3Com Router Module Guide
Chapter 3 Multifunctional Interface Modules
3-41
Step 4: Connect the E1 cable to the device to be connected.
Step 5: Power on the Router, and check the LEDs of the corresponding slot on the
front panel: ON means that the MIM is operating normally and OFF means that the
POST of the MIM has failed. In the latter case, please contact your agent;
Step 6: Check the behavior of the LINK LED on the module panel. It is OFF when fault
has occurred on the link and signal is out of synchronization. In this case, please
check the link.
3.9 Router 4-Port ISDN-S/T MIM Module
3.9.1 Introduction
4-port ISDN BRI interface module (Router 4-Port ISDN-S/T MIM) serves to
transmit/receive and handle four channels of data streams on the ISDN BRI S/T
interface.
Router 4-Port ISDN-S/T MIM can work in dialup mode and leased line service mode.
3.9.2 Interface Attributes
The interface attributes of Router 4-Port ISDN-S/T MIM are given in the following
figure:
Table 3-23
Interface attributes of Router 4-Port ISDN-S/T MIM
Attribute
Description
Connector RJ-45
Number of connectors
4
Cable
ISDN S/T cable
Protocols and standards
ITU-T I.430, Q.921, Q.931 compliant
Operating mode
1) ISDN dialup
2) ISDN leased line
Services supported
1) ISDN
2) Supplementary ISDN services
3) Multi-user number
4) Sub-address
5) Backup
