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Voip phone service

By now it's become a mantra: The Session Initiation Protocol (SIP) is the future of VoIP. The vendors are saying it, and the network designers are building for it. Even Cisco Systems, the only major VoIP vendor not to offer native SIP client support, will add the capability to its next major release of Cisco Call Manager expected at the end of the year. All this begs the question, just what should network architects be considering when they evaluate an IP PBX?

Advantages of using VOIP

Using VOIP you can effectively cut down your phone bills, since you just pay to your regular internet connection and small fees to your VOIP service provider. Setting up conference calls with VOIP is very easy.

You can even set up your own network and don't need any special equipments like PBX etc. You can call to any local telephone, mobile, long distance number or any international number. More importantly, the person you are calling does not need any special equipment; just a regular telephone.

Many additional features like call forwarding, call tracing, reminders, caller ID are readily available. You can even assign a local telephone number to your VOIP phone set, and just need a fast internet connection to use your VOIP service anywhere in the world.

VoIP Dilemna

VoIP applications and services require data transfer in real time. During a call an interactive data voice exchange takes place. Unfortunately, TCP/IP is not best suited for this purpose. Sometimes you have to wait for few seconds, to hear other side answering. But with recent development we are streaming the flow of voice signals in a improved manner but still the quality is not that sharp with respect to PSTN lines.

 

To answer that question, we assembled a panel of leading VoIP architects and designers and asked them to compose a wish list of ideal telephony requirements (see "The Incredible Panel"). Together, the group mapped out exactly what the Incredible VoIP Architecture should look like. They defined the core of the SIP network--the call-stateful proxy--and prescribed the resiliency, scalability, and E-911 features that such a proxy should deliver. The panel also took into account the remote office, defining an integrated device that provides both remotely managed VoIP and the right mix of security functions. No VoIP solution would be complete without effective management, of course. The panel's ideal VoIP management solution not only integrates with the existing management infrastructure, but allows network architects to define global policies for the telecom network, as well as specify configurations for particular call servers.

Yet for all its similarities to the big VoIP systems on the market today, the Incredible VoIP Solution breaks new ground in many areas. Its fully distributed and open architecture is, if not unique, at least rarely offered in highly scaleable corporate IP telephony products. The extensive use of presence technology foreshadows the type of IP phones that will be possible in years ahead. Even minor details, such as improving reboot times by downloading configuration updates rather than the full configuration files, are something that many VoIP systems still lack today.

VoIP stands for Voice over Internet Protocol. By using VoIP phones and technology you can effectively use the internet to make phone calls. This is done by placing the voice calls on network which encrypts the voice in data packets at one end and encrypts it in voice calls at the other end. This encryption and decryption is from a analog signal (i.e. your voice call) into digital signal (data packets) and again into the analog signal.
 

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