3Com MSR 30, MSR 20, MSR 50 manual Following table describes the LEDs on the MIM-1POS panel

MIM-1POS Module 111

Interface Attributes

Table 71 Interface attributes of the MIM-1POS

Attribute		MIM-1POS
Connector		SFP/LC
Interface		SONET OC-3/SDH STM-1
standard
Number of		1
interfaces
Interface rate		155.52 Mbps
Transmit Type		Multi-mode	Single mode	Single mode	Single mode
ting		short-haul	medium-haul	long-haul	ultra-long haul
optical
	Min.	-19.0 dBm	-15.0 dBm	-5.0 dBm	-5.0 dBm
power
	Max.	-14.0 dBm	-8.0 dBm	0. dBm	0. dBm
Receiver		-30.0 dBm	-28.0 dBm	-34.0 dBm	-34.0 dBm
sensitivity
Overload optical		-14.0 dBm	-7.0 dBm	-9.0 dBm	-10.0 dBm
power
Central		1310 nm	1310 nm	1310 nm	1550 nm
wavelength
Fiber type		62.5/125 μm	9/125 μm single	9/125 μm single	9/125 μm single
		multi-mode	mode	mode	mode
Max.		2 km (1.2 mi.)	15 km (9.32 mi.)	40 km (24.86 mi)	80 km (49.71 mi)
transmission
segment

Interface LEDs The following figure illustrates the MIM-1POS panel:

Figure 123 MIM-1POS panel

The following table describes the LEDs on the MIM-1POS panel:

Table 72 Description of the LEDs on the MIM-1POS panel

LED	Description
LINK	OFF means no link is present; ON means a
	link is present.
ACT	OFF means no data is being transmitted or
	received; blinking means data is being
	received or/and transmitted.

Interface Cable Same as the MIM-1CPOS, the MIM-1POS uses LC fiber-optic connectors and must be connected using fiber-optic with an LC connector.

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

Cable

Step 2: Locate the Rx and Tx fiber-optic interfaces on the module. Use two fibers to connect the MIM-1POS to another device, with Rx to Tx and Tx to Rx.