3Com MSR 20, MSR 30, MSR 50 manual MIM-1T1/MIM-2T1/MI, 4T1/MIM-1T1-F/MI 2T1-F/MIM-4T1-F Modules

MIM-1T1/MIM-2T1/MIM-4T1/MIM-1T1-F/MIM-2T1-F/MIM-4T1-F Modules 91

Figure 102 120-ohm 8E1 conversion cable

Connecting the Interface

Cable

c CAUTION: Before you connect a port, read its label carefully; a wrong connection can impair the interface module and even damage the device.

You are recommended to install a special lightning arrester at the input end of the interface cable for better lightning protection.

Step 1: Choose an 8E1 conversion cable appropriate to the interface type of the peer device.

■If the interface impedance of the peer device is 75-ohm, use a 75-ohm 8E1 conversion cable.

■If the interface impedance of the peer device is 120-ohm, use a 120-ohm 8E1 conversion cable.

Step 2: Insert the DB-68 connector of the cable to the DB-68 port on the

MIM-8E1/MIM-8E1-F module, and fasten the cable fastening screws.

Step 3: Identify the sequence number of the other end of the

MIM-8E1/MIM-8E1-F conversion cable and connect it with a peer device.

Step 4: Power on the router. 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.

MIM-1T1/MIM-2T1/MI

M-4T1/MIM-1T1-F/MI

M-2T1-F/MIM-4T1-F

Modules

Introduction MIM-1T1/MIM-2T1/MIM-4T1 module

1/2/4-port channelized T1/PRI interface module (MIM-1T1/MIM-2T1/MIM-4T1) serves to transmit/receive and handle T1 data streams, provide CT1 access, and fulfill the function of ISDN PRI. Thereby, one card can be used for multiple purposes.