Sunday, August 14, 2011

Configuring Quality of Service (QoS) in VoIP applications

Voice over Internet Protocol (VoIP) is on track to replace fixed lines to deliver phone calls to homes and businesses. Vonage VoIP residential area include, Skype and now Google Voice. Companies are replacing obsolete systems with digital service providers today delivery Hosted PBX call, hosted IP PBX VoIP, Virtual PBX and more. If you plan to implement or have already implemented VoIP, you should check the network quality of service (QoS) priorities.
Problems of voice quality of VoIP can have several causes. Prioritization of voice or lack or poor quality of services is a major source of problems in VoIP. This article provides information on the quality of service that should be applied to the network and provides an explanation of what to do.
QoS gives priority to VoIP packets on the network bottlenecks. The point of the most common network bottlenecks, for most homes and businesses, is where the transitions of the data traffic from the local area network (LAN) Internet connection. The LAN can run at speeds of 10 MB to 100 MB (megabits per second) or more. DSL and cable Internet can have a high-speed Internet as low as 256 Kbps (thousand bits per second). In essence, the data is in transition from one freeway to 10 lanes to Highway 1. As VoIP is very sensitive to delays, it must wait its turn to enter the path of a track, an Internet connection.
QoS is implemented via a router examines each packet and ships the specifics of the head of the line. QoS can be achieved by virtual LANs (VLAN) or service code point of differentiation (DSCP) field in the type of service for IPv4 or IPv6 traffic class octet. For those familiar with the seven layers of the network, VLAN operates at layer 2 and layer 3 is DSCP.
VLAN
A VLAN is a virtual network that creates smaller broadcast domains within the local network to ensure efficient use of bandwidth. For example, your VoIP phone can be grouped into a VLAN and equipment in another. The voice VLAN can separate and protect VoIP traffic by service interruptions caused by a virus or worm activity due to Ethernet switches may not bridge IP traffic between VLANs.
VLAN data transport of Internet traffic in general is assigned the lowest priority. Voice VLAN is the highest priority.
DSCP
DSCP is based on the packets are classified and marked as belonging to a specific class. DSCP aware routers implement per-hop behavior (PHB), which implement the mechanisms for sending packets to each traffic class. DSCP is the primary protocol routers use to provide different service levels.
Although a network can implement up to 64 different classes of traffic, some encodings the DSCP field are recommended. Most networks use PHB is commonly defined by default, the transfer speed (EF), Assured Forwarding (AF) and the class selector. The EF PHB is intended for applications that require low delay, low jitter and low packet loss, which makes it suitable for VoIP, video and other services in real time.
The main disadvantage of DSCP is any application can cause the bit to compete with EF and mission-critical traffic on your network. For example, your company can use a virtual PBX instead of a traditional phone system. Calls to the public switched telephone network must pass through the Internet with a loss of delay, jitter and packet low. A router between the LAN and the Internet offers priority packets marked with EF to the Internet. Employees in your company personnel can use Skype, Google Voice or other video services that can compete with the bit and EF and mission-critical traffic to VoIP. This problem is solved by routers convinced that they can inspect all packets and just keep the bits EF packets destined for specific IP addresses.
Although more difficult to implement, VLANs can provide superior voice prioritization if their computers and VoIP phones are different devices. VLAN give priority to all traffic within the subnet that the call signaling. DSCP is easier to implement, but is less accurate. However, small networks, such as small businesses and homes, install a router with DSCP traffic management is sufficient.
Insufficient prioritization of voice is the only source of problems for VoIP. Please read " 7 most common causes problems with voice quality VoIP "to learn about other sources of problems. Visit my site to learn how to Hosted VoIP can help your business. You can contact my engineers with expertise in sales 866-242-6161.


For more information click here

How to optimize your website for Google's top 10 ranking-More steps

Search engine optimization is the process of choosing targeted keyword phrases related to a website, and ensuring that the website places well when those keyword phrases are part of a Web search.

ON-PAGE OPTIMIZATION FACTORS:

The Major Factors Are:

Meta Tags, Header Tags, Text-body tag and Alt image tags:

1- META TAGS:

Meta Tags are code in your HTML that is invisible to the visitors of your web site but are read by some web spiders and search engines.

Meta tags used by a large percentage of the top search engines as one of the main guidelines on how they will index your site

The Main Meta Tags are:

� Title Tag
� Description Tag
� Keyword Tag

Targeting the right keywords:

Do keyword research- it is very important in building traffic

To do your keyword research visit this website http://inventory.overture.com/d/searchinventory/suggestion/

Select a short list of 3 to 4 keywords

Title tag:

The page title should include ONLY your main keywords. The least amount of words you can place in the title, the more weight Google will give to each of the keywords and the higher you will rank.

The title is the most important piece of information search engines use to index Web pages. Include the title of your page and 3-5 important keywords. Format your site title as follows:

Site title, keyword1, keyword2, keyword3

You may use your URL, or the name of your company as your site title.

� Make sure it specifically describes your product or service,
� Makes proper use of 3 or 4 keywords,
� Use between 10 and 80 characters long.

Tips:

� Taken out all of the "ands"
� Replaced one of the "ands" with a "|" character
� Always Combine Your Keywords In The Page Title

Description Tag:

The Meta description tag describes your site's content, giving search engines' spiders an accurate summary filled with multiple keywords.

� Use a descriptive paragraph or sentence that is relevant to your page.
� If possible, use a sentence or paragraph that is present in the content of your page
� Use up to 500 characters, including spaces.

Keyword Tag:

Use a list of keywords that are relevant to the content of your web page. Use your url as the first key word and separate the keywords with commas. Format the key words as follows:

www.myURL.com, keyword1, keyword2, keyword3, �..

Add 5-10 Keywords

� For best results a tag sized between 50 and 250 characters.
� Note that keywords should be separated with commas.

Free Meta Tag Analyzer:

This Meta tag analysis tool will help you analyze your web pages and
check for search engine compatibility.
http://www.hypergurl.com/form.html

More Sites for SEO:

http://www.submitnet.net/
http://www.submitexpress.com/

2- HEADER TAGS:

Headers are used to break entries up into logical sections.

Add h1 header tags- (Place your most important keyword) it's best to place your h1 header tag on the top left hand or top/middle portion of your page.

When Google reads a webpage, it views the text from the top left hand side of the page to the bottom right hand side of the page.

Add h2 header tags- (Place your 2nd most important keyword) should be placed somewhere towards the top half of your webpage.

3- TEXT- BODY TAG:

The body element defines the documents' body. It contains all the contents of the document (like text, images, colors, graphics, etc.).

� When writing the content, try to evenly sprinkle your main keywords throughout the copy. Don't overdo it though.
� Try to mention each keyword in a natural way as you are writing
� Include at least one of the keywords per 1-2 paragraphs, depending on how large your page is.
� Make sure to mention your main keyword at the very top left and the very bottom right hand side of the webpage
� Bolding, italicizing and underlining...Once we've finished writing the copy, we should go through and bold, italicize, or underline some of the keywords only 1 time each, maximum.
� Any keyword must be used 4 times or more in your site's HTML body. This is highly recommended for best ranking results.
� Avoid Excessive Keywords- No word to be used more than 30 times throughout the page.

4- ALT IMAGE TAGS:

ALT tags are images' descriptions.

� Place your keyword 1 in the alt image tag of the very top image in your webpage.
� Place your other 2 keywords plus an extra word like "picture" or "image in the alt image tag of 2 more graphics throughout your webpage.


LOAD TIME ANALYSIS:

If your Web site does not load in 12 seconds or less with a 56k connection, statistics show that about 45% of visitors will leave the site.

� Optimized you site for 56k modem users- Load time 12 second or less.
� Try to keep your homepage under 50k and your other pages under 40k.

Here's a great free tool to help you check your website's load time:

http://www.1-hit.com/all-in-one/tool.loading-time-checker.htm

SEARCH ENGINE GUIDELINES:

Always remember this general rule when building your site: "Search engines do not like to be fooled". Do not try to manipulate your listings through sneaky methods. Provide useful, relevant content, and you will never have to worry about search engine guideline violations.

� Hidden Text - you never hide text.
� Excessive Keywords-Use keywords naturally in sentences and paragraphs.
� No word to be used more than 30 times throughout the page.
� Repeated Keywords- No keywords to be repeated multiple times in a row. We recommend using keywords naturally in sentences and paragraphs.
� Doorway Pages- Doorway pages are discouraged by most search engines.
� Harmful Redirects- Redirecting pages have a hard time being indexed by search engines.
� Frame Issues- It is recommended for sites that use frames to implement a descriptive NOFRAMES tag with relevant text content.
� Macromedia Flash Issues- Don't create all-Flash pages for any content you want to get indexed - instead, put that content in the HTML portion of the page.



Enjoy!

Written by:
Faraj Balousha
Civil Engineer, Architect, Webmaster
Sketch-Plus Inc.,
http://www.sketch-plus.com/
http://www.creating-website-stores.com/help_centre/index.html
http://creating-website-stores.blogspot.com/


For more information click here

Optimize your website for Yahoo

By Jakob Jellinghttp://www.sitetube.comSearch engine optimization is very important to the success of your website. Better search engine ranking means more visitors to your website and, hence, more profits. Your first step should be to optimize your website for the biggest and most commonly used search engines. There are several search engines on this list and one of the most important ones is Yahoo. That is the main reason why you need to know how to optimize your website for Yahoo if you want your website project to succeed.You can use several techniques to optimize your website for Yahoo and improve your Yahoo search engine results. Currently Yahoo is using the Open Directory Project, or DMOZ, and Inktomi's base for ranking web pages. Open Directory Project is a large community of volunteer website editors on the Internet. Yahoo uses the relevancy of the title, description and category meta data from your web pages to determine whether to show your website in the search results. Yahoo also uses some of the technologies that it developed for determining which website to include in the search results.Many of the optimization techniques that are used with other search engines are used with Yahoo too. The main and the most important thing to do to optimize your website for Yahoo is to focus on keywords, title tags and meta tags for your web pages. Selecting the right keywords and key phrases for your web pages is very important. Make sure the keywords you selected represent the content of your web page. Go through the content of your web pages and make sure that you have the right keyword density for each page. Do not, however, overuse you keywords. The content of the web page should remain meaningful after the keyword density optimization process is completed.You also need to include the keywords that you selected for the web page in the title tag and in the description that you will use in the meta tags. Yahoo checks your meta tags during the process of determining the relevancy of your web page. However, you need to vary your title, description and meta tags for each individual page. Optimize your meta tags on all secondary pages in addition to the home page. An addition to all the techniques described above, you need to make each one of you web pages useful to the visitor by providing helpful and important content. Don't just create the web pages that include garbage as it will not help you and can even hurt you. Each of your web pages should also be user-friendly and easy to use and navigate. You can also pay to be listed on Yahoo. Your first step would be to find a way to get listed on Inktomi, since Yahoo uses Inktomi base. Yahoo also offers several paid services to help you get listed on Yahoo fast: Site Match and Site Match Xchange, Pay-For-Performance, and Yahoo! Express.

For more information click here

Symptoms of Partition Corruption

Sometimes when you start you Windows computer or try to access a hard drive partition, the operation may fail and you may encounter any of the following behaviors:

o "Invalid media type reading drive" error with three options: Abort, Retry and Cancel.

o The partition file system is shown as ‘RAW'. Your operating system can not read anything from the hard drive and thus you can not access the data stored on the partition.

o Windows might prompt you to format the hard drive partition with the message- "Disk is not formatted. Do you wan to format it now?" It normally happens because of file system and system files conflict.

o Operating system shows error message- "Sector not found."

o File names shows strange characters

After any of the above problems, your data stored in the hard drive partition becomes inaccessible. You need to figure out the problem and resolve it to gain access of your precious data. You can achieve that by carrying out efficient Partition Recovery.
Grounds of Partition loss issue

You may encounter the above problems due to certain issues with your Windows partitions like corruption or file system damage. It may also take place due to partition table corruption or file system table problem.

The final result would be the loss of your Windows partitions and precious data stored in them. In such cases, you need to go for Partition Recovery to get your valuable data back.
Partition Recovery is the process of retrieving lost Windows partitions by scanning the physical disk. It is of potential help with the use of third party applications known as Partition Recovery Software.

Partition Recovery Software are specially designed to scan your hard drive, locate the lost partitions and then recover them. They are largely automated tools designed to achieve absolute Partition Recovery.

Stellar Phoenix Windows Data Recovery is the high end Partition Recovery Software that offers sheer power to recover lost partitions and volumes. It is capable of handling each and every partition loss scenario due to logical failure. This robust Partition Recovery tool supports recovery from FAT16, FAT32, VFAT, NTFS and NTFS5 partitions. It is compatible with Windows Vista, XP, 2003 and 2000.

For more information click here

How to Solve BCD Corruption in Windows 7

Windows 7 Boot Configuration Data (BCD) store is a database that contains boot-time configuration data. This is a firmware-independent file and is a replacement of boot.ini file used in Windows operating systems earlier to Windows Vista. Once the file get corrupted, a Windows 7 computer loses the ability to boot. Since the file is editable through command-line tool called bcdedit.exe, you can use it to overcome the Windows boot issues. But if the corruption is high or the tool doesn't work, the last alternative is to restore from a backup and/or reinstall Windows. However, while backup is unavailable, you need a Windows Data Recovery solution to recover the lost data.

Consider a practical instance of such problems. You use a Windows 7 based computer and it fails to boot prompting an error that is similar to below:

Boot manager generic failure 0x000000e
Repair Action: Boot configuration data store repair
Result: Failed. Error code = 0x490

After this error message, you cannot access the data that is stored on the hard drive.

Cause

The boot information in Windows 7 BCD store is corrupt.

Solution

To solve the above discussed issue, you need to start Windows RE (Recovery Environment) in order to run Bootrec.exe tool as follows:

Insert Windows 7 installation disc in the drive to start your computer from it
Press any key when prompted for
Specify the language, currency, input method and other options
Click 'Repair your Computer' and select the target operating system, click 'Next'


Choose 'Command Prompt' under 'System Recovery Options'
Type 'Bootrec.exe' and type ENTER

Once the tool is started, you can rebuild the BCD store using '/RebuildBcd' option. If this doesn't help, you can export the BCD using the following set of commands:

bcdedit /export C:BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:bootbcd bcd.old
bootrec /RebuildBcd

If the problem persists and your data remains inaccessible, restore it from backup or use a Windows Partition Recovery utility. Reinstall Windows if backup is available. A Windows Data Recovery can scan and recover the lost data safely without requiring any prior technical skills.

Stellar Phoenix Windows Data Recovery is an efficient utility that recovers data from lost, missing or damaged Windows partitions. The Windows Partition Recovery software supports Windows 7, Vista, XP, 2003, and 2000. The software is equipped with unique and powerful features like Disk Imaging, Disk Cloning, Drive Status, and more.




For more information click here

Unreadable Word 2003 Document and Word Recovery

Sometimes when you try to open a Word document in Microsoft Office Word 2003, it shows that Word is unable to open the document. It makes the content of Word file inaccessible and cause data loss. This situation occurs due to file corruption. So, you need to perform Word Recovery to repair the affected document and regain your valuable data.

When you attempt to open a damaged Microsoft Office Word 2003 document, the document may not open with below error message:

"Word was unable to read this document. It may be corrupt.
Try one or more of the following:
* Open and Repair the file.
* Open the file with the Text Recovery converter.
(C:Documents and Settings...test.doc)"

Such Microsoft Word behavior leads to data loss. You should find the cause of this problem and perform Word Recovery.

Cause
As stated in the above error message, the problem takes place due to Word document corruption. Word corruption prevents the document from opening normally and thus the data becomes inaccessible.

Resolution
To resolve this behavior, install the latest service pack of Microsoft Office Word 2003 that includes a hotfix for this problem. After installing the service pack with hotfix, practice the following steps to enable the hotfix:

. Open Registry Editor and locate the following registry entry:
HKEY_CURRENT_USERSoftwareMicrosoftOffice11.0WordOptions
. Go to the Edit menu, highlight New and select DWORD Value.
. Type BulletProofOnCorruption and press ENTER.
. Right-click BulletProofOnCorruption and click Modify.
. In Value data box, type 1 and click OK.
. Exit Registry Editor and restart Word.

This method is helpful in solving most of such issues, but it can not repair the Word document that is already corrupted. To repair the damaged document, you should opt for Word Recovery Software.

These are powerful applications that can repair and restore damaged Word documents in almost all Word corruption scenarios. The software are capable of retrieving all Word objects including tables, text, images, drawings, charts, clip arts, headers, footers and footnotes.

You can easily use word repair software without prior technical knowledge as they come equipped with simple and graphical user interface. These software are completely safe and non-destructive to use with read-only nature.

Stellar Phoenix word recovery is the most efficient tool to repair and restore corrupted Word documents. It supports Microsoft Word 2007, 2003, XP (2002) and 2000. It is compatible with Windows Vista, XP, 2003, 2000 and NT.


For more information click here

How to expand system partition on Basic Disk and Dynamic Disk?

As applications continue to be installed into the Windows system, suddenly one day find the system partition do not have enough free disk space, and when every time the system starts, Windows always prompts the following information:
You are running out of disk space on SYSTEM (C:), To free space on this drive by deleting old or unnecessary files, click here...

In this case, we have to delete the unwanted file to get a better free space in order to ensure the normal operation of Windows. However, deleting files is not the best way, because my system disk have a total of 250GB, the system boot partition (M:) is only 20GB, and 230GB was divided to data partition (N:), it is clear that (N:) space is large enough, and now the best approach is from the (N:) divide 60GB to (M:), so that you can permanently solve the problem.

To expand the system boot partition and increase its free space, in Windows 2000, Windows XP and Windows 2003 era is very difficult to do, because their Disk Management did not provide the functions of extending or shrinking the partition, this would have to use third-party tools such as Partition Magic, Disk Director, and other partition management software to accomplish this extending.

However, in Windows Vista, Windows 2008 and Windows 7 times, it is no longer a difficult task, because Disk Management of Vista, Win2008 and Win7 has been in-built expanding volume and shrinking volume, which is very easy to use without relying on 3rd party partition utilities. At the same time, this feature can not only resize the basic partition on a basic disk, but it can also resize the dynamic system volume on a dynamic disk. Yet partition magic and other disk management tools can not handle dynamic disks. Thus, resizing a dynamic disk volume is indeed a good feature on Vista, Windows 7 and Windows 2008.

Introduction Windows disk management to here, more information, please visit: http://www.extend-partition.com/extend-system-boot-partition.html

For more information click here