TOT ADSL

1
Troubleshooting

• OPNET (speed 64k 2 Mbps)
• Power ??? ???? AC ???????????
• LT ??? ???????????? NTU ?????????????? point to
  point ???????????????? clock
• NT ??? ????? NTU ??????????? ?????? clock ???
  NTU ???????
• ?????????? DSL (Digital Subscriber Line)
• Syn ??? ????? NTU sync ???????????
• Los ??? ????? NTU ??? sync ???????????
• LPD Loop Back ???????????? Network management
  ??????????? loop ??????????????
• ERR Error ????????????????? Error
  ???????????????????????

?????????? ?????????????????????????
2
Troubleshooting

• OPNET (speed 64k 2 Mbps)
• ???? DTE
• TD ?????????????????????
• RD ?????????????????????
• LPD Loop Back ???????????? Network management
  ??????????? loop ??????????
• ERR Error ????????????????? Error
  ?????????????????????
• ALARM
• ALM ???????????? NTU ???????????????????????????
  ?
• TST ???????????? NTU ??????????????????????
• A ???????????? Annex A ?????? (TOT ????????
  Annex A)
• B ???????????? Annex B ??????

?????????? ?????????????????????????
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(No Transcript)
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(No Transcript)
5
ADSL
6
What is ADSL Technology ?
xDSL
Asymmetric
Symmetric
G.SHDSL
ADSL
VDSL
SDSL
HDSL
IDSL
TOT
TOT
ADSL Asymmetric DSL VDSL Very
high bit rate DSL SDSL Symmetric DSL
IDSL ISDN DSL HDSL High bit rate
DSL G.SHDSL G. Symmetric High bit rate DSL
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ADSL Trend
ADSL2 ADSL2PLUS (ADSL2) ADSL2PLUSPLUS
(ADSL2)
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????????????????????? DSL
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How does ADSL work ?
ISP1/ Company1
??????
ADSL
DSLAM
ISP2/ Company2
?????
POTS Splitter
ADSL
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????????????????

• ???????????????????????? ADSL ??????????

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DSL-VPN
RADIUS
DSLAM
L2TP
RADIUS
ISP1/ Company1
DSLAM
L2TP
Data Network
BRAS
ADSL
ISP2/ Company2
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????????????????? IP-VPN (Main) ADSL (Back up)
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????????????????? IP-VPN (Main) IP Star (Back
up)
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?????? VPDN
Branch Office 100
House 1
ATM Network ISDN RAS 1248 IP/MPLS Network
PSTN/ISDN AGW 1222 or 12xx
Local call charging 3 Baht
??????????????????????????? Headquarter 1.
???????DDN ???????????????? POP
????(????????????) ????? Site ??????
2. ??? Bandwidth ???????????????????
IP-VPDN Branch ????????????????????????????????
modem ??????? 3 ???
15
???????????????????? (???????????????????)
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After Sales Service

• Call-Center
• call 1477 (24/7) for TOT Tel. Number
• Network Operation Center (24/7)
• Preventive Maintenance by OSS
• Technical Information call 66-2575-4750
• Sales Department call 66-2575-5910

17
Q A
18
Thank You
For more technical Information Mr. Boonrit
Moombanshao Tel. [phone] Mr. Somchai
Puangmanee Tel. [phone] Email
team_ip_at_yahoo.com boonrit_at_tot.co.th