Computer Repair UK

When you use a wireless network at home, range and performance can be influenced by a lot of factors. The location of your wireless router as well as the location of your PC and/or laptop can make a lot of difference. Concrete walls also have a strong influence on Wi-Fi signals, so too many concrete walls in between the communication devices will reduce the signal strength, and as a result, the performance.

But range and obstacles are not the only possible problems with wireless networks. What about your neighbors? If they are using a wireless network, chances are, you are both using the same frequency, which would cause interference and again loss of signal quality. Since wireless internet access is so common these days, it’s better to check that too.

Here’s How You Can Improve Your Wi-Fi Network!

Depending on the location of your equipment, you can try to change the direction of your antennas. If your router has a built-in antenna, consider hanging it on a wall instead of placing it horizontally on a cabinet to change antenna direction. Most routers will come with instructions on best positioning for maximum range.

If you want to further optimize the range and performance of your wireless network, you might need to change the frequency of your WiFi communication.

There is a dedicated bandwidth for WiFi networks, in which multiple channels are defined. The problem is that many vendors configure their hardware to use a default channel. Typically this is channel 6, since it is the middle of the range (1 to 11 in the US, up to 13 for Europe).

To find out if you need to change your wireless network frequency, you need to know what channel you are using and if the other channels are better. There are many tools available for this, and one of them is called NetStumbler. The current version is 0.4.

The program can be installed with the default options. Once you start the application, it will automatically start a scan of the wireless networks in your surroundings. for more please visit MPLS VPN

In the results pane, you can see all detected networks grouped by MAC address, SSID or channel. The colored icon in front of the MAC address indicates the signal strength. Using these details, you can first check how many networks are using the same channel as you are.

You will need to know your SSID of course (either printed at the bottom of your wireless router, if it came from your ISP, or check the network settings on your computer’s wireless card).

Ideally, there should not be (too) many wireless networks on the same channel, but if there are, you want to make sure they have low signal strength.

If there are too many wireless networks on the same channel, try changing the channel to improve your wireless network range and performance. This needs to be done in the wireless router or access point.

The hardware will come with instructions on how to change the WiFi channel. Your laptop or PC’s wireless card will automatically switch to the new channel. for more please visit MPLS

If you are using a laptop, you can also use the program to see where your signal strength is best. Move around with the laptop and see which location in your house has the best signal strength.

You can use the colored icon as well as the ’signal’ columns to assess the network quality. Make sure the network scanning is active to ensure the values are updated while you move around.

Using these Wi-Fi tips, you can easily improve your wireless internet access speed, or solve problems with your wireless internet connection.

Good luck!

for more please visit VPN or visit computer repair Notting Hill for help in the London area

written by DavePF \\ tags: Computer Repair Notting Hill

You can determine how much voip bandwidth to set aside for voice traffic using simple math. However, in a converged voice and data network, you have to make decisions on how much voip bandwidth to give each service. These decisions are based on careful consideration of your priorities and the available voip bandwidth you can afford. If you allocate too little voip bandwidth for voice service, there might be unacceptable quality issues.
Another consideration is that voice services are less tolerant to voip bandwidth depletion than that of Internet traffic. Therefore, voip bandwidth for voice services and associated signaling must take a priority over that of best-effort Internet traffic.
If a network were to use the same prevailing encoding (CODEC) scheme as the current PSTN system, voip bandwidth requirements for Voip networks would tend to be larger than that of a circuit-switched voice network of similar capacity. The reason is the overhead in the protocols used to deliver the voice service.
Typically, you would need speeds of OC-12c/STM-4 and higher to support thousands of call sessions. However, Voip networks that employ compression and silence suppression could actually use less voip bandwidth than a similar circuit-switched network. The reason is because of the greater granularity in voip bandwidth usage that a packet-based network has in comparison to a fixed, channel size TDM network.

Allocations of network voip bandwidth are based on projected numbers of calls at peak hours. Any over-subscription of voice voip bandwidth can cause a reduction in voice quality. Also, you must set aside adequate voip bandwidth for signaling to ensure that calls are complete and to reduce service interruptions. The formula for calculating total voip bandwidth needed for voice traffic is relatively straightforward. The formula to calculate RTP bearer voice voip bandwidth usage for a given number of phone calls is as follows:

Bits per sec = packet creation rates per sec x packet size x number of calls x 8 bits per sec

Where samples per sec = 1,000 ms / packet creation rate

Example: 2,000 full-duplex G.711 encoded voice channels that have a packet creation

Rate of 20 ms, with a packet size of 200 bytes (40 byte IP header + 160 byte payload)

50 samples per second = 1,000 ms / 20 ms

160 Mbps = 50 x 200 x 2,000 x 8

Note that this number is a raw measure of Voice over IP traffic and does not take in account the overhead used by the transporting media (links between the routers) and data-link layer protocols. Add this raw IP value to that of the overhead to determine the link speeds needed to support this number of calls. Note this value represents only the bearer (voice) content. Signaling voip bandwidth requirements vary depending on the rate at which the calls are generated and signaling protocol used. If a large number of calls are initiated in a relatively short period, the peak voip bandwidth needs for the signaling could be quite high. A general guideline for the maximum voip bandwidth requirement that an IP signaling protocol needs is roughly three percent of all bearer traffic. Using the previous example, signaling voip bandwidth requirements if all 2,000 calls were initiated in one second would be approximately 4.8 Mbps (3 percent of 160-megabits).

With the calculation of bearer and signaling, the total voip bandwidth needed to support two thousand G.711 encoded calls would be an approximate maximum of 164.8 MB. This bandwidth requirement is a theoretical maximum for this specific case. If the parameters change, such as call initiation rate, voice encoding method, packet creation rate, employment of compression, and silence suppression, the voip bandwidth requirements would change as well. With large Voice over IP implementations requiring sizable voip bandwidth, it becomes imperative that the IP network delivers the needed service at predictably high performance.

Jim Francisto
free reverse cell phone lookup

written by DavePF

A home wireless network is a computer network you have in your home. Those connections and the computers that are part of them form a network. Just like a spider web, when the trapped fly tugs on one part, a signal is sent to the spider at the other end.

 

In the case of a home network, the web is made up of either cables or radio beams. Those two basic options make up the difference between what is called a cabled or wired network versus a wireless network. Today, wireless networking is often less expensive and easier to create.

 

At different points along the web there are junctions called nodes. Those nodes can be in the form of computers, switches or routers.

 

Switches provide a place to plug the cables in that allow a physical connection between communicating computers. Routers perform a similar purpose but with more functions, such as the ability to connect multiple networks together and (as the name suggests) route traffic intelligently between them.

 

In many cases, computers themselves can perform those functions. Software within the system can use the network cards in each computer, with a simple switch in between, to allow communication between them, though routers have become commonplace.

 

Computers, switches and routers aren’t the only possible components of a home network. Familiar devices that go under the general name of peripherals are often part of the home web.

 

One of the reasons for undertaking the expense and effort of creating a network is often to share a printer, fax or scanner among multiple computers. If you splurged for a color laser printer or a fax machine at home, you often don’t want to have to output that much money for each computer.

 

A home network allows sharing those devices.

 

As part of the basic home network system, you’ll often want to include software and/or hardware known as a firewall. A firewall allows for passing some information sent by trusted sources, but blocks other types of data, or that sent from any other source.

 

With wireless networks or any home network connected to the Internet correct network security is a must.

 

To find out more about wireless Networking pop along to the computer repair UK website.

written by Techhead \\ tags: Computer Repair, Computer repair UK, Wireless Home Networking, Wireless Network Installation