Cabletron Systems SFCS-1000 manual 8 155 Mbps OC-3c/STM-1 SM Module, Connectors Line Encoding

Hardware Specifications

C.2.8 155 Mbps OC-3c/STM-1 SM Module

The following specifications apply to network modules NM-4/155SMSRC and NM-4/155SMLRC:

Description	Specification
Port Capacity	Four SONET/SDH ports per module
Data Rate	155.52 Mbps
Output Buffer	13,312 cell capacity
Media	Short or long reach single mode fiber
Max. Line Length	~2 km (short reach); ~40 km (long reach)
Connectors	FC
Line Encoding	Non-Return to Zero (NRZ)
Framing	STS-3c/STM-1
Clock Accuracy	±20 ppm
Timing	Primary and secondary 8kHz reference from
	internal (default) or network
Loopbacks	Transmit and receive loopbacks
Power - Short Reach	-8 to -15 dBm transmit power, -8 to -23 dBm
	receive sensitivity, 0 to 8 dB path attenuation
Power - Long Reach	0 to -5 dBm transmit power, -10 to -34 dBm
	receive sensitivity, 10 to 29 dB path attenuation
Core Diameter	10 ∝m
Fiber Diameter	125 ∝m
Wavelength	1310 nm
Statistics/Alarms	SONET/SDH statistics include Loss of Signal
	(LOS), Loss of Frame (LOF), Loss of Pointer
	(LOP), Far End Block Errors (FEBE), Alarm
	Indication Signal (AIS), Far End Receive Fail-
	ure (FERF), Yellow Alarm, Bit Interleaved Par-
	ity errors (Line BIP-24, Section BIP-8, Path
	BIP-8), Header Check Sequence errors (HCS)
Compliance	ATM Forum STS-3c UNI v3.1, ITU-T I.432,
	ANSI T1E1.2/93-020, T1S1/92-185, ITU-T
	G.957, Bellcore TR-NWT-000253

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