Various codecs exist that optimize the media stream based on application requirements and network bandwidth some implementations rely on narrowband and compressed speech, while others support high-fidelity stereo codecs. They transport media streams using special media delivery protocols that encode audio and video with audio codecs and video codecs. Instead of being transmitted over a circuit-switched network, the digital information is packetized and transmission occurs as IP packets over a packet-switched network.

The steps and principles involved in originating VoIP telephone calls are similar to traditional digital telephony and involve signaling, channel setup, digitization of the analog voice signals, and encoding. The terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the Internet, rather than via the public switched telephone network (PSTN), also known as plain old telephone service (POTS). Voice over Internet Protocol ( VoIP), also called IP telephony, is a method and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. So for those wondering how they can use data responsibly during these testing times and also if they will be able to use video-calling apps like Skype and Google Hangouts with reduced bandwidth speed, here's a ready reckoner on how suitable upload and download speed required for making individual or group video calls watching shows and movies on OTT platforms like Netflix, Amazon Prime and others playing multiplayer games uploading important documents, files etc.Methods of delivering voice communications and multimedia over IP networks Not just this all major Over-the-top (OTT) service providers too have unanimously decided to offer only standard definition or 480p content to the users irrespective of their subscription plans. '#COAI urges #subscribers for responsible usage of #data, so that critical services can run smoothly & uninterrupted on #communications infrastructure,' goes COAI's appeal on Twitter. Keeping this in view, the Cellular Association of India (COAI), which represents Reliance Jio, Airtel and Vodafone, has appealed to smartphone users to use data judiciously. With lakhs of professionals working from home, there has been a surge in demand for data. Earlier this week, Prime Minister Narendra Modi announced a 21-day country-wide lockdown.

Internet requirements for skype