The municipality of Lappträsk decided in January 2003 to build a water pipe to Hindersby, our village, and we decided to put a fibre cable in the same ditch. It was not quite for free, we have worked in putting down both our fibre cable AND the water pipe in the same ditch. The village company, Hindersby-Bäckby Service AB, is handling the practical arrangements.

Most of the ditch has been dug using a machine for under-drainage (about 8 kilometre). This took only a few days. The cable was placed about 10 cm from the pipe so that it is easy to install water connections anywhere.

	The first phase was from the school to Söörneseendan (red line) down to the right corner of the map (Click on the map to get a bigger version:490k). The second phase in the autumn 2003 was to Brennskooin in the North. A short cable was installed with the water pipe to Sjeggasbackan in 2004, but it is not connected.

Photos from digging in May 2003 are here .

Photos from splicing the fibres i August-September 2003 are here .

The final inspection of Hindersby fibre net was ready at 15:50 on Tuesday 9th of September 2003. At 20:50 we ran a connection over the fibre net for the first time.

This is the first village optical fibre data network i Southern Finland. We had some problems with the splicing machine in August which made our net second in whole Finland. The village Liedes started their net one week earlier (but they were building it for almost two years).

On Friday 14th of October 2003 we had a big NET OPENING PARTY with traditional "KAFFI å KAKU" (coffee and cake) in our Data cottage.

The local papers wrote a lot about it. You can at least look at the pictures. We also got the first "Key of Borgåbladet" (a local paper) for being a very active village.

The second phase started in autumn 2003 when the fibre cable was put underground to the "Oppbyyin" and "Brennskooin" parts of the village (top right of the map). We started to splice the cable in February 2004 with our own splicing machine. It was ready to use in July 2004. About 400 meter in Oppbyyin is installed on poles (owned by the municipality) because the ground is full of stones (hard digging).

The logical structure looks like this (28 September 2004). The green circles are future connection points with 10 meter extra cable. Red thin boxes are connection panels with SC adapters. Cyan lines are connecting fibres. Blue boxes are pressure tight boxes in the ground.
Click here for the logical structure (180k)

The exact connection of the fibres (as of 28 September 2004) is here for Hoopenbackan (330k) å here for Oppbyyin and Brennskooin (300k) .

All connections in the earth boxes (rectangles with rounded corners) are spliced and all panels (red rectangles) are inside the houses. A 6-6-6 circuit in the earth boxes guarantees that we have full flexibility without the need for resplicing. By using fibre pigtails at the panels it is possible to have all possible connections. In the example beneath there are three connections between the school (Skoolan) and the bakery (Ingas bageri). If another one is needed it is easy to use a pigtail at the Data cottage (dashed) or at the other end (dashed).

Click here for the 6-6-6-example

A panel is very simple. Here is a scheme showing how a computer is connected to the fibre net:

In the photo we have our main node. Ulf Grindgärds, head of the Finnish regional networks association, is holding the panel with the fibre pigtails and SC connectors. The fibres are connected using yellow SC-SC fibre to the media converters (six grey boxes to the right) and further using Ethernet cat5e cables from the media converters to the Ethernet switch (black box in the middle of the picture).

A router (topmost box) is connected to the switch and on the WAN side to a WLAN configured as a client server (behind Ulf in the window). From there the signal goes via a repeater WLAN to the grain dryer (a very high building) and from there via another WLAN connection to the tower of the local telephone company about 6 km away. There we have an ADSL connection, but only temporarily. A soon as possible (summer 2005 ?) we will build a fibre cable connection to the fibre of the municipality along main road 6.

In the lower right corner there is an UPS (black box) which is necessary to handle the short (half second) breaks in the electricity distribution which is caused by the automatic switches of the electricity power company. It is a cheap model (50 euros) but good enough for most of the problems.

The is taken 30 September 2004. Click on the photo to see a bigger version (200k).

Add a cable drum holder to your log wagon:

If you have access to a log wagon it is easy to build a holder for a cable drum. You only need two logs and some welding. Remember that lifting the cable drum up on the holder is very heavy. A usual log lifter is normally not strong enough.

Blueprint in PDF-format (Acrobat Reader).

Last updated: 30 September 2004 by Nisse.