Voice Conferencing with your internet phone

Can VoIP Conferencing be possible without ISDN?

Once upon a time, this technique was very costly. Video teleconference systems throughout the 1990's rapidly developed from highly costly proprietary equipment to VoIP conference software and network requirements that is a standards-based technology available to the general public at a tolerable cost. In the 1990s, IP (Internet Protocol) based video conferencing became a possibility and it has progressed ever since.

The core technology used in a video teleconference (VTC) system is digital density of video and audio streams in real time. The PC material or VoIP conference software that performs compression is called a codec (coder/decoder). The use of audio modems in the transmission line enables the use of POTS (Plain Old Telephone System) in several low-speed applications since they convert the digital pulses to or from analog waves in the audio spectrum breadth.

Web Conferencing

In recent years, IP based video conferencing-or the web conference-has materialized as customary communications interface as well as a standard provided by VTC manufacturers in their long-established ISDN-based systems. Though, because of the proliferation and price point of the Internet-broadband in particular- there has been a strong spurt of growth in the web conference and use of H.323, IP VTC. H.323 has the benefit that it is available to anyone with a high-speed Internet connection, such as DSL.

Furthermore, an attractive aspect for IP VTC is that it is so much easier to arrange for use with live phone conferences via web conferencing calls along with data collaboration. These combined technologies enable users to have a much richer multimedia setting for live meetings, collaboration and presentations.

High speed Internet connectivity has changed to receive more availability at a reasonable cost and the cost of video capture and display technology has decreased. For phone conferences via web conferencing, personal video teleconference systems based on a webcam, personal computer system, software compression and broadband Internet connectivity have become affordable for the general public. Also, the computer supplies used for this technology have continued to improve in quality, and prices have dropped dramatically. The availability of free software (often as part of chat programs) has made software-based VoIP conferences accessible to many.

For many years, several have envisioned a future where telephone conversations will take place as actual face-to-face encounters with video as well as audio. Desktop PC videoconferencing promises to make this a reality, although it remains to be seen whether there is widespread enthusiasm for VoIP conferences.

VoIP in Web Conferencing

The International Telecommunications Union (ITU) has three umbrellas of principles for the VoIP conference.

• 1. ITU H.320 is known as the benchmark for public-switched telephone networks (PSTN) or VTC over integrated services digital networks (ISDN) basic rate interface (BRI) or even primary rate interface (PRI). H.320 is also utilized on dedicated networks, such as T1 and satellite-based networks.
• 2. ITU H.323 is known as the benchmark for video over Internet Protocol (IP). This same standard also pertains to Voice over IP.
• 3. ITU H.324 i s the benchmark for transmission over POTS, or even audio telephony networks.

The VoIP conference can enable individuals in faraway places to have meetings on a brief notice. Time and money that was once spent in traveling can be used instead to have quick meetings.

A video conference, or the VoIP conference, is a set of interactive telecommunication technologies which enable two or more locations to interact by way of a two-way video and audio transmission concurrently. It has also been referred to by web conference services as visual collaboration and is a type of groupware.

Analog video conferences could be recognized as early as the advent of the television. Such conference call web conferencing systems consisted of two closed-circuit television systems connected via cable. During the first manned space flights, NASA used two radio frequency (UHF or VHF) links, one in each direction. Television network channels routinely use this kind of video conferencing when reporting from d istant locations, for instance. Then mobile links to satellites using particular vehicles became commonplace. More information can be found on any conference solution web site.

Conference call web conferencing or Video conferencing was first demonstrated in 1968. Today, simultaneous videoconferencing among three or more remote points is viable by measures of a Multipoint Control Unit (MCU). This is a link that interconnects calls from several sources, such as the web conference call. All parties call the MCU unit, or the MCU unit can even call the parties which are going to partake in the web conference call, in sequence.

Web conference services arrived to the masses and free services as well as software, such as NetMeeting, Yahoo Messenger, MSN Messenger as well as others brought inexpensive, but low-quality VTC. Other IP services can be found on any conference solution web site like www.infoworld.com for example.

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