(Optical Transmission System)

1
?????????????????????????? (Optical Transmission
System) For Marketing and Sale Staff
???? ??????????
???????????????????? ????????????????????????
?????? ??? ????????? ?????(?????) E-mail
lthanade_at_cattelecom.co.th Tel. 2598, 2906

2
????????????

• ?????????????? 3
• ?????????????????????????? 4
• ?????????????????????????????????????? ???
  29
• ?????????????????????/????????????
  34
• ???? 35

3
?????????????? (Transmission System)
4

?????????????????????????? (Optical Transmission
System)

• ???? PDH
• ???? SONET
• ???? SDH
• ???? DWDM

5
???? PDH(Plesiochronous Digital Hierarchy)

• ????????????????????????????????????????
  ??????????????????????????????????????????????????
  ?????????????????
• ???????????????????????????????????????????
  ?????????????????? 20 ??
• ???????????????????????????????????
  ????????????? ??????????????? ????????????????????
  ???????
• ???? PDH ?????? 3 ??????? ???
• ???????????????????
• ????????????(?????????????????????????)
• ?????????????

6

???? PDH ???????????????????

PDH Hierarchy (North AMERICA)
?????????
???????????????
??????????????(Mbps)
1(DS-1) 24 1.544 2(DS-2) 96
6.312 3(DS-3)
672 44.736 4(DS-4)
4,032 274.176 5(DS-5)
8,064 584.352


7

???? PDH ????????????

PDH Hierarchy (EUROPE)
?????????
???????????????
??????????????(Mbps)
1(E1) 30 2.048 2(E2) 120
8.448 3(E3)
480 34.368 4(E4) 1,920 139.264 5 7,680
565.148


8

???? PDH ??????????????

PDH Hierarchy (JAPAN)
?????????
???????????????
??????????????(Mbps)
1 24 1.544 2 96
6.312 3
480 32.064 4 1,440 97.728 5 5,760 40
0.352


9
???? SONET(Synchronous Optical Network)

• ?????????????????????????????????????????????????
  ??????????????????????????????
• ??????????????????? SONET
• - ???????????????????????????????????
• - ???????????????????????????????????
• - ???????????????????????????????????????????
• ??????????????? ?.?. 2531
• ?????????????????????(STS-1) 51.84 Mbps

10
???? SDH (Synchronous Digital Hierarchy)
DWDM

• ???? SDH ????????????????????????
• ??????????????????? ????????????????????????
• ??????????????????????????? SONET
• ??????????????? ?.?. 2533
• ????????????????????????????????
• ???????????????
• ?????????????????????????????
• 155.52 Mbps (STM-1)

Core Network
SDH
Metro Network
SDH

Access Network

11

???????????? SDH

• ?????????????????????????????
• ?????????????????
• ??????????????????????????
• ????????????????????
• ????????????????????????????????
• ????????????????(???? PDH)
• ?????????????????????????????
• ??????????
• ?????????????????????????????
• ???????????????????????????

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??????????????????????? PDH ??? SDH
????? 2.048 Mb/s 8.448 Mb/s
34.368 Mb/s 139.264 Mb/s
???????????? 1.544 Mb/s 6.312
Mb/s 44.736 Mb/s
??????? 1.544 Mb/s 6.312 Mb/s
32.064 Mb/s 97.728 Mb/s
PDH G.703

• ???????????????????? SDH
• ???????? STM-N (Synchronous Transport Module-N)
• N 1, 4, 16, 64 ?????????????? ITU-T

STM-1 155.520 Mb/s
STM-4 622.080 Mb/s
SDH G.707
STM-16 2,488.320 Mb/s
STM-64 9,953.280 Mb/s
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??????????? SDH

• Terminal Multiplexer (TM) ???????????????????????
  ??????????????
• Add/Drop Multiplexer (ADM)???????????????????????
  ??????
• ??????????????????????????????????????????????????
  ????????
• ????????????????????????????????????
• Regenerator (REG) ??????????????????????????????
  ???????????
• ????????????????????????????????
• Synchronous Digital Cross Connect (SDXC)
  ??????????????????????????????????????????????????
  ?????????????????????????????????
  ????????????????????????? ADM

14
??????? Terminal Multiplexer
2 Mb/s
Aggregate STM-1
TM-1
2 Mb/s
SDH

15
??????? ADM
SDH
STM-1
STM-1
ADM
PDH

16
??????? SDXC
PDH
SDH
Optical, Copper, Microwave, Terminal, MUX
SDXC

Manual Distribution Frame

17
??????????????????????????????? SDH
Point-to-Point
Regenerator
TM
18
?????????????????????????????? SDH