3Com MSR 30, MSR 20 MIM-1SHL-4W Module, Optical Fiber, Interface attributes of the MIM-1SHL-4W

MIM-1SHL-4W Module 141

■ST: round plug-in fiber-optic connector

■LC: square fiber-optic connector

■MT-RJ: square fiber-optic transceiver connector

Connecting the Interface Step 1: Insert the SFP module into the corresponding slot.

Optical Fiber

Step 2: Locate the Rx and Tx optic interfaces on the module. Use two fiber cables

to connect the MIM-1CPOS to the peer device: Rx to Tx and Tx to Rx.

Step 3: Check the status of the LINK LED for the MIM-1CPOS module: ON means the Rx link is present and OFF means the opposite. In the latter case, check the line.

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-1SHL-4W Module

Introduction The 1-port dual-pair G.SHDSL interface module (MIM-1SHL-4W) adopts trellis coded pulse amplitude modulation (TCPAM) coding and provides symmetric rates up to 4.624 Mbps. The transmission rate of the interface can automatically adapt to line distances and conditions.

Compared with ADSL, G.SHDSL allows farther transmission distance and thus has a wider application scope. It is an alternative to E1/T1 line for high-speed data service access. However, as TCPAM uses the band starting from 0 Hz for data transmission, G.SHDSL cannot share the same line with POTS or ISDN like what ADSL has done.

The MIM-1SHL-4W delivers these features:

■Supporting manual G.SHDSL line activation/deactivation and easy-to-use fault location tools.

■Supporting G.991.2 interface standard and auto-sensing.

■Allowing you to set the dual-pair G.SHDSL interface to operate in dual-pair or single-pair mode.

Interface Attributes

Table 98 Interface attributes of the MIM-1SHL-4W

Attribute	MIM-1SHL-4W
Connector	RJ-11
Number of connectors	1
Interface standard	ITU-T G991.2
	ITU-T G994.1 handshaking