3Com MSR 50, MSR 30, MSR 20 8T1 Module, Interface attributes of MIM-IMA-4T1/MIM-IMA-8T1, AAL5

134CHAPTER 3: MULTIFUNCTIONAL INTERFACE MODULES

Step 2: Insert the DB68 connector at one end of the 4E1/8E1 conversion cable to the DB68 interface on the MIM-IMA-4E1/MIM-IMA-8E1 module, and fasten the cable retaining screws.

Step 3: Identify the sequence numbers of the connectors at the other end of the 4E1/8E1 conversion cable and connect one connector (or a pair of connectors) to the peer device.

Step 4: Power on the router. Check the status of the LINK LED on the MIM-IMA-4E1/ MIM-IMA-8E1 module panel. OFF means the line has problem and signal is out of synchronization. In this case, please check the line.

MIM-IMA-4T1/MIM-IM

A-8T1 Module

Introduction The 4-port/8-port T1 ATM inverse multiplexing interface module (MIM-IMA-4T1/MIM-IMA-8T1) provides four/eight T1 interfaces that support the IMA technology. Their network application is similar to that of the MIM-IMA-4E1/MIM-IMA-8E1 module.

Interface Attributes The following table describes the interface attributes of the

MIM-IMA-4T1/MIM-IMA-8T1 module.

Table 92 Interface attributes of MIM-IMA-4T1/MIM-IMA-8T1

	Description
Attribute	MIM-IMA-4T1	MIM-IMA-8T1
Connector	DB68
Number of connectors	1
Interface standard	ITU-G.703, ITU-G.704
Cable type	4T1 conversion cable	8T1 conversion cable
	(100-ohm straight-through	(100-ohm
	shielded)	straight-through shielded)
Max transmission distance	150 m (492.1 ft.)
Operating mode	ATM T1 independent link/IMA bundle mode
Supported service	AAL5
Protocol	PPPoA, PPPoEoA, IPoA, IPoEoA
Transmission rate	CBR/VBR-rt/VBR-nrt/UBR

Interface LEDs The following figures illustrate the MIM-IMA-4T1 and MIM-IMA-8T1 panels.

Figure 152 MIM-IMA-4T1 panel