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Security, Stability, and Interoperability Issues on VoIP Implementation

Now we have accepted that VoIP is no longer just a phone service, it has become feature rich as it merges with computer configurations. The VoIP’s existence has changed considerably over the last few years, coupled with the availability of broadband connection to the Internet, plus leaps in multimedia technology in which virtual operations with remote sites becomes more enhanced, makes VoIP service a viable alternative to traditional communication offerings.

Cost savings is not the only driving force for VoIP implementations, enterprises have to consider some business aspects that VoIP can bring about. VoIP creates potentials for applications that could not have been done before. Collaboration, integration, and interactivity between employees and applications are one of the several business benefits that enterprises can derive from VoIP adoption. Nevertheless, amid euphoria of VoIP technology, there are three important aspects to look at before a company goes VoIP. In the following paragraphs I will summarize the aspect of security, stability, and interoperability that play a key role in the successful implementation of VoIP.

1. Security

VoIP implementations may expose new security risks and challenges that somehow become greater concern than quality and cost-efficiency among vendors and users. VoIP networks are vulnerable to all the same security risks as traditional IP data networks, including:

  • Denial of Service (DoS), viruses, worms,
  • Toll fraud and unauthorized access,
  • Spoofing, and port scanning.

It is recommended that organizations should adopt a layered, defense-in-depth security strategy to address the issue with the increasing proliferation of new Internet-borne attacks and malicious activities in recent years. In this architecture, the network is segmented into secure zones protected by layers of firewall, intrusion prevention, and other security services. This strategy allows the organizations to logically split and secure voice and data networks in front of individual voice and data components and between interactive points in the network.

2. Stability

One of the main issues of VoIP is the amount of bandwidth required for each call. There must be adequate bandwidth reserved and the quality of the link must be well maintained throughout each call to ensure the users are not affected. As the very nature of VoIP call is real-time, any disruption during the call would be easily noticeable and unacceptable. The two issues that enterprises usually have to deal with here are bandwidth and quality of service (QoS).

VoIP calls need a data transmission speed of 64kb/s to produce the quality of voice comparable to that of a normal telephone call. That 64kb/s channel needs to remain open and unaffected for the duration of the call. Theoretically, VoIP installations would not allow such a huge bandwidth to be allocated for VoIP alone. Therefore, there needs to be a compression taking place to compact the voice data into a considerable size before it gets transmitted over a packet switching network. G.723 codec that is incorporated in VoIP standard protocol H.232 can take a 64kb/s stream of data and squash it down to a mere 5.5kb/s or so. Generally, for VoIP to work reliably over WAN links, there has to be low jitter, low packet loss, a considerably high-speed connection between the endpoints, and less than 200ms delay.

3. Interoperability

Compatibility between VoIP equipment from different vendors is a very important aspect to boost the use of VoIP products. Without standardized quality of service mechanisms businesses would need to buy all the equipment and the QoS server from the same manufacturer. The VoIP world seems to be divided between many vendors with reluctance to establish interoperability and some who are trying to be end-to-end supplier but at the same time worried about interoperability. The protocols used in VoIP communication are still considered fairly complex in comparison to most of the other protocols involved in Internet applications. SIP (Session Initiation Protocol – a signaling protocol for Internet conferencing, telephony, events notification, and instant messaging), that is regarded as simple and elegant the other protocols, is still not efficient.

On the bright side, however, SIP is approaching status as an IETF (Internet Engineering Task Force) standard, after several years of work. With the recent version, it has achieved a greater amount of stability and changes are becoming smaller and smaller. Phone switch companies such as Nortel have recently begun supporting SIP, and now the manufacturers of handsets and related devices will soon ramp up their support. Motorola, Avaya, and Proxim have made collaboration on the creation and deployment of IP telephony solutions that will deliver new extents of communication mobility and network connectivity.

Finally, with these three VoIP aspects covered, businesses will be able to maximize their investment by applying it as the backbone of internal communication such as phone conversation, videoconferencing, instant messaging, faxing, etc. Another area that will widely make use of VoIP is call centers, in which Web contacts, virtual operations with outsourcers overseas, and remote sites, such as home agents, all could improve the customer experience. New VoIP applications that we have not thought about may also come into existence as the services generates more business and profits for companies.

Alienware X51 Dell PC Guide – A Mini-Desktop With Plenty of Power, Speed, and Space

The Alienware X51 PC is a mini-gaming desktop by Dell. You can easily place it anywhere in your home due to its compact size. The tower can be placed vertically or horizontally on any flat surface. Don’t think that its compact size holds it back, however, as it’s still faster and more powerful than the average desktop. It’s also highly customizable and upgradable, so you can add more hardware to it later on down the road.

It comes with a variety of advanced features, such as the AlienFX lighting technology and AlienFusion management controls. The lighting technology gives users access to 8,000 unique lighting combinations. It’s up to you how you want to customize the lighting scheme of your desktop. As for the AlienFusion, the user is in charge of power management controls. Lower the settings when you want to preserve energy and crank them up whenever you need an extra boost of power.

The great thing about Alienware X51 is that it’s inexpensive compared to other gaming desktops. It’s a great starter entertainment PC. Despite its small sizes, it’s still expandable. The components can be upgraded later on down the road. There is plenty of room for an additional graphics card, CPU, and memory. Keep the machine up to date by adding new hardware when you need it.

There are a number of dual and quad-core processors from which you can choose. The desktop can handle up to a 2nd generation Intel Core i7 processor with Turbo Boost technology. Its CPU should be able to handle any program you throw at it. An i3 model is the default option. If you need more than this, you can simply select an i5 or i7 when placing your order online.

Processors deliver the power, and memory delivers the speed. Your memory options go up to 8 GB dual-core channel with 1333 MHz (system memory). This is enough memory to take on high-performance multimedia and gaming applications with ease.

No entertainment PC is complete without a NVIDIA video card. This one comes with a 1 GB NVIDIA GeForce GT 640. You won’t have to worry about your games lagging or your videos getting choppy. With this kind of graphics power, you can easily run your favorite multimedia smoothly. Thanks to a 1 TB SATA hard drive, you’ll be able to save all of you files on the computer. It’s almost impossible to run out of space!

If you read any Alienware X51 reviews, you’ll see that consumers are very happy with the amount of power they are getting. It really is a great PC that’s designed to last for a very long time. Its expandability alone makes it worth every penny.

The Best iPad Application Development Services Around

The iPad application development is making the owners more satisfied with their gadget. The world of iPad applications is massive, because there are several hundreds of new apps that are regularly developed all over the world. Most of the new apps are fascinating with their utility, entertainment, and design values. These stunning apps enable the gadgets to offer you easy solution for your needs. The iPad itself is one of the most flexible technology tools in today’s world, and the newly developed apps enhance its usability and user-friendliness even further. With the ever increasing need for computation, today companies are manufacturing a great range of apps for meeting different purposes.

What to expect?

Today, the market is flooded with numerous iPad app development companies that are creating and releasing groundbreaking apps. Their apps are innovative and easy to use. From finance, gaming, multimedia and editing to planning and learning, all kinds of different apps are available for the iPad. The most important thing to do is to create apps that can help people with their needs. The app developing companies are doing exactly that. The application development services have great teams of designers, planners, and developers. They have people who are trained, skilled and experienced. They understand what their clients need, and they will develop apps accordingly.

An iPad application development company has a plethora of responsibilities on its shoulders. The initial step they need to ensure is that their apps are compatible with iPad. Even if the apps are not designed to be made available in Apple store, they must be suitable and compatible for the device. The quality of application is another thing that they need to look into. Furthermore, the company should ensure the user’s satisfaction in terms of usability and end result. The best apps are those which are easy to use, and come with great utilities. These companies develop apps both for their own product shelf and on receiving an order.

Finding iPad application development services

There are a few things which make an iPad application development service provider stand out from the others. Here are a few things that make an application developing company best:

They must have developers who are technically knowledgeable and skillful. The developers should have creative ideas and experience

Professional attitude is very important

They must understand the value of finishing projects in time

Support and communication are two main aspects that make a development company suitable for clients

Budget is a critical factor. The best iPad app development companies never over price their products

They surely need to have the best working environment and modern tools

The best services including application submission and marketing too

Even if you know what to expect from the company you choose, locating the best one is never easy. You can always use the internet to find company ratings and user made reviews for reference. However, the smartest thing to do is to find companies that develop apps for iPad online and call them. The best iPad application development companies will walk an extra mile for you to deliver nothing short of brilliant products.