Optical PLMs and Power Requirements
OC-48 PLMs
A-7
PN 76.8820IM30-A
Tellabs 8820 Multi-service Switch Router System Installation
OC-48 PLMs
The OC-48/STM-16 PLM
is a single-port STS-48/STM-16 module that can be
plugged into any of the four slots on the 8820 MSR.
.
Faceplate
Detail
❑
Four independent 2.488Gbps SONET/SDH STS-48/STM-
16 ports over single-mode fiber, short-reach (2Km),
intermediate-reach (15Km), or long-reach (80 Km) with
LC (SMF) duplex connector
❑
Channelized OC-48/STM-16 (up to 48 DS3/STS-1
channels per port), or concatenated OC-48c/STM-16c
(one STS-48/STM-16 channel per port)
❑
PPP/ATM/FR protocol over SONET/SDH per port
❑
Per-channel ATM cell or POS frame payload
❑
SONET/SDH-compliant with Bellcore GR-253, ITU G.707,
and ANSI T1.105-1995
Figure A-3
OC-48/STM-16 PLM Faceplate
Table A-6
OC-48 PLM Optical Power Requirements
Description
Application
Connector
Avg Launch
Power (dBm)
Rx Saturation to Rx
Sensitivity (dBm)
Wavelength
(nm)
Distance
(m)
OC-48 MS SMF SR
SR-1
LC
-10 to -3
-3 to -18
1266 to 1360
2K
OC-48C MS SMF SR
SR-1
LC
-10 to -3
-3 to -18
1266 to 1360
2K
OC-48 MS SMF IR
IR-1
LC
-5 to 0
0 to -18
1266 to 1360
15K
OC-48C MS SMF IR
IR-1
LC
-5 to 0
0 to -18
1266 to 1360
15K
OC-48 MS SMF LR-1
LR-1
LC
-2 to 3
-9 to -27
1280 to 1335
40K
OC-48C MS SMF LR-1
LR-1
LC
-2 to 3
-9 to -27
1280 to 1335
40K
OC-48 MS SMF LR-2
LR-2
LC
-2 to 3
-9 to -28
1500 to 1580
80K
OC-48C MS SMF LR-2
LR-2
LC
-2 to 3
-9 to -28
1500 to 1580
80K
PLM Status
PLM Port Status