Internet as the transmission medium for telephone calls. For users who have free, or fixed-price Internet access, Internet telephony software essentially provides free telephone calls anywhere in the world. To date, however, Internet telephony does not offer the same quality of telephone service as direct telephone connections. 
There are many Internet telephony applications available. Some, like CoolTalk and NetMeeting, come bundled with popular Web browsers. Others are stand-alone products. Internet telephony products are sometimes called IP telephony, Voice over the Internet or Voice over IP products.
* [http://www.voip-guide.org/ voip]
* [http://www.voip-guide.org/voip.php voip]
* [http://www.voip-guide.org/voip-services.php VoIP Services]
* [http://www.voip-guide.org/voip-provider.php VoIP Provider]
* [http://www.softwarematrix.org/ Software]
* [http://www.softwarematrix.org/software.php Software]
* [http://www.softwarematrix.org/system-software.php System Software]
* [http://www.softwarematrix.org/anti-virus-software.php Anti-virus software]
* [http://www.wifi-planet.org/ WiFi]
* [http://www.wifi-planet.org/wifi.php WiFi]
* [http://www.wifi-planet.org/wifi-hotspots.php WiFi Hotspots]
* [http://www.wifi-planet.org/wi-fi.php WiFi]
* [http://www.gpsplanet.org GPS]
* [http://www.gpsplanet.org/garmin-gps.php Garmin GPS]
* [http://www.gpsplanet.org/megellan-gps.php Magellan GPS]
* [http://www.conferencing-guide.com/conferencing.php conferencing]
* [http://www.conferencing-guide.com/video-conferencing.php Video Conferencing]
* [http://www.callcenter-guide.com/predictive-dialers.php Predictive Dialers]      
* [http://www.callcenter-guide.com/call-center.php Call Center]      
* [http://www.callcenter-guide.com/call-center-services.php Call Center Services] 
* [http://www.techomatic.com/predictive-dialers.php Predictive Dialers]
* [http://www.techomatic.com/crm.php Crm]
* [http://www.techomatic.com/dialers.php Dialers]
* [http://www.techomatic.com/call-center.php Call Center]
* [http://www.techomatic.com/voip.php Voip]