Skype has good audio conferencing. You should also look into Microsoft's audio conferencing software. I believe they are the best.
Audio conferencing can be conducted through services such as Momentum conferencing, Accutel and Telemerge. Phone company provides such as Bell and Telus also provide audio conferencing options.
Almost every phone allows you to use audio conferencing. Some have video and audio conferencing but most new phones, no necessarily just smart phones, provide the service.
Audio confrencing providers have capabilities that are highly dependent on your needs as a customer. If you are looking for audio conferencing capabilities without video conferencing, you can utilize Skype Business, which is a free service popularly used in offices for conferences now.
BT Conferencing not only provides video conferencing services but they also provide audio conferencing services. They also provide web conferencing and streaming tools.
The technology that makes audio visual conferencing possible includes internet connection, wi-fi, audio recording and transmission, and video recording and transmission. All of these are included in a webcam.
Budget Conferencing is a company that offers affordable audio and web conferencing. Their official website provides a free trial for home offices and small businesses.
AT&T sells good audio conferencing service in Boston and many other places. You can either go into one of their many stores or check out their website. There is a number on the website so that you can call and talk to a representative if you don't want to go into the store and talk to someone about the service you are looking into from them.
Audio conferencing is just sound. Videoconferencing adds live video or motion pictures.
Audio Web Conferencing used a technology called voice over internet protocol, commonly referred to as VoIP. An example of this would be Vonage or Skype. With this technology it is possible to have a conference call, using a computer rather than a telephone. This can be done either with picture and audio, like a video call, or with audio only.
Most telephone service providers offer conference calling and audio conferencing facilities.
There are many providers of audio conferencing services; the best provider for you will depend on your specific needs and your budget. Some of the most popular include Microsoft Office Live Meeting, GoToMeeting, and ACT Conferencing.
The cheapest way would be to make use of free software. Skype offers free audio and video conferencing services that have a high degree of reliability.