Michal Lepiarz

The most important task in the design of fiber optic link is to determine the maximum range of the optical transmission path, being in fact the balance of optical power in the link. Balance of power is a comparison of the power at the input of the optical link with the losses in fiber optic cables and other path components. This will help to find the optimal parameters of transmitting and receiving devices to ensure proper signal transmission.

One of the basic criteria of optical equipment classification is the type of the fiber optics with which it works. It is connected with the type of transmission of light in the fiber core - single-mode or multimode.

Proper configuration of the router is the precondition for networking and Internet access. Let's begin with the description of its functions...

The crimes that take place in schools are usually petty crimes, like thefts of clothes or other personal belongings, extortions of small sums of money, bullying of younger students by the older ones. But the number of more serious offenses, including battering and the crimes connected with pushing drugs also becomes a growing problem. Many people understand that even best educative measures cannot solve the problem a complex action is needed.

MPEG-4 is the newest video compression standard which quickly becomes popular, also in the case of video streaming. In comparison with previously presented standards, it integrates effective methods for multimedia data....

To meet the needs of many people interested in building WLAN network, we have decided to collect in one article a bit of theory and practical information on quick and effective implementation of wireless networks working in 2.4 and 5 GHz bands (802.11).

This is a continuation of the article titled "WLAN in single-family house". Here we will discuss WLAN networks in other sites, such as offices, agencies, lecture halls, warehouses and the like.

ULTIMAX CCTV recorders. ULTIMAX has won prestigious award - Gold Medal of Intertelecom 2008 for the best product... See more details.

If we wish to run a server for website hosting or accessing CCTV cameras, available from any Internet location - and we don't have a static IP address but a dynamic one supplied by DHCP server (e.g. ADSL service) - we have to use DDNS (Dynamic Domain Name System).

Worldwide sports events, drawing the attention of millions, issue a challenge for protection of such mass gatherings. Due to high risk of terrorist attacks the organizers take great responsibility for safety of all the competitors and spectators.