The Swedish ITC Commission. "General guide to a future-proof IT infrastructure." 2001. http://poseidon.umdc.umu.se/guide.pdf. Link Accessed: 2003-07-08.

Keywords: broadband, infrastructure, fiber optic

Abstract:

In 1999 The Swedish ITC Commission outlined their vision of a nationwide fine-meshed fiber optical network reaching within 100 meters of all buildings throughout Sweden by 2005. The national network will is to be IP-based, technically and competitively neutral and open to all operators offering redundancy and traffic load distribution. ISP’s would compete to deliver basic services of at least 5Mbsp, doubling every year (by changing end equipment). The cost of this basic service is not to exceed the price of a bus pass.

The General Guide to a future-proof IT infrastructure is a support document that contains advice and recommendations for municipal planning, implementation and connections to neighboring municipalities of a future proof general physical IT infrastructure.

According to the Commission, the primary purposes of IT infrastructure expansions are:

• Competence and lifelong learning
• The competitive capacity of business enterprises a whole in Sweden
• The availability of effective public service nationwide

These criteria require a physical infrastructure that can be successively increased by simply upgrading the end point communications equipment and must have equal capacity to and from the user (symmetric).

Summary of recommendations for an IP-based communication network:

• Municipal and regional networks must be planned as redundant, general networks not specific to any particular application - and financed on a long term basis
• A general ducting network must be planned and constructed
• Dark fiber must be offered to any actors needing communications networks
• Management, monitoring and coordination of ducting excavations and routing specific to the target network should be established
• Policies and coordination of community interconnection must be established
• Communications between national-level network providers should be established in order to take advantage of possible funding or financial opportunities to support the build out of the new network.
?• Coordination of effort should be established between municipalities for the creation of redundant connections between main nodes.
• Efforts should be made to connect main nodes to the national networks.

Definitions:
• Main network links main nodes together.
• Main nodes are the central place for fiber connection - will house operators active equipment (Why?)
• The distribution network links main nodes and distribution nodes.
• Distribution nodes (passive cross-connections points) connect to main nodes. through the distribution network and should be constructed so as to be connected through two different links at different main nodes.
• The connection network is the connection between distribution network and the connection node and should link connection nodes to two different distribution nodes.
• The connection node is the handover point (demarcation?) in a dark fiber network and should be connected via two different links to two different distribution nodes - connection nodes and distribution nodes can be co-located. Operators active equipment connected to buildings is housed in the connection node.
• The network built within a building is called premise wiring. Premise wiring is connected to the connection node and as a rule belongs to the building.

Vision

In principle, each municipality is to set up one or more main nodes. Cost effective realization of redundant networks will be dependent on cooperation and coordinated efforts. The single most important factor for quickly and cost-efficiently building a fiber network is coordinating excavation contracts for the conduit system. Mechanisms need to be established to monitor and supervise excavation contracts and coordinate efforts inter-municipally wherever possible. Therefore it is very important that connections between main nodes be coordinated between neighboring municipalities as well as with any other actors constructing fiber networks in the region.

Municipalities should concentrate on supplying ducting and dark fiber rental and provision for spaces for active equipment, not necessarily the operation or management of the active network.

The conduit system is a network in itself and is considered the biggest item expenditure in the development of fiber networks, therefore planned and structured development, dimensioned to cope with 100% connection of buildings, is extremely important.

A target network should be developed for a municipality (region) so that small development steps in the early stages will fit in with the final network

Regional Market considerations:

• What special communications are there in the short and long term?
• What are the different potential customer groups?
• How much traffic can the various segments generate? (How do you determine that?)
• What services are currently available?
• What is the potential to services providers?
• Which customer groups have priority for connection?

Planning connection networks;

Business campuses, such as public authorities, hospitals, health centers and schools connection nodes are usually placed within a building. Two different connection paths should always be established at two separate distribution nodes.

Multi-tenant housing - the connection node is placed in each building and the connection network must connect up to two different distribution nodes.

Residential areas connection nodes are positioned at suitable points within the area connecting 75-100 houses. Connection nodes should be connected to two different distribution nodes. Point-to-point connections are established between the connection node and each house.

Rural areas for economics, connection points have to be taken into accounts when planning ducting or cable lying in sparsely populated areas. In preparation for further connections, cable can be looped in the ground or at splice points.