The Regulation of March 12, 2009, amends the requirements that have to be met in newly constructed multi-family buildings and public utilities. It requires the extension of the telecommunications infrastructure to multi-family, commercial and public buildings.

Based on our experience, we believe that these recommendations should also be applied in the case of single-family houses. Substantial reduction in prices of fiber-optic equipment allows to think about use of this option in the near future. Availability of the optical network infrastructure provides easier and cheaper access to really broadband services. This technology significantly increases the range of top-level broadband services (very fast Internet, cable TV with HD channels, telephony/video-telephony etc.) and their capacity. It provides the possibility of joining to the cable networks in places where it was previously impossible or very expensive.
New house should therefore be prepared for connection to the optical network from the bottom (on the ground floor or basement level). In the future, the connection to the lower telecommunications box should be easily extensible by vertical optical cable to the top "satellite" box (it is important to estimate the sufficient size of the vertical duct).

The conditions for making signal installations have to be determined already at the designing and construction stages.

Thus, the "double star" term - all cables go from two central transition points (the connection boxes in the attic and basement) to the terminal outlets.

It is important to ensure the integration of the signals coming from the top and bottom parts of the building. The duct linking the basement with the attic allows easy replacement and/or putting next cable/s. As the deployment of cables on the same level is not so complicated, drilling of floors/cellings is usually a more difficult task. The duct prepared at construction stage may also be used in the future for e.g. fiber-optic cable that will replace both UTP/FTP and coaxial cables. Nowadays, this duct should be prepared for putting two UTP/FTP and several coaxial cables (TRISET-113).

As the boxes there can be used popular electrical panels, but they do not provide additional support for multiple functions of signal installations. The best choice is the special platform for that purpose, guarantying optimum performance and protection of the system - domNet and TV-SAT cross-connection boxes.

1st Stage - installation of cabling and outlets

2nd Stage - installation of active devices according to the needs of the customers (the process can be continued over time)

It is recommended to use reliable devices, e.g.:

The diagrams shown below can help to find optimal solution.

Economical multi-purpose SAT-TV, CCTV, LAN/WLAN system

Designs based on SignalNET can provide the following functions:

• transmission of satellite and terrestrial TV signals; in each room there are available all terrestrial programs,
• possibility of connecting satellite receiver in each room (reception of broadcasts from two satellites),
• retransmission of paid satellite programs to all rooms (from the "main" room with return coaxial cable),
• transmission of played DVD, DivX etc. (from the "main" room with return coaxial cable),
• possibility of connecting cable TV to all rooms - after providing the signal to domNET or Dipol connection box.

Yes, full functionality of the system is provided by:

• "double star" configuration for distributing all kinds of signals,
• vertical cable duct ensuring "top - bottom" connection,
• transition point/s - cross-connection box/es enabling the installer to shape and modify the system by combining some functions of the installations.

There is no point whether the installation "starts" in the top or in the bottom of the house. If a particular application requires to use only one transition point - in the attic or in the basement - it does not change the concept. In this situation the signals are conveyed through the vertical cable duct to the second star node. Placing the only node in the upper part of the house seems to be better solution than placing it in the basement - the latter case would require to put into the vertical duct 9 coaxial cables from the antennas. It would be rather difficult job, besides, due to longer cables, there would be a risk of interferences (RF amplifiers should be placed as close to the antennas as possible).

The kind of the equipment used depends on the recommendations of the developer/owner. It may be matched to the specific needs of the owner, or to the home finishing standards. The main job of the installer is to guarantee quality cabling. Cable system in a house is a small part of its total cost, but it may cause many troubles if done inadequately. There is no such problem with terminal and active devices - they can be easily changed, if needed. In the presented diagrams - both the passive and active components have been chosen with special attention to high quality and reliability of the systems.