3Com MSR 50, MSR 30 FIC-1AT3 and another end to the Rx port on another device, Status, Loopback

188CHAPTER 4: FLEXIBLE INTERFACE CARDS

Connecting the Interface
Cable
	CAUTION: By design, the FIC-1AT3 is protected against lightning strikes. But
c when outdoor cabling is involved, you are recommended to add a special lightning
	arrester at the input end of the E3/T3 cable for better protection.
	Step 1: Connect the SMB connector of an E3/T3 cable to the Tx port on the
	FIC-1AT3 and another end to the Rx port on another device.
	Step 2: Connect the SMB connector of another E3/T3 cable to the Rx port on the
	FIC-1AT3 and another end to the Tx port on another device.
	Step 3: Check the behavior of the LINK LED on the FIC-1AT3 panel: OFF means
	fault occurs on the line and the signal is out of synchronization. Check the line
	status.
FIC-1ATM-OC3MM/FIC
-1ATM-OC3SM/
FIC-1ATM-OC3SML
Introduction	Three ATM fiber interface card options are available with your router:
	■ 1-port ATM 155 Mbps multi-mode fiber interface card (FIC-1ATM-OC3MM)
	■ 1-port ATM 155 Mbps single-mode fiber interface card (FIC-1ATM-OC3SM)
	■ 1-port ATM 155 Mbps single-mode long-haul fiber interface card
	(FIC-1ATM-OC3SML)
	They provide the following functions:
	■ Two frame formats: SDH STM-1 and SONET OC-3.
	■ Scrambling in data transmission.
	■ Line clock (when working as DTE interface), and internal clock (when working
	as DCE interface)
	■ Three test measures: local cell loopback, local payload loopback and remote
	loopback.
n	For the ATM interface configuration procedures, refer to H3C MSR 20/30/50 Series
	Routers User Manual.
Interface Attributes	The following table describes the interface attributes of the ATM cards.
	Table 133 Interface attributes of the ATM cards
	Attribute	FIC-1ATM-OC3MM	FIC-1ATM-OC3SM FIC-1ATM-OC3SML
	Fiber-optic connector		SC
	Number of connectors		1
	Interface standard		SONET OC-3/SDH STM-1
	Interface rate		155 Mbps