Cabletron Systems SFCS-200BX User Manual

C-16

Hardware Specifications

C.2.9 155 Mbps OC-3c/STM-1 3MM/1SM Module

The 155 Mbps OC-3c/STM-1 3MM/1SM network module contains one
SONET/SDH single mode port (port 4) and three SONET/SDH multimode
ports (ports 1, 2, and 3) per module.

The following specifications apply to port 4 on network modules NM-
4/155SR3SCC and NM-4/155LR3SCC:

Description

Specification

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); ~40km (long reach)

Connectors

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 dBm path attenuation

Core Diameter

Fiber Diameter

125

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