port channelized E1/PRI interface module, transmits, receives, and processes eight channels of E1 data traffic. In addition, you can use the module for other purposes, such as CE1 access and the ISDN PRI function.

MIM-8E1-F module

MIM-8E1-F, the 8-port fractional E1 interface module is different from the

MIM-8E1 module in the sense that:

■The FE1 operating mode supported by the MIM-8E1-F module allows only one n ⋅ 64 kbps bundle to be formed on each interface, where n = 1 to 31. However, an MIM-8E1 module allows arbitrary grouping of 31 channels and therefore multiple bundles.

■The MIM-8E1-F module does not support PRI mode.

n Given a MIM-8E1 module, the system automatically creates a serial interface for each timeslot bundle formed on a controller E1 interface.

Interface Attributes The interface attributes of the MIM-8E1 and the MIM-8E1-F are given in the following table:

Table 50 Interface attributes of the MIM-8E1 and the MIM-8E1-F

	Description
	MIM-8E1/MIM-8E1-F module	MIM-8E1/MIM-8E1-F module
Attribute	(75-ohm)	(120-ohm)
Connector	DB-68
Number of	1
connectors
Interface standard	G.703
Interface rate	2.048 Mbps
Cable type	75-ohm 8E1 conversion cable	120-ohm 8E1 conversion cable
Cable characteristic	75-ohm	120-ohm
impedance
Operating mode	E1, CE1, ISDN PRI (only supported by MIM-8E1)
	FE1 (only supported by MIM-8E1-F)
Supported service	1) Backup
	2) Terminal access service
	3) ISDN PRI (only supported by MIM-8E1)

Interface LEDs MIM-8E1 and MIM-8E1-F panels are similar. The following figures illustrate MIM-8E1 panels.