Cabletron Systems SFCS-200BX - Manual (Page 143)

C-17
Hardware Specifications
The following specifications apply to ports 1, 2, and 3 on network modules
NM-4/155SR3SCC and NM-4/155LR3SCC:
Description Specification
Data Rate 155.52 Mbps
Output Buffer 13,312 cell capacity
Media Multimode fiber
Max. Line Length ~2 km
Connectors SC
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 -14 to -20 dBm transmit power, -14 to -30 dBm
receive sensitivity, 0 to 10 dB path attenuation
Core Diameter 62.5
µ
m
Fiber Diameter 125
µ
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