Conversion to simple underground facility network under modern underground facility technologies

1
Conversion to simple underground facility network
under modern underground facility technologies

• Taishi Deguchi
• NTT Access Network Systems Laboratories

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Social Background in Japan
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Social Background in Japan

• Expansion of Underground Facilities

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Social Background in Japan

• Expansion of Underground Facilities
• Restrictions on Underground Work

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Social Background in Japan

• Expansion of Underground Facilities
• Restrictions on Underground Work
• Provision of Basic Facilities using Social Capital

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Social Background in Japan

• Expansion of Underground Facilities
• Restrictions on Underground Work
• Provision of Basic Facilities using Social
  Capital
• Ensuring Reliability during Earthquake

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User Buildings / Houses
NTT Building
Configuration of Simplified Basic Facilities for
Underground Networks
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Trunk Conduits
Cable Tunnels
Configuration of Simplified Basic Facilities for
Underground Networks
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Trunk Conduits
Shared Facilities
General Conduits
Cable Tunnels
Configuration of Simplified Basic Facilities for
Underground Networks
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Trunk Conduits
Distribution Conduits
Shared Facilities
General Conduits
Cable Tunnels
Configuration of Simplified Basic Facilities for
Underground Networks
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Conventional
Existing Conduits
Aged Conduits
Routes Scheduled to be Provided
Cable Tunnels
Example of Integrating Routes
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Future
Use of Existing Conduits
Trunk Conduits
Cable Tunnels
Example of Integrating Routes
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Route Classification
Routes that will become necessary in the future
Fundamental Concepts for the Provision of Basic
Facilities
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Route Classification
Topics
Detailed Plans
Provision of flexible and simple facilities
Planned construction and maintenance of facilities
Routes that will become necessary in the future
Fundamental Concepts for the Provision of Basic
Facilities
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Route Classification
Topics
Detailed Plans
Provision of flexible and simple facilities
Planned construction and maintenance of facilities
Routes that will become necessary in the future
Effective use of existing facilities
Prolongation of life of existing facilities
Fundamental Concepts for the Provision of Basic
Facilities
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Route Classification
Topics
Detailed Plans
Provision of flexible and simple facilities
Planned construction and maintenance of facilities
Routes that will become necessary in the future
Effective use of existing facilities
Prolongation of life of existing facilities
Routes that are not necessary in the future
Fundamental Concepts for the Provision of Basic
Facilities
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Route Classification
Topics
Detailed Plans
Provision of flexible and simple facilities
Planned construction and maintenance of facilities
Routes that will become necessary in the future
Effective use of existing facilities
Prolongation of life of existing facilities
Lending facilities to other
companies
Effective utilization for new needs
Routes that are not necessary in the future
Use of distribution facilities
Fundamental Concepts for the Provision of Basic
Facilities
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Route Classification
Topics
Detailed Plans
Provision of flexible and simple facilities
Planned construction and maintenance of facilities
Routes that will become necessary in the future
Effective use of existing facilities
Prolongation of life of existing facilities
Lending facilities to other
companies
Effective utilization for new needs
Routes that are not necessary in the future
Use of distribution facilities
Elimination of unused
facilities
Reduction of assets
Fundamental Concepts for the Provision of Basic
Facilities
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Environment
Promotion of productivity improvements
Spreading superannuation of facilities
Replacement of cables for bringing Fiber to the
home
Lending facilities to other companies
Trends within and outside the Company and Service
Tools
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Environment
Topics
Promotion of productivity improvements
Simplification Flexibility
Spreading superannuation of facilities
Effective use
Replacement of cables for bringing Fiber to the
home
Free access
Shared use
Lending facilities to other companies
Trends within and outside the Company and Service
Tools
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Environment
Service Tools
Topics
Promotion of productivity improvements
Smoothening of business
Simplification Flexibility
Spreading superannuation of facilities
Management of facilities
Effective use
Replacement of cables for bringing Fiber to the
home
Free access
Management of installation space
Shared use
Lending facilities to other companies
Trends within and outside the Company and Service
Tools
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Shared Database System
Facilities data
Ground data
Capacity
Users data
Position
Aging status
Maps data
Cable data
Conversion to electronic data
Paper maps available in the market
Urban plans
Facilities Management System
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Shared Database System
Facilities data
Ground data
Capacity
Users data
Position
Aging status
Offer the required data
Maps data
Cable data
Conversion to electronic data
Paper maps available in the market
Urban plans
Facilities Management System
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Shared Database System
Applications
Facilities data
Ground data
Shared use of facilities
Capacity
Users data
Position
Construction plan
Aging status
Offer the required data
Maps data
Cable data
Maintenance
Conversion to electronic data
Paper maps available in the market
Urban plans
Facilities Management System
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Subscriber lead-in conduit
Modified branch conduit
Single conduit
Diameter
Components
Single conduit
2 6 inches
1 or 2 inches
Subscriber lead-in conduit
2 6 inches
Modified branch conduit
System Configuration of New Underground
Distribution Facility
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Single conduit
Lead-in cable
Distribution cable
Diameter
Components
Single conduit
2 6 inches
1 or 2 inches
Subscriber lead-in conduit
2 6 inches
Modified branch conduit
System Configuration of New Underground
Distribution Facility
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Conventional Type Conduits Arrangement
Occupancy ratio 100
Concept of Trunk Conduit
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Free-space Conduit
Arrangement
Conventional Type Conduits Arrangement
Occupancy ratio 100
Occupancy ratio 50
Equal space for installing optical fiber cable
cores in
Outer pipe
Compactness
Inner pipes
Concept of Trunk Conduit
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Manhole side wall
Outer pipe
Inner pipes
Duct sleeve
Inner pipes fixing socket
Arrangement of Free-space Conduit
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Cables of other companies, etc.
Large diameter optical fiber cable
Metalic cable
(temporarily placed)
Arrangement of Free-space Conduit
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Inner pipes
Arrangement of Free-space Conduit
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Free space
Small diameter optical fiber cable
Arrangement of Free-space Conduit
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High density installation of cables
Installation technique of concentrating cable
connection points in pit
Pit
Pit
Cable Tunnel
High Density Cable Tunnel
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High density installation of cables
Shared use
Space used by NTT
Space used by other companies
Installation technique of concentrating cable
connection points in pit
Pit
Pit
Cable Tunnel
High Density Cable Tunnel
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Examples of Aseismatic Technologies
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Expansible and flexible joint
for open-cut cable
tunnel
Steel fiber mixing into manhole duct
concrete
Flexible conduit for
building access facilities
Examples of Aseismatic Technologies
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Please notify me of questions that I could
not answer to today or of additional questions

• by FAX [phone]
• by E-mail deg_at_ansl.ntt.co.jp

• Taishi Deguchi
• NTT Access Network Systems Laboratories