ISDN PABX

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ISDN PABX
INTEGRATED SERVICE DIGITAL NETWORK PRIVATE
AUTOMATIC BRANCH EXCHANGE
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ISDN USER NETWORK INTERFACE
Analog telephone
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Integrated Service Digital Network (ISDN)ISDN
?????? 2 ??? ???

• Basic Rate (BAI)ISDN ??? BAI
  ??????????????????????????????????????????????????
  ??????????????? 8 ??????????????????????????????
  2 ??????? ????????????? ISDN ??? BAI
  ?????????????????????????????? 2 ????
  ??????????????????????????????????????
  ?????????????????? 60 Kbps( ???????????????? )

• Primary Rate (PRI)???????????????????????????????
  ? (ISDN PABX) ??????????? ISDN ??? PRI
  ?????????????????????????????????????? ISDN
  ?????????????? 30 ?????????? ?????????????????????
  ?????????????????? 64 Kbps ??????????????????????
  ?? ?????????????????????????????????
  ??????????????????????????????? 2.048 Mbps
  (??????????????????) ?????????????????????????????
  ?????

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ISDN reference point
ISDN terminal
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Interface of ISDN PBX
Terminal equipment
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ISDN PBX architecture
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B Bearer channel 64 kbps D Data channel or
signaling channel 16 Kbps for BAI
64 Kbps for PRI used TS 16 over PCM E1
BAI channel
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PRI channel
H0 channel 384 Kbps H12 channel 1920 Kbps
For high speed user information
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Signaling interface
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Q.931 signaling sequence for circuit switch call
Human A
Terminal A
NETWORK
Human B
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Q.931 signaling between PABX and ISDN
Human A
IPABX
ISDN public Network
Human B
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Addition supplementary service for ISDN
- Multimedia service (voice ,data,video on the
same subscriber line) - set up 2 connection on 1
subscriber line on the same time for BAI - set up
30 connection on 1 subscriber line on the same
time for PRI - Sub-address call(SUB-address) -
Multiple subscriber number (MSN) - Direct dial in
(DDI) - Calling line identification presentation
(CLIP) - Connected line identification
presentation (COLP) - User to User service -
Voice call/Data call
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????????????? ??????????????? (PABX)

• ???????????????? 3 ?????? ?????? ???

• 1. ????????????????????? ( Electromagnetic
  Interference ???? EMI )

2. ??????????????????????? ( Radio Frequency
Interference )
3. ?????????????????????????? ( Cross Talk ????
Next )
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??????????????? (CABLE NETWORK)

• ???????????? 5 ??? ??????? ???

1. ??????????? (Aerial Cable ???? Overhead Cable)
2. ?????????????????? (Direct Buricd Cable)
3. ??????????????????????? (Underground in
Conduit Cable)
4. ??????????? (Throughing Cable)
5. ???????????? (Submarine Cable)
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Switch TechnologyPacket Switch

• ??????????????????????????????????????????????????
  Packet Switch ???? ????????????????????????? (
  Broadband Network )??????????????????????????????
  ?????????????? Switch ???????????????????????
  ????????????????????????????????????????????? (
  X.25 Frame Relay,ATM ) ??????????????????? Packet
  Switch ??? ???????????????????????????????????????
  ?????????????????????????????????????????????????
  ?????????? ???????????????????????????????????????
  ??????? ?????????????????????????????????????????
  ??????????????????

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Switch TechnologyCircuit Switch ( PSTN / ISDN )

• ???????????????????????????????? Circuit Switch
  ???? ???????????????? (PSTN Network ???? ISDN
  Network) ????????????????????????????????????????
  ?????????????????????????????? ???????????????????
  Circuit Switch ???1. ??????????????????????????
  ???????????????????????????????? ( ???????????
  ???????????????????????????? )2.
  ????????????????????????????? ????????????????????
  ???????????????????????????? ( ???????????????????
  ???????? )3. ??????????????????????????
  ????????????????????????????? ????????????????????
  ????????? ????????? ???????????? Circuit
  Switch ???????????????????????????????????????????
  ???????????????????????????

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Telecommunication Network

• 1. ????????????????????? ( Switch Equipment )
• ????????????????????????????????????????????
  ?????????? ( Switching ) 2 ??? ???

• Circuit Switch Technology

• Packet Switch Technology

• X.25

• Frame Relay

• ATM

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????????? ( MDF ) ??? CROSS CONNECTION
WIRE GUIDE

• ?????? CO.LINE WITH ARRESTOR

JUMPER WIRE
????????? PABX
?? EXTENSION
GROUND
GROUND
TERMINAL
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???????????????????????????????????????????
??????????????? 2 ???? ???
1. ????????????????????? ( Switching
Equipment ) 2.
????????????? ( Transmission Equipment )
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???????????????????? ( DSL )
( DIGITAL SUBSCRIBER LINE )

• DSL ???????????????????????????????????????????
  ???? ...
• ADSL ?????????????????????????????????
  ????????????????????????????
  ( ?????????????????? 8 Mbps
  ????????????????????? 1 Mbps ) FDSL
  ??????????????????? OPTICAL FIBER ?????? 2 Mbps

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????????? VoIP ( Voice Over Internet Protocol )

• ??????????????????????? Packet
  Switching ????????????????????????????????
  ?????,???????????? ????????????? Packet
  ???????????????????????????????????????????
  ???????????????????????? ???????????????????
  ??????????????????????????????? IP ???????? (
  Internet Working Prtocol IP )