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Internet Low Bitrate Codec
Internet Low Bitrate Codec (iLBC) is a royalty-free narrowband speech audio coding format and an open-source reference implementation (codec), developed by Global IP Solutions (GIPS) formerly Global IP Sound (acquired by Google Inc in 2011). It was formerly freeware with limitations on commercial use, but since 2011 it is available under a free software/open source (3-clause BSD license) license as a part of the open source WebRTC project. It is suitable for VoIP applications, streaming audio, archival and messaging. The algorithm is a version of block-independent linear predictive coding, with the choice of data frame lengths of 20 and 30 milliseconds. The encoded blocks have to be encapsulated in a suitable protocol for transport, usually the Real-time Transport Protocol (RTP). iLBC handles lost frames through graceful speech quality degradation. Lost frames often occur in connection with lost or delayed IP packets. Ordinary low-bitrate codecs exploit dependencies between sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Global IP Solutions
Global IP Solutions (also known as GIPS) was a United States-based corporation that developed real-time voice and video processing software for Internet Protocol, IP networks, before it was acquired by Google in May 2010. The company delivered embedded software that enabled real-time communications capabilities for video and voice over IP (VoIP). GIPS was perhaps best known for developing the narrowband iLBC and wideband audio, wideband internet Speech Audio Codec, iSAC speech codecs. GIPS software was generally delivered as “engines” that packaged together voice and video processing components for smoother integration and better performance. GIPS’ customers are primarily service providers, application developers, and manufacturers of IP phones, gateways or voice and video conferencing systems. History The company (formerly known as Global IP Sound) was founded in July 1999 in Stockholm, Sweden by signal processing experts Roar Hagen (then GIPS’ CTO) and Bastiaan Kleijn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WebRTC
WebRTC (Web Real-Time Communication) is a free and open-source project providing web browsers and mobile applications with real-time communication (RTC) via application programming interfaces (APIs). It allows audio and video communication to work inside web pages by allowing direct peer-to-peer communication, eliminating the need to install plugins or download native apps. Supported by Apple, Google, Microsoft, Mozilla, and Opera, WebRTC specifications have been published by the World Wide Web Consortium (W3C) and the Internet Engineering Task Force (IETF). According to the webrtc.org website, the purpose of the project is to "enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols". History In May 2010, Google bought Global IP Solutions or GIPS, a VoIP and videoconferencing software company that had developed many components required for RTC, such as codec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cisco
Cisco Systems, Inc., commonly known as Cisco, is an American-based multinational digital communications technology conglomerate corporation headquartered in San Jose, California. Cisco develops, manufactures, and sells networking hardware, software, telecommunications equipment and other high-technology services and products. Cisco specializes in specific tech markets, such as the Internet of Things (IoT), domain security, videoconferencing, and energy management with leading products including Webex, OpenDNS, Jabber, Duo Security, and Jasper. Cisco is one of the largest technology companies in the world ranking 74 on the Fortune 100 with over $51 billion in revenue and nearly 80,000 employees. Cisco Systems was founded in December 1984 by Leonard Bosack and Sandy Lerner, two Stanford University computer scientists who had been instrumental in connecting computers at Stanford. They pioneered the concept of a local area network (LAN) being used to connect distant compute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polycom IP Phone
Poly, formerly Polycom, a part of HP Inc., is an American multinational corporation that develops video, voice and content collaboration and communication technology. Polycom was co-founded in 1990 by Brian L Hinman and Jeffrey Rodman. In 2018 Polycom was acquired by Plantronics and in 2019 the name of the combined entity was changed to Poly. In 2022, it was sold onwards to HP. History Polycom was co-founded in 1990 by Brian L Hinman and Jeffrey Rodman, who were colleagues at PictureTel Corp. The startup was based in San Francisco, California but soon moved to San Jose, California, with Hinman using $400,000 of his own money and $100,000 from friends as seed money. Oak Investment Partners and Accel Partners then contributed an additional $3 million in venture capital. Polycom's stated goal was to develop solutions for all the major ways people communicate, specifically including audio, content such as documents, and video. Its first products to market were audio conferencin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nokia N810
The Nokia N810 Internet tablet is an Internet appliance from Nokia, announced on 17 October 2007 at the Web 2.0 Summit in San Francisco. Despite Nokia's strong association with cellular products, the N810, like preceding tablets produced by Nokia, was not a phone, but instead allowed the user to browse the Internet and communicate using Wi-Fi networks or with a mobile phone via Bluetooth. It built on the hardware and software of the Nokia N800 with some features added and some removed. The Nokia N810 featured the Maemo Linux distribution operating system based on Maemo 4.0, which featured MicroB (a Mozilla-based mobile browser), a GPS navigation application, new media player, and a refreshed interface. Major changes from the N800 The Nokia N810 had much in common with the N800 and Internet Tablet OS 2008 operated on both, but there were some significant differences between the two. Here are the new features in the Nokia N810: * Sliding, backlit keyboard * Front-facing webca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nokia N800
The Nokia N800 Internet tablet is a wireless Internet appliance from Nokia, originally announced at the Las Vegas CES 2007 Summit in January 2007. N800 allows the user to browse the Internet and communicate using Wi-Fi networks or with mobile phone via Bluetooth. The N800 was developed as the successor to the Nokia 770. It includes FM and Internet radio, an RSS news reader, image viewer and a media player for audio and video files. Specifications * Processor: OMAP2420 microprocessor with a native speed of 400 MHz ** Runs at an underclocked 330 MHz on OS2007, because the DSP speed will be halved if run at full speed ** Runs at the native 400 MHz on OS2008. * Memory: 128 MiB of RAM and 256 MiB of flash memory. * Connectivity: IEEE 802.11 b/g, Bluetooth 2.0 (DUN, OPP, FTP, HFP, HID profiles as well as A2DP/AVRCP and PAN via third party emulation), and USB 2.0 OTG high-speed. * Display & resolution: pressure-sensitive resistive touch-screen LCD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maemo Recorder
Maemo is a software platform originally developed by Nokia, now developed by the community, for smartphones and Internet tablets. The platform comprises both the Maemo operating system and SDK. Maemo played a key role in Nokia's strategy to compete with Apple and Android, and that strategy failed for complex, institutional and strategic reasons. Maemo is mostly based on open-source code and has been developed by Maemo Devices within Nokia in collaboration with many open-source projects such as the Linux kernel, Debian, and GNOME. Maemo is based on Debian and draws much of its GUI, frameworks, and libraries from the GNOME project. It uses the Matchbox window manager and the GTK-based Hildon framework as its GUI and application framework. The user interface in Maemo 4 is similar to many hand-held interfaces and features a "home" screen, from which all applications and settings are accessed. The home screen is divided into areas for launching applications, a menu bar, and a l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ekiga
Ekiga (formerly called GnomeMeeting) is a VoIP and video conferencing application for GNOME and Microsoft Windows. It is 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. Ekiga was initially written by Damien Sandras in order to graduate from the University of Louvain (UCLouvain). It is currently developed by a community-based team led by Sandras. The logo was designed based on his concept by Andreas Kwiatkowski. Ekiga.net was also a free and private SIP registrar, which enabled its members to originate and terminate (receive) calls from and to each other directly over the Internet. The service was discontinued at the end of 2018. Features Feature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gizmo5
Gizmo5 (formerly known as Gizmo Project and SIPphone) was a voice over IP communications network and a proprietary freeware soft phone for that network. On November 12, 2009, Google announced that it had acquired Gizmo5. On March 4, 2011, Google announced that the service would be discontinued as of April 3, 2011. The Gizmo5 network used open standards for call management, Session Initiation Protocol (SIP) and Extensible Messaging and Presence Protocol (XMPP). However, the Gizmo5 client application was proprietary software and used several proprietary codecs, including GIPS and Internet Speech Audio Codec (iSAC). History Gizmo Project was founded by Michael Robertson and his company SIPphone. On November 12, 2009, Google announced that it had acquired Gizmo5 for a reported $30 million in cash. Prior to this acquisition, Gizmo5 had a working relationship with GrandCentral (now Google Voice) for years. Upon announcement, Gizmo5 suspended new signups until a Google relaunch. G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Real-time Transport Protocol
The Real-time Transport Protocol (RTP) is a network protocol for delivering audio and video over IP networks. RTP is used in communication and entertainment systems that involve streaming media, such as telephony, video teleconference applications including WebRTC, television services and web-based push-to-talk features. RTP typically runs over User Datagram Protocol (UDP). RTP is used in conjunction with the RTP Control Protocol (RTCP). While RTP carries the media streams (e.g., audio and video), RTCP is used to monitor transmission statistics and quality of service (QoS) and aids synchronization of multiple streams. RTP is one of the technical foundations of Voice over IP and in this context is often used in conjunction with a signaling protocol such as the Session Initiation Protocol (SIP) which establishes connections across the network. RTP was developed by the Audio-Video Transport Working Group of the Internet Engineering Task Force (IETF) and first published in 1996 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Frame
A frame is a digital data transmission unit in computer networking and telecommunication. In packet switched systems, a frame is a simple container for a single network packet. In other telecommunications systems, a frame is a repeating structure supporting time-division multiplexing. A frame typically includes frame synchronization features consisting of a sequence of bits or symbols that indicate to the receiver the beginning and end of the payload data within the stream of symbols or bits it receives. If a receiver is connected to the system during frame transmission, it ignores the data until it detects a new frame synchronization sequence. Packet switching In the OSI model of computer networking, a frame is the protocol data unit at the data link layer. Frames are the result of the final layer of encapsulation before the data is transmitted over the physical layer. A frame is "the unit of transmission in a link layer protocol, and consists of a link layer header followed by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
