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For many years, data and telephony networks are an indispensible link for processing data and communication in the business world. Also in the residential sector this is more and more implemented with the of Internet and it related applications. In the residential sector as well, it is implemented gradually because of the many advantages of the internet and its related applications. Here also, with many years experience, we deliver the best quality and incorporate that in your project. To make you feel aware in the world of utp, ftp, screened, unscreened, cat5e, cat6, etc., we help you in choosing the correct way of implantation, quantity, material, etc. to come to a solution that gives you satisfaction and accommodates your wishes and requirements.

In association with our partners, we can even proceed to the development of a total solution for the implementation of the required/desired hard- and software.

Next to the classic wiring, we also offer all kinds of wireless LAN solutions:

  • Indoor WLAN with high security and broad range of features:
    • multi-SSID, VLANs, IAPP roaming etc.,
    • Outdoor Point-to-Point wireless networking with high performance, security & availability
  • Within the wireless LAN specialisation, we offer the following services:
    • Pre- and post-sales support
    • Trainings
    • Configuration assistance (remote or on-site)
    • Wireless Site Survey
    • Consultancy

Each wireless project should be preceded by a Wireless Site Survey in order to guarantee optimum coverage and performance. During a Wireless Site Survey, our engineer(s) visit the customer together with you and perform a broad range of wireless tests. After the measurements, a site survey report is made, which describes the need of the customer, an overview of the covered area and location of access points, together with a product offer.

 

What is a wireless site survey?

A wireless LAN site survey is the first step in the deployment of a Wireless network and the most important step to ensure desired operation. A site survey is a task-by-task process by which the surveyor studies the facility to understand the RF behaviour, RF coverage areas, discovers the presence of interference coming from other sources that could degrade the performance of the wireless LAN and determines the number & appropriate placement of the access points.

 

When should I conduct the wireless site survey?

Pre-installation-The best moment to conduct a wireless survey is when all or most of the environmental variables are in place. For example, in a warehouse it is best to conduct the survey while the warehouse is at full capacity and while fork lifts and other animated variables are functioning as normal. Pre-deployment Sometimes it is needed to have the installation in place before the personnel and stock occupy the building. in this example, Tech Session technicians, based on years of experience and the latest simulation tools, determine the best locations for the access points by testing RF signal propagation onsite while keeping in mind the final physical environment. It is often necessary to conduct an RF fine tuning once the physical environment is stable. Pre-building Tech Session is able to build a detailed wireless site survey report in any building environment even before the building is built. Using the latest simulation technologies, WLAN technicians are able to place access points on electronic ground plans and visualize how the signal propagated over an area. Channel and power transmission can be adjusted and tweaked to provide a correct bill of materials and installation report. After the installation the same report is used to fine tune the RF onsite. Post-installation In many cases companies have a wireless installation in place and operating but they are experiencing strange behaviour to the wireless network. Tech Session has tools to evaluate your existing wireless infrastructure. With a post-installation site survey RF information is sampled and gathered to provide technicians with an overall view of the RF environment. With the gathered RF data technicians evaluate the coverage areas per access point, verify the overlap of neighbouring access points, determine optimal transmit power and channel allocations, and identify and pinpoint any RF interfering sources such as rogue access points.

 

Why is a site survey important?

With wireless systems, it's very difficult to predict the propagation of radio waves and detect the presence of interfering signals without the use of test equipment. Even if you're using omni-directional antennas, radio waves don't really travel the same distance in all directions. Instead walls, doors, elevator shafts, people, and other obstacles offer varying degrees of attenuation, which cause the Radio Frequency (RF) radiation pattern to be irregular and unpredictable. As a result, it's often necessary to perform a RF site survey to fully understand the behaviour of radio waves within a facility before installing wireless network access points. Like any other job, you save more time and money by planning out what you're building first rather than simply starting building and hoping that you'll make it under budget.

 

How is an Tech Session Site Survey Conducted?

An Tech Session site survey eliminates never ending guess-work. Experienced WLAN technicians test and retest possible access point locations with real access points and antennas. At each location access point transmit powers and channels are modified to prove that the final access point location will cover the actual area they were intended to cover with just enough signal overlap with its neighbouring access point to provide seamless roaming and continuous connectivity. Be it scanning, VoWLAN, or pc applications, Tech Session technicians are experienced in your wifi application. There is no theory here……………… What you see is what you get.

 

Are Wireless Site Surveys expensive?

No. Wireless site surveys save time and money. The Wireless Site Survey is the most critical step of a successful wireless deployment. Not conducting a Wireless Site Survey can lead to vast over-spending on infrastructure devices or alternatively to underserved unhappy end-users.

 

Are data site surveys and VoWLAN surveys the same?

No.

 

Can I use my existing data WLAN for VoWLAN?

The best situation is that your data WLAN was installed based on a VoWLAN site survey. Even if you don’t start with VoWLAN. If this is the case you still need to ask for a VoWLAN site survey analyze (because the situation and building structure can be changed meanwhile) but the modifications will be minimal. If your initial installation was NOT based on a VoWLAN site survey a complete VoWLAN site survey is in most cases the only guaranty for a correct installation. The disadvantage of this situation is that you will need to invest in adding and replacing access points, antennas, cables,… Because of this: “If you plan to install VoWLAN in the future a VoWLAN site survey can save you a lot of money”.

 

Setting up a wireless LAN

Wireless LAN techniques (or wireless data communications) are not new. The technique to communicate wireless through Radio Frequency (RF) dates from the Second World War and the American army made gratefully use of it. In a company environment, the technique has been used for more than a decade, i.e. in logistics to create a link between the floor and the computer system, scanning barcodes.
When we speak of Wireless Networking of WLAN (Wireless Local Area Network), the expression Wireless Fidelity, known as Wi-Fi, is often used. It is a certificate label for wireless data-network products working according to the international standard, IEEE 802.11 (wireless Ethernet). Products made according to this standard use radiofrequencies in the 2.4 GHz and/or 5.0 GHz band with the condition that they can be used unlicensed.
A product is eligible for the Wi-Fi logo when an independent certification office has established that certain functionality, performance and inter-operational demands have been met. Especially the last aspect is of great importance because it guarantees that products with Wi-Fi logo can collaborate with products of other manufacturers.

 

Setting up a Wireless WAN…

WAN (Wide Area Network) is slightly different to LAN (Local Area Network). While LAN connects computers in a limited environment (office, building, campus…), the WAN connects remote areas (office in Brussels with office in another part of the world for example). Wi-Fi is a useful technology for connecting clients remotely and is the fastest growing technology offered by all the major players in this market. The advantage of wireless technology is its lack of the need of physical wire/copper or fibre to connect to the client. Here also, we can offer you the advice, services and products you need to perform your national/international business.

 

Standards, channels and security:

The current IEEE (Institute of Electrical and Electronics Engineers) 802.11 group consists of six wireless modulation techniques, all using the same protocol. The most popular (and productive) techniques have been adapted, enhanced and completed with security protocols. The Wi-Fi spectrum is divided in 14 overlapping channels, separating the centre of each channel by 5 megahertz. Great care has to be given to choosing the channels when installing a network close to other wireless networks in order to let them function without disturbing each other or causing interference. Via a WAP (Wireless Access Point) or AP (Access Point), the (unsecured) network can be accessed by any computer within range and equipped with a wireless network card. Therefore, it is very important to consider securing your network and disable access for non-related users. Wireless G, Speedboosters, WEP, WPA, encryption and MAC addresses are all expressions familiar to an IT manager, yet not always used to secure the wireless network.

Tech Session Wireless LAN & WAN services helps you avoid coverage gaps, meet capacity requirements and access data reliably, in accordance with international standards and with great attention to securing the network against unwanted visitors.