?????? ?IT??????????? ??IT????? ????????????????

1
?????? ?IT???????????
??IT????? ????????????????

• October 16, 2002
• ? ??
• t-tsuji_at_nissho-ele.co.jp

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AGENDA

• 1.NE???????????BBIP?????????
• 2.????????????????????
• ｷDWDM
• ｷVoIP??????????
• 3.??????ｷ????????????????????????
• ｷ????????
• ｷ???????????
• ｷ????
• ????ｷ????????
• ????????????
• ?VPN????
• ?Virtual-ISP????
• ｷ????????????????

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NELCO??????????? BBIP?????????
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??????????(NELCO????)

• 1970ｷ80??
• COM/???????
• ??????????
• 1990??
• ??????????????
• ?????ｷ?? ? ?????
• 2000??
• IT?(????????????)
• ??????(???????)????????????(?????)
• ???????? ? ???????ｷ?????? ?
  ????ｷ??????
• ????????? ? ????

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NELCO?????
????!
?????
Positive Feedback Loop
IP??
?????????
???
??????
??????????
??????
??????
?? ???????
?????????? ????????
6
NELCO???????

???????????????????
7
????????? ???????????
8
DWDM???

• Dense Wavelength Division Multiplexing??????????
• ??(??)????????
• ??????????Break-Through???
• ????????????
• ???????????????
• ??????????(?????)?????
• ???????(CIENA)
• ????????????(Lucent Technologies)
• ????????
• ????????????????
• ??????(????????vsDWDM??)
• ?????????(????????vs???????????)

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DWDM?????????????

• ???????????????????ｷ?????

?????????
DWDM
DWDM
ATM
ATM
ASYNCH/PDH
ASYNCH/PDH
SONET/SDH
SONET/SDH
DIGITAL VIDEO
DIGITAL VIDEO
???????
DWDM??????
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VoIP???

• Voice over Internet Protocol
• ??????????????????????????????(??????????????????)
  
• ??(??)????????
• ????(????? ?????)
• IP(Internet Protocol)??????
• VoIP?????
• ?????????????(???????)
• ????????????????
• ????????????

???????? (5???)
SONUS?VoIP (5???)
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VoIP?????????????

• ???????????????
• ??????????(?????)?????
• ???????(SONUS Networks)
• ????????????(Lucent Technologies?Nortel Networks)
• ??????????
• ??????????
• ??????(??????????????)
• ?????????(??????)
• ????????????????
• ??????????(???????ｷ???????????????)

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???????????????????? ????????????????
-?????????-
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??????
??ｷ?? ｷSonus???????????VoIP???????????
ｷJuniper???????????????? ｷVPN????????????

?ｷ????? ｷ????????? ｷ?????????? ｷ????????
???????ｷ??????????????
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?? ??????????
? IP?????????VoIP???? ???????????????????????????
? ????????????????????????? ??????????????????????
????????? ?
????? ? ????????
???????????1???????????? ??????????????????80???
?????????? ?????????????? ? VoIP?????????????? ?2
001?5??????????????????????????????? ??????
??????????????????? ｷ???????
ｷ???????????????????????????????? ????
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???????????
1.?????????? ?IP(Internet
Protocol)???????????????? ?????????????
????????????IP??????????????????ｷ????????????
??????(?????????ｷ?????)????? 2.???????????????????
??????? ??????????????????????
??????????????????????????????????????????????
???????????????????????????? 3.???????????(????)??
??????ｷ????? 4.?????????3????(??????6000??????3
??200?????)???????????????? 5.??????????????????
?VoIP??????????????????????????????????
VPN????????????????????
16
???????????????????? ????????????????
-?????????????-
17
????
??? ??????ｷ?????????????? ??? ??????? ?? ??(???
????) ??? ??????????2??2?2?
????????????13? ?? 2000?3? ????????????(2000?7?2
7??????????????) ??(2002?10???) ｷ??????????? ｷ???
???? ｷITX? ｷ????????ｷ????????? ｷ????? ?
??49?ｷ??(2?) ??????176??
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?????????????
?
????????????? ???? ?????????????????
?IP??????????????????? ?IP?????????? IP??????
??????????????? ?????????????ｷ????????????
EoIP (Everything over IP)???????????
?
?
?
?
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???????????????????? ???????????????? -?????-
?????????IP????????????????? BBIP????????????????
???? ???????????????
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4??????
???????
???ｷ????
????????????????? ??????????????????? ????????????
???????? ??????????????????? ??????????
?????????????????? VoIP Gateway?Softswitch?????NTT
??????????????? ???????????????????ｷ ????????????
?????? ??????????????
VPN
Virtual ISP
????????????????? ??????????????????? ????????SLA?
??????? ????????????????(??) ??????????????????
ISP?ASP???????????? ????????????????? ?????ISP?ASP
??????? ?????????????????? ???????????
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???????????????????? ????????????????
-?????- ????ｷ?????????
22
???? ?????????????
????????????VoIP ????????(SS7)????????????????????
???????? ????3?20?????????????? ?????????????????
?????? ????????????????????! ????????????????????
???? ???????????????????(???????????????????????2
?????????)???????????????????2004???????????5?? ?
???? ???? Trunk Gateway Switch(??Global
Crossing?Williams?????)?Soft Switch/SS7
Gateway?????????????????????????????????????
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3????????
???????/??????????(0800-1900) 3????????
?????? NTT 320km? 1991?3???160km?
NCC 340km? 1991?3???170km? 199
3?11????NCC???End-End?? ?????NCC????NTT????20???
?
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???????????????????
NTT ??????
KDDI ??????
?????? ??????
???
????
NTT???
KDDI
??????
TTNet (????) ??
NTT???
?????
NTT ??????????
????? 1.2??
????
????
NTT ???? ??????
au
J-??? ??????
????
PHS
DDI?????
????
25
?????????
????? ???? ??????????????????????????
??????????3?20???3?10???? ?????
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??????? IP Network??
?????????
?????????
IP?????????
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???IP??????
?????? VoIP??????
?????????????????VoIP?????????????????????????????
???????????????????????????????
STP??SS7-I/F????ISUP??????????
?????????? ????????
SoftSwitch
GW-STP
GW-STP
SS7 Signal GW
SS7 Signal GW
SS7signaling?TCP?
??? ???
??? ???
S-POI
S-POI
Fusion Managed Core IP-NW
IGS
VoIP GW
IGS
VoIP GW
POI
POI
PSTN (NTT?)
PSTN (NTT?)
??(64Kｷ???) ?RTP(UDP)?
GC
GC
?????????I/F???? ??(64KG.711)?IP-NW? ????????1???
??8???????????
??????????????????? ?????????????QoS?? ??????
GW-STPGateWay STP IGSInterconnecting Gateway
Switch LSLocal Switch POIPoint of
Interface S-POISignaling Point of
Interface PSTNPublic Switched Telephone Network
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?????????
????IP??
???? Managed IP-NW?QoS???????????????????????????
??IP-NW?????45msec?????????????????????66msec?????
?????????????????????????(150msec??????????MoS????
????????) ?????? ?????????????????????????(PCMG
.711)?64kb/s?????????????PSTN??????????FAX,???????
??????? ????????? ITU-T G.168???????????????????
?????????????????????
ｷ??PCM(G.711)???? ｷFAX,??????? ｷG.168??????????? ｷ
Diffserve??
????????????????QoS?? ｷDiffserve(RFC2475)
ｷMPLS(RFC2702) DWDM??????????
TGW
TGW
IGS
IGS
Managed IP-NW
??(64Kｷ???)
QoSQuality of Service Diffserve Differentiated
Services MPLS Multiprotocol Label Switching
DWDM Dense Wavelength Division Multiplexing
12.5msec??
45msec??
7.5msec??
66msec??
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???????????????
FUSION Network?????
ｷ18????(?????) ｷ38POI (?????????POI???)
??
??
??
??
? ?
??
??
??
???
??
??
??
??
??
??
??
??
??
???
? ?
??
? ?
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? ?
? ?
? ?
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? ?
? ?
? ?
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? ?
? ?
? ?
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?
???
??
??
?
? ?
??
??
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??????????????
??????? ????????????(??????????)??????????????????
???????????????????????????????????????? NTT
????????????????????? KDDI ????????????????????
?? ?????? ????????????(??)??? ??????? ?????(????
??)??????????? MCI Worldcom?Global Crossing?Level
3?PSINet?CW VoIP?? IX???????????? ??????????
ISP(Nifty?So-net?Biglobe??) ????????????????
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IP????????????????
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IP?????????????????????
33
IP?????????????????????
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IP?????????????????????
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????????
SIP
???????
???????????
??????
???????????
PC??
?????
???
GW
?????? VoIP NW
???5???????
PSTN
DSL/CATV/FTTH
GW
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????????????????
NTT??????????KDDI? ?
?????????
FUSION IP?
NTT???
NTT???
IP????????
IP????????
????IP?
IP????????
IP????
IP??
??????
IP????????? NTT??????????????????? ?????ｷIP?????
???????????????????
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PBX????IP??????

• ????
• ??????
• ????
• ｷ
• ｷ
• ｷ

??????? ??????????????
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IP????050?????????
????????????
39
???????????????????? ????????????????
-?????- ??????????????
40
????????????????
VoIP????????????/?????????????ｷ???????????????????
????????????? ????????????????????????????????????
??? ??????????ｷ??????????ID???????? ???????????
????????????????????????3?10?(???/????)???????????
???FAX?E-Mail???????????WEB??????????????? -
??????ｷ????? - WEB Phone - ?????
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???????????????????? ????????????????
-?????- ?VPN?????
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???? ?VPN????

• ????????????
• - ?????????????IP???????
• - ??Router?????VPN??????
• - ????????????????????
• ??????????????
• VoIP????????????/?????????????ｷ??
  ?????????????????????????????
• - ?????????Fusion????????????
• - ????ｷPDA???Mobile VPN????
• ??????????????????ｷ??????
• - VPN??????????????????????????
• - Fusion?Firewall???????
• - ????????IP????(IPsec)??VPN???????
• PSTN(??????)??????
• - VPN??????IP-PBX/IP-Phone????????????
  ??????????????????
• - ????????????????????

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IP-VPN??????
NTT??????? ???????????????????

• ????ｷISDN
• ????ｷADSL
• B????
• M????

44
???????????????????? ????????????????
-?????- ?Virtual-ISP?????
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????? Virtual-ISP????

• ??????????????????????????
• ??Router ??????????????ISP???????????????
• - ????????????????????????????????????
• ?????????????????
• - ?ISP??????????????????????/?????????????ｷ???????
  ?????
• - ??ISP??????Fusion????????????
• - ??ｷ????????????????????(??)
• ??IX?????????????????????????
• - ??IX??????????????????????LAN??
• ??????????????
• ??????????????????
• - ????????????????????????(NTT??)

46
???????????????????? ???????????????? -?
????????????????-
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????????????????
-???????-
????
ｷ??????????? ｷ??????
Phase?
ENUM(LNP) ????
Virtual Contact Center
??????????????? ???????
????? ?????
Phase?
Virtual Call Center
IP Centrex
CLEC ??
0120 LNP SIP???? Intelligent Free Dial
????????
????
SI??
??????
?????
??
??????
??????
??????
IP???????/IP???IP??
?????????
IP???????/?????IP??
????

• ??????????????????????????????????????????????????
  ????ｷ?????????????????????????????????

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????????????????
-??????-
??????ｷ??????? ?????e????????????????????????????
???????? ????e????ｷe??????????????? ???????ｷ????
????????????????e??????????????????e????????? ???
?????????????????? ??????????ｷ??????????????????
?????????????????????????????? ???????????????????
???????????????ｷ???????????????????? ????????ｷ???
????????????????????????????????? ???????????????
??????????????????? ?????ｷ???????????ｷ??????????
???????????????????? ????????????ｷ????????????????
?????? ?????????????????????????? ????ｷ?????????
????????????????????????????ｷ?????? ??????????????
???????????????????? ?????????????????????????????
???ｷ???? ??????
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Special Home Work

• ???????ｷ???????????
  ??????????????
• http//www.0038.net
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50
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