Videotelephony

portable device to make telephone calls using a radio link

Skype () was a proprietary telecommunications application operated by Skype Technologies, a division of Microsoft, best known for IP-based videotelephony, videoconferencing and voice calls. It also had instant messaging, file transfer, debit-based calls to landline and mobile telephones (over traditional telephone networks), and other features. It was available on various desktop, mobile, and video game console platforms.

technology for transmitting voice and other data over IP networks

Lenovo Group Limited, trading as Lenovo ( , ), is a Hong Kong–based Chinese-AmericanMultiple sources:

Koninklijke Philips N.V. (), simply branded Philips, is a Dutch multinational health technology and former consumer electronics company that was founded in Eindhoven in 1891. Since 1997, its world headquarters have been situated in Amsterdam, though the Benelux headquarters is still in Eindhoven. The company gained its royal honorary title in 1998.

4G refers to the fourth generation of cellular network technology, introduced in the late 2000s and early 2010s. Compared to preceding third-generation (3G) technologies, 4G has been designed to support all-IP communications and broadband services, and eliminates circuit switching in voice telephony. It also has considerably higher data bandwidth compared to 3G, enabling a variety of data-intensive applications such as high-definition media streaming and the expansion of Internet of Things (IoT) applications.

thumb|A USB modem for 3G plugged into a laptop.

form of communication over the Internet

alt=Small box with a lens inside|thumb|A Logitech-branded webcam attached to a laptop A webcam is a video camera which is designed to record or stream to a computer or computer network. They are primarily used in video telephony, live streaming and social media, and security. Webcams can be built-in computer hardware, like a laptop, or peripheral devices, and are commonly connected to a device using USB or wireless protocol.

process of encoding information using fewer bits than the original representation

Cisco Systems, Inc. (using the trademark Cisco) is an American multinational technology conglomerate corporation that develops, manufactures, and sells hardware, software, telecommunications equipment and other high-technology services and products focused on networking, cyber security and AI. Cisco specializes in specific tech markets, such as the Internet of things (IoT), domain security, videoconferencing, and energy management, including products such as Webex, OpenDNS, Jabber, and Jasper. The company is headquartered in San Jose, California and, as of December 2025, has a market capitaliz

group of smartphone models produced by Apple Inc.

South Korean multinational electronics corporation

smartphone from Apple

group of smartphone models produced by Apple Inc.

deprecated instant messaging client

thumb|ISDN telephone

group of smartphone models produced by Apple Inc.

seventh-generation smartphone by Apple Inc., released in 2013

former instant messaging service

thumb|3G sign shown in notification bar on an Android powered smartphone

type of conference

voice-over-IP communications protocol

company responsible for the Zoom software

hardware or software components that connect between two network systems

WebM (from "Web Movie") is an audiovisual media file format. It is primarily intended to offer a royalty-free alternative to use in HTML video and HTML audio elements. It has a sister project for images: WebP. The development of the format is sponsored by Google, and the corresponding software is distributed under a BSD license. WebM was a collaborative effort first released in 2010.

video-communication app

digital mobile phone technology that allows improved data transmission rates as a backward-compatible extension of GSM

video-conferencing software

Avaya LLC(), formerly Avaya Inc., is an American multinational technology company headquartered in Morristown, New Jersey, that provides cloud communications and workstream collaboration services. The company's platform includes unified communications and contact center services. In 2019, the company provided services to 220,000 customer locations in 190 countries.

line of Windows-based smartphones and tablet computers designed and marketed by Nokia

thumb|250px|A telepresence system in 2007

MPEG-4 is a group of international standards for the compression of digital audio and visual data, multimedia systems, and file storage formats. It was originally introduced in late 1998 as a group of audio and video coding formats and related technology agreed upon by the ISO/IEC Moving Picture Experts Group (MPEG) (ISO/IEC JTC 1/SC29/WG11) under the formal standard ISO/IEC 14496 – Coding of audio-visual objects. Uses of MPEG-4 include compression of audiovisual data for Internet video and CD distribution, voice (telephone, videophone) and broadcast television applications. The MPEG-4 st

thumb|right|MPEG-2 is used in Digital Video Broadcast and DVDs. The MPEG transport stream, TS, and [[MPEG program stream, PS, are container formats.]]

standard for video compression

defunct video chat app by Google

FaceTime is a proprietary videotelephony product developed by Apple. FaceTime is available on supported iOS mobile devices running iOS 4 and later and Mac computers that run and later. FaceTime supports any iOS device with a forward-facing camera and any Mac computer equipped with a FaceTime Camera. FaceTime Audio, an audio-only version, is available on any iOS device that supports iOS 7 or newer, and any Mac with a forward-facing camera running OS X 10.9.2 and later.

2011 smartphone manufactured by Nokia

instant messenging protocol

instant messaging service

open source software implementing a private branch exchange for various Voice over IP protocols

2012 smartphone manufactured by Nokia

video compression format, a successor to H.264/MPEG-4 AVC

Jitsi (from , "wires") is a collection of free and open-source multiplatform voice (VoIP), video conferencing and instant messaging applications for the Web platform, Windows, Linux, macOS, iOS, iPadOS, watchOS, and Android. The Jitsi project began with the Jitsi Desktop (previously known as SIP Communicator). With the growth of WebRTC, the project team focus shifted to the Jitsi Videobridge for allowing web-based multi-party video calling. Later the team added Jitsi Meet, a full video conferencing application that includes web, Android, iOS, iPadOS, and watchOS clients. Jitsi also operates me

2012 smartphone model

smartphone by Nokia, typically running Windows Phone 7

Mid-range Windows Mobile smartphone designed and built by Nokia

smartphone by Nokia, typically running Windows Phone 8

aMSN was a free Windows Live Messenger clone. aMSN attempted to emulate the look and feel of Windows Live Messenger, and supported many of its features. It had been downloaded approximately 40 million times as of January 2011, making it the 21st most downloaded project on SourceForge.

open source instant messaging and VoIP client

H.323 is a recommendation from the ITU Telecommunication Standardization Sector (ITU-T) that defines the protocols to provide audio-visual communication sessions on any packet network. The H.323 standard addresses call signaling and control, multimedia transport and control, and bandwidth control for point-to-point and multi-point conferences.

smartphone in the Nokia Lumia series

iSight is a brand name used by Apple Inc. to refer to webcams on various devices. The name was originally used for the external iSight webcam, which retailed for US$149, connected to a computer via a FireWire cable, and came with a set of mounts to place it atop any then-current Apple display, laptop computer, all-in-one desktop computer, or round surface.

VP9 is an open and royalty-free video coding format developed by Google.

Ekiga (formerly called GnomeMeeting) was a VoIP and video conferencing application for GNOME and Microsoft Windows. It was distributed as free software under the terms of the GNU GPL-2.0-or-later. It was the default VoIP client in Ubuntu until October 2009, when it was replaced by Empathy. Ekiga supports both the SIP and H.323 (based on OPAL) protocols and is fully interoperable with any other SIP compliant application and with Microsoft NetMeeting. It supports many high-quality audio and video codecs.

smartphone

windows smartphone

iChat (previously iChat AV) is a discontinued instant messaging software application developed by Apple for use on its Mac OS X operating system. It supported instant text messaging over XMPP/Jingle or OSCAR (AIM) protocol, audio and video calling, and screen-sharing capabilities. It also allowed for local network discussion with users discovered through Bonjour protocols.

Webex by Cisco is an American subsidiary of Cisco Systems that develops and sells web conferencing, videoconferencing and contact center as a service applications. It was founded as WebEx Communications, Inc., in 1995 and acquired by Cisco Systems in May 2007. Its headquarters are in San Jose, California.

instant messaging client