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Encyclopedia > Media gateway

A Media Gateway acts as a translation unit between disparate telecommunications networks such as PSTN; Next Generation Networks; 2G, 2.5G and 3G radio access networks or PBX. Media Gateways enable multimedia communications across Next Generation Networks over multiple transport protocols such as ATM and IP. The public switched telephone network (PSTN) is the concatenation of the worlds public circuit-switched telephone networks, in much the same way that the Internet is the concatenation of the worlds public IP-based packet-switched networks. ... Next Generation Networking (NGN), also referred to as Next Generation Network Architecture (NGNA), is a broad term for a certain kind of emerging computer network architectures and technologies. ... This article or section does not cite its references or sources. ... 2. ... 3G is short for third-generation technology in the context of mobile phone standards. ... PBX redirects here. ... This article does not cite its references or sources. ... Next Generation Networking (NGN), also referred to as Next Generation Network Architecture (NGNA), is a broad term for a certain kind of emerging computer network architectures and technologies. ... Asynchronous Transfer Mode (ATM) is a cell relay, network and data link layer protocol which encodes data traffic into small (53 bytes; 48 bytes of data and 5 bytes of header information) fixed-sized cells. ... The Internet Protocol (IP) is a data-oriented protocol used for communicating data across a packet-switched internetwork. ...


Because the MG connects different types of networks, one of its main functions is to convert between the different transmission and coding techniques. Media streaming functions such as echo cancellation, DTMF, and tone sender are also located in the MG.


Media Gateways are controlled by a Media Gateway Controller which provides the call control and signaling functionality. Communication between Media Gateways and Call Agents is achieved by means of protocols such as MGCP or Megaco or H.248 or SIP. A Media Gateway Controller (MGC) is a system used in certain Voice over IP telephony architectures. ... In computing, Media Gateway Control Protocol (MGCP) is a protocol used within a Voice over IP system. ... Megaco (a contraction of Media Gateway Controller) is a signalling protocol, used between a Media Gateway and a Media Gateway Controller (also known as a Call Agent or a Soft Switch) in a VoIP network. ... The three letter abbreviation SIP can refer to the following: Soft Input Panel, the main input method on Pocket PC Session Initiation Protocol, an IETF standard, one of the leading signaling protocols for Voice over IP (VoIP), along with H.323 Server Interface Pod, a Dell proprietary hardware unit that...


VoIP Media Gateways perform the conversion between TDM voice to Voice over Internet Protocol (VoIP). IP Telephony, also called Internet telephony, is the technology that makes it possible to have a telephone conversation over the Internet or a dedicated Internet Protocol (IP) network instead of dedicated voice transmission lines. ... Time-division multiplexing (TDM) is a type of digital or (rarely) analog multiplexing in which two or more signals or bit streams are transferred apparently simultaneously as sub-channels in one communication channel, but physically are taking turns on the channel. ... The Internet Protocol (IP) is a data-oriented protocol used for communicating data across a packet-switched internetwork. ...


Mobile access Media Gateways connect the radio access networks of a public land mobile network PLMN to a Next Generation Core Network. 3GPP standards define the functionality of CS-MGW and IMS-MGW for UTRAN and GERAN based PLMNs. In telecommunication, a public land mobile network (PLMN) is a network that is established and operated by an administration or by a recognized operating agency (ROA) for the specific purpose of providing land mobile telecommunications services to the public. ... This article or section does not adequately cite its references or sources. ... UTRAN, short for UMTS Terrestrial Radio Access Network, is a collective term for the Node-Bs and Radio Network Controllers which make up the UMTS radio access network. ... The introduction of this article does not provide enough context for readers unfamiliar with the subject to understand later content. ... In telecommunication, a public land mobile network (PLMN) is a network that is established and operated by an administration or by a recognized operating agency (ROA) for the specific purpose of providing land mobile telecommunications services to the public. ...


There is one very special Multimode Media Gateway that enables the Connectivity with Skype/SIP/H.323/TDM/ISDN. The only Vender in the world is Spin Interactive Technology Co., Ltd.. Skype (IPA pronunciation: , rhymes with type) is a peer-to-peer Internet telephony network founded by the entrepreneurs Niklas Zennström and Janus Friis, also founders of the file sharing application Kazaa. ... The three letter abbreviation SIP can refer to the following: Soft Input Panel, the main input method on Pocket PC Session Initiation Protocol, an IETF standard, one of the leading signaling protocols for Voice over IP (VoIP), along with H.323 Server Interface Pod, a Dell proprietary hardware unit that... H.323 is an umbrella recommendation from the ITU-T, that defines the protocols to provide audio-visual communication sessions on any packet network. ... TDM is a three-letter acronym that may refer to: Pro Tools TDM, an audio effects plug-in architecture based on Time Division Multiplexing and created by Digidesign for their popular Pro Tools Digital Audio Workstation Time-division multiplexing, a method for sending multiple digital signals along a single telecommunications... ISDN is also short for isosorbide dinitrate Integrated Services Digital Network (ISDN) is a type of circuit switched telephone network system, designed to allow digital (as opposed to analog) transmission of voice and data over ordinary telephone copper wires, resulting in better quality and higher speeds, than available with analog...


Market Analysis

While Cisco Systems has emerged as the leader for VoIP network equipment, according to the latest In-Stat report, Chinese-based Huawei is the current market leader for media gateway port shipments for 2005. Discounting Huawei's intra-national domestic shipments, Nortel Networks holds the number one marketshare for both media gateways and class 4 softswitch licenses. With a projcted increase of over 300% in the next 5 years and a total world market of over $8.7 Billion, demand for Media Gateways signal the accelerating transition from PSTN (Public Switched Telephone Network) to VoIP. A Cisco ASM/2-32EM router deployed at CERN in 1987. ... Logo Huawei Huawei Technologies Co. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... It has been suggested that Office classification be merged into this article or section. ... IP Telephony, also called Internet telephony, is the technology that makes it possible to have a telephone conversation over the Internet or a dedicated Internet Protocol (IP) network instead of dedicated voice transmission lines. ...


References

  • In-Stat Reports Rise in Media Gateway Market for 2010
  • Carrier VoIP/IMS market down 7% in 1Q06, up 48% since 1Q05
  • Cable Companies Scramble for their piece of Increasing VoIP Market

See also


Overviews on manufacturers' websites: A Signaling Gateway is a network component solely responsible for translating signaling messages (i. ...


Novatec Kommunikationstechnik GmbH, Germany


  Results from FactBites:
 
RFC 2705 (rfc2705) - Media Gateway Control Protocol (MGCP) Version 1.0 (16342 words)
Media gateways that support such channels are capable of translating the digital signals received on the channel, which may be encoded according to A or mu-law, using either the complete set of 8 bits or only 7 of these bits, into audio packets.
Media gateways that support these signalling functions shall be able to send and receive the signalling packets to and from a call agent, using the "back haul" procedures defined by the SIGTRAN working group of the IETF.
Media gateways that support these signalling functions shall be able to detect and produce the corresponding signals, such as for example "wink" or "A", according to the event signalling and reporting procedures defined in MGCP.
Media gateway - Wikipedia, the free encyclopedia (168 words)
Media Gateways enable multimedia communications across Next Generation Networks over multiple transport protocols such as ATM and IP.
Media Gateways are controlled by a Media Gateway Controller (also known as a Call Agent or a Soft Switch) which provides the call control and signaling functionality.
Communication between Media Gateways and Call Agents is achieved by means of protocols such as MGCP or Megaco.
  More results at FactBites »

 
 

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