Cabletron Systems MMAC-Plus 9A000, User Manual

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C-18
Hardware Specifications
C.2.10 622 Mbps OC-12c/STM-4c SM Module
The following specifications apply to network module NM-1/622SMIRC:
Description Specification
Port Capacity One SONET/SDH port per module
Data Rate 622.08 Mbps
Output Buffer 13,312 cell capacity
Media Single mode fiber
Max. Line Length ~14 km
Connectors FC
Line Encoding Non-Return to Zero (NRZ)
Framing STS-12c/STM-4c
Clock Accuracy
±
20 ppm
Timing Primary and secondary 8kHz reference from
internal (default) or network
Loopbacks Transmit and receive loopbacks
Power -8 to -15 dBm transmit power, -8 to -28 dBm
receive sensitivity, 0 to 13 dB path attenuation
Core Diameter 10
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),
cells received (RxCells), cells transmitted
(TxCells)
Compliance ATM Forum STS-12c UNI v3.1, ITU-T I.432,
ANSI T1E1.2/93-020, T1S1/92-185, ITU-T
G.957, Bellcore TR-NWT-000253