Cabletron Systems SFCS-200WG ユーザーズマニュアル
C-7
Hardware Specifications
C.2.3 155 Mbps STS-3c/STM-1 UTP Module
The following specifications apply to network modules NM-4/155UTP5EC
and NM-4/155UTP5C:
and NM-4/155UTP5C:
Description
Specification
Port Capacity
Four SONET/SDH ports per module
Data Rate
155.52 Mbps
Output Buffer
2,560 or 13,312 cell capacity
Media
Category 5 Unshielded Twisted Pair (UTP)
Max. Line Length
100 m
Connectors
RJ-45
Line Encoding
Non-Return to Zero (NRZ)
Framing
STS-3c/STM-1
Clock Accuracy
±
20 ppm
Timing
Internal timing or per port network timing
Loopbacks
Transmit and receive loopbacks
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 (HCS) errors
(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 (HCS) errors
Compliance
ATM Forum STS-3c UNI v3.1, ITU-T I.432,
ANSI T1E1.2/93-020, T1S1/92-185, ATM
Forum AF-PHY-0015.000
ANSI T1E1.2/93-020, T1S1/92-185, ATM
Forum AF-PHY-0015.000