VoIP Solutions
In a traditional PSTN, the quality of service of the calls and continuous connection are very dependable; so, in order for people to switch to IP telephony, the same quality considerations must be maintained or excelled. With IP telephony consisting of distributed elements, the entire architecture has to be strategically managed to provide good service while at the same time reducing the overload and maintenance costs.
Voice over Internet Protocol, or VoIP, solutions include components such as end-user devices, PBX, gateways and gatekeepers, IP network and several protocols that take care of the issues and operations of a transaction. When a call is initiated, there are distributed arrays of routers, which manage the call functions such as identification of the destination, maintenance of the connection between the IP and PSTN, billing management, and alerts about the incoming transaction.
In this competitive VoIP market, VoIP solutions must be able to meet needs such as high-speed interface, predictable performance, quality of service and security. These factors drive application development and infrastructure deployment. The routers should be able to handle thousands of calls through increased bandwidth, and they should also match the interface speeds in order to forward the IP packets. The quality of service is maintained in the router by addressing concerns such as exact sequencing of the packets so that the call is clear and meaningful. Security features are to be implemented to prevent hackers from accessing the infrastructure. This is managed by enumerating the routers, which function as gateways and controllers as private addresses, so they are not accessed through the public Internet.
A robust infrastructure deployment is complemented by application development that adheres to various protocols that are mostly governed by International Transmission Union (ITU) and Internet Engineering Task Force (IETF). Several protocols are available, and the necessity of the implementation depends upon the product groups. Signaling System Seven (SS7) is a protocol that manages the establishment and termination of calls. H.323 is a product-based communication protocol that signals the call to the IP network and the end user.
RTP protocols address the concerns of real-time receipt of calls so that the calls arrive in the same sequence. Media Gateway Control protocol coordinates the actions of gateways. Session Initiation Protocol (SIP) handles the setup and tear down of multimedia sessions between speakers.
With a combination of infrastructure and protocol, VoIP solutions enable the customer to establish calls at a fraction of the rate of PSTN lines, while at the same time maintaining quality.
VOIP provides detailed information on VOIP, VOIP Providers, VOIP Phone System, VOIP Solutions and more. VOIP is affiliated with Wireless IP Phones.
Tags: voip, voip phone system, VoIP providers, voip solutionsCell Phones - What Do You Think
Cell Phones - or Mobile Phones, depending on which part of the world you reside in. I wonder, is it possible to go anywhere in the world without seeing one of these instruments. I am a resident of the Oceania region and I look upon cell phones with a mixture of humour, disdain, irritation and I guess, a little admiration.
This technology permits us to communicate with each other from almost any place on earth. So long as you pay the money to your provider you can make a call to your landline home telephone from anywhere, using “agents” within the country you are visiting.
As with everything, technology improves(?) every day. So it is with cell phones. I am sure it won’t be long before we can put them on a key ring! It doesn’t seem such a long time ago that my son had a phone that was about the size of half a house brick, and if you were going to try to clip it to your belt buckle, there was a likelihood that your trousers would finish up around the ankles.
Pricing, naturally, has made cell phones much more accessible to the general public and evidently this suits the younger members of our society. Although it still somewhat amazes me that even with prices being quite reasonable, how is it possible for schoolchildren to afford what is basically still an accessory?
From an irritating point of view, and not wishing to sound pedantic, I find it somewhat invasive to overhear a conversation on a cell phone, say in a restaurant, while enjoying a pleasant meal, the recipient informing the caller where they are and what they are eating. Who said the art of conversation is dead?
On a more serious note, cell phones can also be a lethal weapon in the wrong hands. How so I hear you say? How many times have you been driving and seen the “one-handed driver” with cell phone in the other hand having an extended conversation while travelling at the speed limit on the freeway? Thankfully, most civilised societies have banned this crazy practice.
Don’t think that by reading this article that I am anti-cell phone. I most certainly am not. I find that having the phone to hand can be more than useful in emergencies. I am only making tongue in cheek remarks as a little nudge in the ribs of the world of cell phone users.
Which brings me to my conclusion, we all know that this type of phone, as with all other commercial products, is there to make money for the manufacturers, retailers, providers and give pleasure and convenience to the users. And so be it.
My final and I consider the most amusing thing I have seen quite recently with cell phones, concerned an advertisement for a Nokia phone (or was it Motorola). Anyway, a list of advantages for this particular model were proffered for the public: camera, message service, make a cup of tea, all sorts of things. What was evident was that the SIXTH item on the list of the selling points was the first reference to actually making a telephone call!!
Ah, what wonderful times we live in!!
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Michael Russell
Your Independent guide to Cell Phones
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Operating Systems in Smart Phones
This article intends to highlight the various Operating Systems (OS) currently being deployed by various mobile phone manufacturers. There are many OS under development for the smart phones and we here only look at the most popular ones.
The popular operating software systems for Smart Phones are
1. Symbian OS
2. Embedded Linux
3. Java (J2ME)
4. Windows Mobile
Symbian OS is the most popular and widely used smart phone OS, enjoying more than 50 % market share with strong support from smart phone manufacturers including but not limited to Nokia, Sony Ericsson , Samsung etc.,
The Symbian OS is a highly developed version of Psion’s 32-bit EPOC platform.
Symbian was formed as a spin-off from Psion Software Ltd, co-owned by Psion, Nokia, Ericsson and Motorola. The main purpose of the spin-off was to improve and develop advance software platform for smart phones.
Symbian OS is the name behind the popular Series 60 phones in the mobile world. Symbian is the licensing company that develops and supplies the advanced , open standards operating system for data enabled mobile phones.
The processor used in the Smart Phones, to process various information, is named as ARM Processors i.e., Advanced RISC (Reduced Instruction Set Computers) Machines. They drive popular high-end phones like Nokia, Panasonic and Samsung.
ARM Processors are capable of running Symbian OS, Linux OS and Windows Mobile.
The table given below summarizes the various operating systems being deployed by the manufacturers onto the latest Smart Phones.
SDK Series Version Models
UIQ UIQ 3.0 Symbian OS version 9.1 Sony Ericsson P990
UIQ 2.1 Symbian OS version 7.0 Sony Ericsson P910
UIQ 2.1 Symbian OS version 7.0 Sony Ericsson P900
UIQ 2.1 Symbian OS version 7.0 Motorola A1000
UIQ 2.0 Symbian OS version 7.0 Sony Ericsson P800
UIQ 2.0 Symbian OS version 7.0 Motorola A902 Benq P30
S60 S60 3rd Edition Symbian OS Version 9.1 Nokia E60, E61,E70 N71,N80, N91, N92, 3250
S60 2nd Edition FP3 Symbian OS Version 8.1 Nokia N70, N90
Symbian OS Version 8.0 Nokia 6630, 6680, 6681,6682
S60 2nd Edition FP1 Symbian OS Version 7.0 Nokia 3230,6670, 7610,6620 ,62600
Panasonic X700, X800 Samsung D720
S60 2nd Edition Symbian OS Version 7.0 Nokia 7650, 3650, 3600, 3660, 3620
Nokia N-Gage XSiemensSX1
S60 1st Edition Symbian OS Version 6.0 Nokia 6600
S80 S80 Nokia Series Developer Platform 2 Nokia 9300, 9500
The author is running a brick & mortar business ie. selling Smart Phones in bulk ( Wholesale). More information can be obtained by visiting
http://www.benzeneinternational.com and http://benzeneinternational.blogspot.com