Push-to-talk (PTT), also known as Press-to-Transmit, is a method of conversing on half-duplex communication lines, including two-way radio, using a momentary button to switch from voice reception mode to transmit mode. Push to Talk is an indie pop band from Oakland, California. ... Global System for Mobile communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world. ... Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ... This article does not cite any references or sources. ... The Global System for Mobile communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world. ... General Packet Radio Service (GPRS) is a Mobile Data Service available to users of Global System for Mobile Communications (GSM) and IS-136 mobile phones. ... High-Speed Circuit-Switched Data (HSCSD), is a development of Circuit Switched Data, the original data transmission mechanism of the GSM mobile phone system. ... 3G is the third generation of mobile phone standards and technology, after 2G. It is based on the International Telecommunication Union (ITU) family of standards under the International Mobile Telecommunications programme, IMT-2000. 3G technologies enable network operators to offer users a wider range of more advanced services while achieving... Enhanced Data rates for GSM Evolution (EDGE) or Enhanced GPRS (EGPRS), is a digital mobile phone technology that allows it to increase data transmission rate and improve data transmission reliability. ... W-CDMA (Wideband Code Division Multiple Access) is a type of 3G cellular network. ... Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ... FOMA, officially short for Freedom of Mobile Multimedia Access, is the brand name for the 3G services being offered by Japanese mobile phone operator NTT DoCoMo. ... UMTS-TDD is a mobile data network standard built upon the UMTS 3G cellular mobile phone standard, using a TD-CDMA, TD-SCDMA, or other 3GPP-approved, air interface that uses Time Division Duplexing to duplex spectrum between the up-link and down-link. ... UMTS-TDD is a mobile data network standard built upon the UMTS 3G cellular mobile phone standard, using a TD-CDMA, TD-SCDMA, or other 3GPP-approved, air interface that uses Time Division Duplexing to duplex spectrum between the up-link and down-link. ... TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) is a 3G mobile telecommunications standard, being pursued in the Peoples Republic of China by the Chinese Academy of Telecommunications Technology (CATT), Datang and Siemens AG, in an attempt to develop home-grown technology and not be dependent on Western... High-Speed Packet Access (HSPA) is a collection of mobile telephony protocols that extend and improve the performance of existing UMTS protocols. ... High-Speed Downlink Packet Access (HSDPA, also known as High-Speed Downlink Protocol Access) is a 3G (third generation) mobile telephony communications protocol in the High-Speed Packet Access (HSPA) family, which allows networks based on Universal Mobile Telecommunications System (UMTS) to have higher data transfer speeds and capacity. ... High-Speed Uplink Packet Access (HSUPA) is a 3G mobile telephony protocol in the HSPA family with up-link speeds up to 5. ... HSPA+ (or HSPA Evolution) is a 3G mobile telephony protocol defined in 3GPP release 7 (expected in 2007). ... This article is about the mobile phone standard. ... 3GPP LTE (Long Term Evolution) is the name given to a project within the Third Generation Partnership Project to improve the UMTS mobile phone standard to cope with future requirements. ... 3GPP LTE (Long Term Evolution) is the name given to a project within the Third Generation Partnership Project to improve the UMTS mobile phone standard to cope with future requirements. ... High Speed OFDM Packet Access (HSOPA) is a proposed part of 3GPPs Long Term Evolution (LTE) upgrade path for UMTS systems. ... Interim Standard 95 (IS-95), is the first CDMA-based digital cellular standard pioneered by Qualcomm. ... CDMA2000 is a hybrid 2. ... This article does not cite any references or sources. ... Interim Standard 95 (IS-95), is the first CDMA-based digital cellular standard pioneered by Qualcomm. ... 3G is the third generation of mobile phone standards and technology, after 2G. It is based on the International Telecommunication Union (ITU) family of standards under the International Mobile Telecommunications programme, IMT-2000. 3G technologies enable network operators to offer users a wider range of more advanced services while achieving... CDMA2000 is a hybrid 2. ... Evolution-Data Optimized or Evolution-Data only, abbreviated as EV-DO or EVDO and often EV, is one telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access. ... This article is about the mobile phone standard. ... Ultra Mobile Broadband is the brand name to describe the advanced technologies and services that will be supported by the CDMA2000 1xEV-DO Revision C (Rev. ... Mobile radio telephone systems preceded modern cellular mobile telephony technology. ... The Mobile Telephone System (MTS) was one of the earliest mobile telephone standards. ... The Improved Mobile Telephone Service (IMTS) is a pre-cellular VHF/UHF radio system that links to the PSTN. IMTS was the radiotelephone equivalent of land dial phone service. ... The Advanced Mobile Telephone System was a 0G method of radio communication, mainly used in Japanese portable radio systems. ... OLT (Norwegian for Offentlig Landmobil Telefoni, Public Land Mobile Telephony), was the first land mobile telephone network in Norway. ... MTD (Swedish abbreviation for Mobilelefonisystem D, or Mobile telephony system D) was a manual mobile phone system for the 450 MHz frequency band. ... Autotel (also called PALM, or Public Automated Land Mobile) is a radiotelephone service which was the missing link between earlier MTS/IMTS and later cellular telephone services. ... ARP (Autoradiopuhelin, Car Radio Phone in English) was the first commercially operated public mobile phone network in Finland. ... 1G (or 1-G) is short for first-generation wireless telephone technology, cellphones. ... For other meanings of the abbreviation, see: NMT. NMT (Nordisk MobilTelefoni or Nordiska MobilTelefoni-gruppen, Nordic Mobile Telephone in English) is a mobile phone system that was specified by the Nordic telecommunications administrations (PTTs) starting in 1970, and opened for service in 1981 as a response to the increasing congestion... Advanced Mobile Phone System (AMPS) is the analog mobile phone system standard developed by Bell Labs, and officially introduced in the Americas in 1983[1][2] It was the primary analog mobile phone system in North America (and other locales) through the 1980s and into the 2000s, and is still... hicap is a mobile techonology which has a consumer interface with a wide variety of industry references. ... Cellular Digital Packet Data (CDPD) uses unused bandwidth normally used by AMPS mobile phones between 800 and 900 MHz to transfer data. ... Cingular Interactive Truck at Ground Zero on 9/11/2001 Mobitex Network Design Mobitex is an OSI based open standard, national public access wireless data network first introduced in 1991 by carriers RAM Mobile Data and in Canada 1990 by Rogers Cantel. ... DataTac is a wireless data network technology originally developed by Motorola and deployed in the United States as the ARDIS network. ... This article does not cite any references or sources. ... Iden is also a village in East sussex, England iDEN Base Radio at a Cell Site Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, it is known to eat little children, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone. ... IS-54 and IS-136 are second-generation (2G) mobile phone systems, known as Digital AMPS (D-AMPS). ... Personal Digital Cellular (PDC) is a 2G mobile phone standard developed and used exclusively in Japan. ... Circuit Switched Data, often known as CSD, is the original form of data transmission developed for the GSM mobile phone system. ... The Personal Handy-phone System (PHS), also marketed as the Personal Access System (PAS), is a mobile network system operating in the 1880-1930 MHz frequency band. ... Wideband Integrated Dispatch Enhanced Network, or WiDEN, is a software upgrade developed by Motorola for its iDEN enhanced specialized mobile radio (or ESMR) wireless telephony protocol. ... 3G is the third generation of mobile phone standards and technology, after 2G. It is based on the International Telecommunication Union (ITU) family of standards under the International Mobile Telecommunications programme, IMT-2000. 3G technologies enable network operators to offer users a wider range of more advanced services while achieving... The Generic Access Network (GAN), also known as Unlicensed Mobile Access (UMA), is a telecommunication system allowing seamless roaming and handover between local area networks and wide area networks using a dual-mode mobile phone. ... This article is about the mobile phone standard. ... iBurst (or HC-SDMA, High Capacity Spatial Division Multiple Access) is a wireless broadband technology developed by ArrayComm. ... HIPERMAN stands for High Performance Radio Metropolitan Area Network and is a standard created by the European Telecommunications Standards Institute (ETSI) Broadband Radio Access Networks (BRAN) group to provide a wireless network communication in the 2 - 11 GHz bands across Europe and other countries which follow the ETSI standard. ... WiMAX, the Worldwide Interoperability for Microwave Access, is a telecommunications technology aimed at providing wireless data over long distances in a variety of ways, from point-to-point links to full mobile cellular type access. ... WiBro (Wireless Broadband, Korean: 와이브로) is a wireless broadband Internet technology being developed by the Korean telecoms industry. ... Cellular frequencies - the general term which unites radio frequencies utilized by cellular networks to provide service to their subscribers. ... The Specialized Mobile Radio system (SMR) is a conventional two-way radio system, or trunked radio system, operated by a service in the 800 or 900 Mhz bands. ... Cellular frequencies - the general term which unites radio frequencies utilized by cellular networks to provide service to their subscribers. ... Personal Communications Service or PCS is the name for the 1900-MHz radio band used for digital mobile phone services in Canada and the United States. ... This article or section does not cite its references or sources. ... Motorola HT1000 hand-held two-way radio A two-way radio is a radio that can both transmit and receive (a transceiver), unlike a broadcast receiver which only receives content one way. ...

Conventional two-way radios

For commercial, family and amateur two-way radios, PTT is a button that is pressed when needing to transmit with the radio on the tuned frequency or channel. While the PTT button remains unpressed (or unkeyed), any radio traffic that is received on the selected channel or frequency is heard through the radio's speaker. Unless the radio supports full-duplex operation, received audio is usually muted while the PTT button is pressed. Simultaneous full-duplex transmission and reception on a radio is generally not supported unless either the transmit and receive frequencies have significant separation between the two frequencies, or two different antennas are used with enough distance between them, or a cavity filter is used, due to an effect known as desensing which cancels out received transmissions. The Family Radio Service is an improved walkie talkie system authorized in the United States. ... Amateur radio station with modern solid-state transceiver featuring LCD display and DSP capabilities Amateur radio, often called ham radio, is a hobby that uses various types of radio broadcasting equipment to communicate with other radio amateurs for public service, recreation and self-training. ... This article or section does not cite its references or sources. ...

More recently, the PTT concept has been adopted by cellphone carriers as a way to instantaneously send transmissions to other users on the system, emulating walkie-talkie communications on a mobile phone network. A walkie-talkie is a portable, bi-directional radio transceiver, first developed for military use. ...

Current use in mobile telephony (PTT PoC)

PTT PoC or Push to Talk over Cellular is a feature similar to walkie-talkie that is provided over a cellular phone network. A Push to talk connection is typically connected virtually instantaneously. One significant advantage of PoC is allowing a single person to reach an active talk group at a button press, thus users no longer need to make several calls to coordinate with a group. A walkie-talkie is a portable, bi-directional radio transceiver, first developed for military use. ... Cellular redirects here. ...

Push-to-talk calls are half duplex communications — while one person speaks, the other(s) listen(s). Traditional mobile phone networks and devices utilize full-duplex communications, allowing customers to call other persons on a mobile or land-line network and be able to simultaneously talk and hear the other party. Such communications require a connection to be started by dialing a phone number and the other party answering the call, and the connection remains active until either party ends the call or the connection is dropped due to signal loss or a network outage. Such a system does not allow for casual transmissions to be sent to other parties on the network without first dialing them up, like is allowed on two-way radios. Full-duplex operation on mobile phone networks is made possible by using separate frequencies for transmission and reception.

Mobile Push-to-Talk service, offered by some mobile carriers, adds functionality for individual half-duplex transmissions to be sent to another party on the system without needing an existing connection to be already established. Since the system is half-duplex (utilizing a single frequency), only one user can transmit by PTT at a time; the other party is unable to transmit until the transmitting user unkeys their PTT button. Currently, PTT service is supported only between parties on the same mobile carrier service, and users with different carriers will be unable to transmit to each other by PTT. However, the advancement of this service will likely bring interconnectivity of PTT traffic between different networks in the near future.

In addition to mobile handsets, the Push-to-Talk service might be complemented with fixed PC applications acting as PTT clients connected to the mobile operator via secured Internet links. Some PC clients are designed for heavy load dispatching, that is, coordinating many issues typically caused when managing large fleets from a dispatch center. A personal computer (PC) is a computer whose price, size, and capabilities make it useful for individuals. ... In computing, a client is a system that accesses a (remote) service on another computer by some kind of network. ... Fleet vehicles are groups of automobiles with a single owner, typically a company or corporation, rather than an individual or family. ...

When used with GSM and CDMA networks, the PTT service commonly does not use up the regular airtime minutes that are available for general voice calls. Global System for Mobile communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world. ... General Information Generically (as a multiplexing scheme), code division multiple access (CDMA) is any use of any form of spread spectrum by multiple transmitters to send to the same receiver on the same frequency channel at the same time without harmful interference. ...

Nextel Communications introduced mobile push-to-talk in 1996 using iDEN. The "MOTO Talk" feature by Nextel (called Beep-beep or chirp by teenagers) includes both on- and off-iDEN network walkie-talkie service for newer Motorola phone models. The off-iDEN-network headset-to-headset Direct-Talk feature works for a radius of up to six miles. NEXTEL Communications (NASDAQ: NXTL) is a telecommunications firm based in the United States which provides a national mobile communications system. ... The title of this article is incorrect because of technical limitations. ... This article or section is not written in the formal tone expected of an encyclopedia article. ... A walkie-talkie is a portable, bi-directional radio transceiver, first developed for military use. ...

Sprint plans on implementing Qualcomm's QChat on their EV-DO Revision A network. QChat has connection times of less than a second, which brings it in line with Nextel's MOTO Talk connection speeds. This will in time replace their ReadyLink Push-to-Talk technology. Sprint Nextel Corporation (NYSE: S) is one of the largest telecommunications companies in the world. ... Qualcomm (NASDAQ: QCOM) is a wireless telecommunications research and development company based in San Diego, California. ... QChat QChat is a Push-to-Talk technology developed by Qualcomm. ... Evolution Data Only,Evolution Data Optimized, often abbreviated as EVDO, EV-DO, EvDO, 1xEV-DO or 1xEvDO is a wireless radio broadband data protocol being adopted by many CDMA mobile phone providers in Japan, Korea, the United States and Canada, as part of the CDMA2000 standard. ... ReadyLink is a walkie-talkie service, which utilizes Session Initiation Protocol (SIP), offered by the Sprint Nextel Corporation. ...

The Mobile Tornado, Motorola, Nokia, Ericsson, Siemens, Sonim, Wireless ZT, etc. versions of PTT are based on 2.5G or 3G packet-switched networks and use SIP and RTP protocols. These particular versions of PTT are called Push to Talk over Cellular]], which is abbreviated PoC. To meet Wikipedias quality standards, this article or section may require cleanup. ... Motorola Inc. ... This article is about the telecommunications corporation. ... Ericsson () NASDAQ: ERIC. Founded in 1876, Ericsson is a leading provider of communications networks, related services and handset technology platforms. ... Siemens AG (ISIN: DE0007236101, FWB: SIE, NYSE: SI) is one of the worlds largest companies and Europes largest engineering firm. ... Sonim (Born in Shikoku, Japan, March 10, 1983) is a Zainichi Korean J-pop singer. ... 2. ... 3G is the third generation of mobile phone standards and technology, after 2G. It is based on the International Telecommunication Union (ITU) family of standards under the International Mobile Telecommunications programme, IMT-2000. 3G technologies enable network operators to offer users a wider range of more advanced services while achieving... In computer networking and telecommunications, packet switching is a communications paradigm in which packets (messages or fragments of messages) are individually routed between nodes, with no previously established communication path. ... The Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol for creating, modifying, and terminating sessions with one or more participants. ... The Real-time Transport Protocol (or RTP) defines a standardized packet format for delivering audio and video over the Internet. ...

The Open Mobile Alliance is defining PoC as part of the IP Multimedia Subsystem, and a first version of OMA PoC standard was finalized in first half of 2005. Full fledged commercial deployments of OMA PoC are few and in between. It is very unclear whether OMA PoC will be seriously launched in the European market. The Open Mobile Alliance (OMA) is a standards body which develops open standards for the mobile industry. ... The IP Multimedia Subsystem (IMS) is an architectural framework for delivering internet protocol (IP) multimedia to mobile users. ...

A pre-standard version of PoC is also defined by the industry consortium made up of Motorola, Nokia, Ericsson, Siemens AG and AT&T Mobility with the aim of creating a commercial offering enabling interoperability between vendors. Motorola Inc. ... This article is about the telecommunications corporation. ... Ericsson () NASDAQ: ERIC. Founded in 1876, Ericsson is a leading provider of communications networks, related services and handset technology platforms. ... Siemens AG (ISIN: DE0007236101, FWB: SIE, NYSE: SI) is one of the worlds largest companies and Europes largest engineering firm. ... This article is about the wireless subsidiary of AT&T. For the defunct wireless provider that was merged into Cingular in 2004, see AT&T Wireless Services. ...

Operators using PoC

Several operators are using Pre-Standard Push To Talk Server in GSM / GPRS / EDGE / CDMA / UMTS networks. Most operators, if not all, offer this service as a separate charge that do not use normal voice minutes. A mobile network operator, also known as wireless service provider, wireless carrier, mobile phone operator, or cellular company, is a telephone company that provides services for mobile phone subscribers. ... Global System for Mobile communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world. ... General Packet Radio Service (GPRS) is a mobile data service available to users of GSM mobile phones. ... Enhanced Data rates for GSM Evolution (EDGE) or Enhanced GPRS (EGPRS), is a digital mobile phone technology that allows it to increase data transmission rate and improve data transmission reliability. ... General Information Generically (as a multiplexing scheme), code division multiple access (CDMA) is any use of any form of spread spectrum by multiple transmitters to send to the same receiver on the same frequency channel at the same time without harmful interference. ... Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ...

Terminal vendors has several variations of software installed on mobile terminals, so there is no 100% compatibility list available.

In Germany, Talk-IP Ltd. offered Mobile Tornado's PTT solution as managed service for enterprises.

In Japan, NTT DoCoMo implemented Push-to-Talk in late 2005 with the introduction of new FOMA 902i series handsets. It's billed at 5 yen per push, and has an "unlimited" option for 1000 yen/month. NTT DoCoMo, Inc. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... The word Foma has several meanings: Foma is a term in the fictional Bokononist religion in Kurt Vonneguts novel Cats Cradle. ... Japanese 10 yen coin (obverse) showing Phoenix Hall of Byodoin Yen is the currency used in Japan. ...

Currently, Verizon Wireless offers PTT service using the Motorola PTT solution, AT&T Mobility, Alltel using the Kodiak RTX (Real Time Exchange) system to deliver PTT speeds comparable to Nextel and SouthernLinc. Verizon Wireless (legally named Cellco Partnership) is the largest American wireless company and largest wireless data provider, based on revenues. ... This article is about the wireless subsidiary of AT&T. For the defunct wireless provider that was merged into Cingular in 2004, see AT&T Wireless Services. ... Alltel (NYSE: AT) is an American telecommunications company with headquarters in Little Rock, Arkansas. ...

In Canada, the service is provided by several carriers including TELUS Mobility (Mike), Bell Mobility and Aliant Mobility (Bell 10-4). Both Bell and Aliant offer the service which allows customers to use the service in the United States without roaming charges. The service allows a caller to simultaneously communicate with multiple users at different locations. By doing so, this eliminates multiple airtime charges associated with three-way calling. With the cellular number portability coming into effect by March 2007, the PTT (Push-to-Talk) service is expected to increase greatly with the removal of Roamer Access Numbers by August 2006. Roamer Access Numbers had given the freedom for customers to not incur incoming long distance charges by answering calls outside their local calling area if the caller first dials the Roamer Access Number.^{[citation needed]} TELUS (TSX: T) (NYSE: TU) is a phone company in Canada. ... Bell Mobility is the division of Bell Canada which sells wireless services in Canada. ... Aliant Inc. ... ReadyLink is a walkie-talkie service, which utilizes Session Initiation Protocol (SIP), offered by the Sprint Nextel Corporation. ... Aliant Inc. ...

In Slovakia, Ardaco developed SecurePTT solution for information and communication security area.

Service providers by region

• Argentina - Nii Holdings
• Australia
  • Telstra
• Brazil - Claro, Nii Holdings
• Canada
  • Aliant, Bell Mobility, NorthernTel, SaskTel Mobility (known as 10-4 service - compatible with Sprint PCS ReadyLink^[1])
  • Telus Mobility (known as MIKE)
• Chile - Nii Holdings
• Cyprus - Areeba
• Europe - Orange
• Egypt - Vodafone (Also available in Portugal)
• Finland - Saunalahti
• Germany - Talk-IP
• Hungary - T-Mobile Hungary
• India - Hutch, AirTel, Idea, Tata Indicom
• Israel - MiRS , Orange , cellcom , pelephone
• Italy - TIM
• Jordan - XPress
• Malaysia - Maxis Communication
• Maldives - Wataniya Maldives
• Mexico - Nii Holdings
• New Zealand
  • Boost Mobile
  • Telecom New Zealand
• Paraguay
  • Personal
• Pakistan
  • Warid Telecom
• Peru
  • Claro - Claro Directo
• Poland
  • Plus GSM - business customers only
• Portugal
  • Optimus
  • Vodafone (Also available in Egypt)
• Peru - Nii Holdings
• Saudi Arabia - Bravo
• Slovakia - Silentel SecurePTT, Ardaco
• Sri Lanka - Dialog GSM
• Thailand - Advanced Info Service (AIS)
• Turkey
  • Avea
  • Turkcell
• United Arab Emirates - Etisalat
• United States
  • Alltel
  • AT&T Mobility
  • Sprint
  • SouthernLINC Wireless
  • Verizon Wireless
• Ukraine
  • life:)
  • Kyivstar GSM
• Uruguay
  • Ancel
  • Movistar
  • CTI Movil

NII Holdings Inc. ... Telstra Corporation (ASX: TLS, NZX: TLS, NYSE: TLS) (formed from Telecom Australia) is an Australian telecommunications and media company under private ownership, with a dominant position in landline telephone services, a large share of mobile phone services, domestic consumer (including dial-up access and Broadband internet broadband cable modem, satellite... Claro is a mobile phone network in Brazil, Peru, Chile, Honduras, El Salvador, Nicaragua, Guatemala, Puerto Rico and the Dominican Republic. ... NII Holdings Inc. ... Aliant Inc. ... Bell Mobility is the division of Bell Canada which sells wireless services in Canada. ... NorthernTel (formerly Northern Telephone) is a telephone company in Ontario, Canada. ... Saskatchewan Telecommunications (SaskTel) is a provincial Crown Corporation operating under the authority of The Saskatchewan Telecommunications Act. ... This article is about the telecommunications company; see sprints for the running term. ... ReadyLink is a walkie-talkie service, which utilizes Session Initiation Protocol (SIP), offered by the Sprint Nextel Corporation. ... TELUS (TSX: T, NYSE: TU) is a Canadian telecommunications firm, the countrys second-largest telecommunications carrier after Bell Canada, with C$8. ... Mike is a Canadian cellular network utilizing Motorolas proprietary iDEN technology. ... NII Holdings Inc. ... For other uses, see Europe (disambiguation). ... See also Orange (disambiguation) for other meanings of the word. ... Vodafone Group Plc is a mobile network operator headquartered in Newbury, Berkshire, England, UK. It is the largest mobile telecommunications network company in the world by turnover and has a market value of about £84. ... Saunalahti is a Finnish mobile phone operator and an internet service provider. ... Hutchs current Logo Hutch is a national cellular operator in India, covers most of the country. ... MiRS is a wireless telecommunications company based in Israel. ... See also Orange (disambiguation) for other meanings of the word. ... Cellcom (Hebrew: סלקום) is a major Israeli telecommunications company. ... Pelephone (Hebrew: פלאפון pronounced: /pelefon/) is an Israeli-based telecommunications company, founded in 1986 as a joint venture between Motorola and Tadiran though today it is fully owned by Bezeq. ... TIM (Telecom Italia Mobile) is Telecom Italias mobile phone subsidiary, and runs a GSM network in Italy (with a nearly 99% coverage), as well as in Greece, Turkey, Peru, Brazil and Bolivia In Europe, TIM is part of the FreeMove alliance. ... Wataniya Telecom Maldives (also referred to as Wataniya Maldives), a sister company of Wataniya Telecom International, is the second mobile operator in the Maldives. ... NII Holdings Inc. ... Boost Mobile is an Irvine, CA brand of mobile phone launched in Australia (Over Optus) in 2000 and in New Zealand (Over Telecom New Zealand) in 2001. ... Telecom New Zealand NZX: TEL ASX: TEL NYSE: NZT is a Wellington-based telephone company run as a publicly-traded private company since 1990. ... Personal is a national GSM cellular operator in Paraguay. ... Warid Telecom International is an Abu Dhabi based mobile telecommunication firm providing telephony services in Bangladesh and Pakistan. ... The Claro toolkit is a set of cross-platform libraries which aims to allow programmers to write applications for almost any operating system without needing to modify the code for each new platform. ... Logo Plus GSM is the brand name of Polands mobile phone network operator, Polkomtel. ... Optimus, proprietary RadioShack brand of electronic products Optimus keyboard, an OLED computer keyboard Optimus mini three, a mini OLED computer keyboard Optimus of Sweden, a manufacturer of liquid fuel stoves Juppiter Optimus Maximus, or Jupiter, a deity in Roman mythology Optimus Prime, a Transformer, leader of the Autobots Optimus Primal... Vodafone Group Plc is a mobile network operator headquartered in Newbury, Berkshire, England, UK. It is the largest mobile telecommunications network company in the world by turnover and has a market value of about £84. ... NII Holdings Inc. ... Bravo Telecom is Saudi Arabia and the GCC’s first and only specialized wireless operator offering specialized communications solutions. ... This article does not cite any references or sources. ... Advanced Info Service PCL is Thailands largest GSM mobile phone operator with 17. ... Avea is the only GSM 1800 operator in Turkey. ... // Turkcell (NYSE: TKC) is a mobile phone operator in Turkey, currently the countrys largest. ... Etisalat logo Emirates Telecommunications Corporation, also known as Etisalat (former Emirtel), is the incumbent telecommunications carrier and internet service provider in the United Arab Emirates. ... Alltel (NYSE: AT) is an American telecommunications company with headquarters in Little Rock, Arkansas. ... This article is about the wireless subsidiary of AT&T. For the defunct wireless provider that was merged into Cingular in 2004, see AT&T Wireless Services. ... Sprint Nextel Corporation (NYSE: S) is one of the largest telecommunications companies in the world. ... SouthernLINC Wireless is a mobile phone service provider serving Mississippi, Alabama, Georgia, and Florida. ... Verizon Wireless (legally named Cellco Partnership) is the largest American wireless company and largest wireless data provider, based on revenues. ... ANTEL (Administración Nacional de Telecomunicaciones) is Uruguays goverment-owned telecommunications company. ... movistar is a major mobile phone operator owned by Telefónica Móviles. ... CTI Móvil is a mobile phone company in Argentina, Uruguay and Paraguay (where it was formerly known as Port Hable), owned by América Móvil. ...

See also

• IP Multimedia Subsystem
• IMPS

The IP Multimedia Subsystem (IMS) is an architectural framework for delivering internet protocol (IP) multimedia to mobile users. ... For Star Wars fan film, see IMPS The Relentless. ...

Manufacturers of PTT mobile phones

• Motorola
• Nokia
• Sanyo
• SAGEM
• Sonim Technologies
• BlackBerry
• Kyocera
• HTC

Motorola Inc. ... This article is about the telecommunications corporation. ... Sanyo Electric Co. ... SAGEM (Société d’Applications Générales de l’Electricité et de la Mécanique) was a major French company involved in defence electronics, consumer electronics and communication systems. ... The BlackBerry is a wireless handheld device introduced in 1999 which supports push e-mail, mobile telephone, text messaging, internet faxing, web browsing and other wireless information services. ... Kyocera Corporation ) (TYO: 6971 , NYSE: KYO) is a Japanese company based in Kyoto, Japan. ... HTC is a three letter abbreviation for the following: High Tech Computer Corporation - Taiwan-based manufacturer of Windows-powered handheld devices. ...

Manufacturers of PTT fixed PC clients

• Genaker PTT over Cellular dispatcher and PC Clients (Nokia 1.5 and OMA 1.0 compatible]

Manufacturers of PTT fixed Handheld clients

• Dingotel enables Push to Talk from radios to tunnel over the internet.
• HipVoice PTT over VoWiFi PocketPC, Windows CE, Windows Mobile, CE Mobile

Manufacturers of PTT infrastructure

• Kodiak Networks (16+ live installations)
• Motorola (iDEN)
• Clarity Communication Systems (inTouch)
• Motorola (50+ live installations)
• fg microtec OMA and IMS clients
• MobileTornado (aprx 11 live installations)
• Nokia Siemens Networks (36 live installations)
• WirelessZT (15 Countries / Installations)
• Celtius
• SONIM
• Qualcomm QChat (1 Live install in the works}

Motorola Inc. ... Nokia Siemens Networks (NSN) is a telecommunications solutions supplier which was created as the result of a merger (by means of a 50-50 joint venture) between Siemens AGs COM division (minus its Enterprise business unit) and Nokias Network Business Group. ... Qualcomm (NASDAQ: QCOM) is a wireless telecommunications research and development company based in San Diego, California. ...

References

1. ^