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Ericsson T39
Ericsson T39 was a GSM mobile phone released by Ericsson Mobile Communications in 2001, it was the follow-up to the T28 and T29. The prototype, which was unveiled in 2000, was the second phone with built-in Bluetooth, while the first was ''Ericsson R520M''. Specifications * GSM Tri-band (900/1800/1900) * Form Factor: Flip * Weight: 86 g * Screen: 101 × 54 px Monochrome LCD * Bluetooth (1.0b) * IrDA * SMS, E-mail, WAP 1.2.1, GPRS, HSCSD In communications, Circuit Switched Data (CSD) is the original form of data transmission developed for the time-division multiple access (TDMA)-based mobile phone systems like Global System for Mobile Communications (GSM). After 2010 many teleco ... The T39 came in three different colour options; Classic Blue which was a dark blue, Icecap Blue which was a light blue, and Rose White which was a cream colour. The T39 was the last phone from Ericsson with an active flip and external antenna. References External links Ericsson T39 full spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ericsson Mobile Communications
Ericsson Mobile Communications AB was a subsidiary of Ericsson, entirely focused on development of mobile phones (handsets). The major offices were located in Lund, Kumla, Raleigh, North Carolina and Lynchburg, Virginia. History Under the command of Ericsson Radio Systems present CEO Lars Ramqvist, a new joint venture company was formed together with General Electric July 1, 1989, under the name Ericsson GE Mobile Communications. The company consisted of all mobile phone activity of both companies in Sweden and USA. Ericsson owned 60% of the company, and General Electric owned 40%. In this fusion GE contributed, among other things, a factory of some 1,600 employees in Lynchburg, Virginia. Ericsson Radio Systems former CEO Åke Lundqvist moved to the US as CEO for the new company, which also controlled the mobile handset activities in Kumla and the research facility in Lund. Mobile telephony, at this time, constituted 14% of the billing in the business unit for radio communication ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bluetooth
Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to . It employs UHF radio waves in the ISM bands, from 2.402GHz to 2.48GHz. It is mainly used as an alternative to wire connections, to exchange files between nearby portable devices and connect cell phones and music players with wireless headphones. Bluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more than 35,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics. The IEEE standardized Bluetooth as IEEE 802.15.1, but no longer maintains the standard. The Bluetooth SIG oversees development of the specification, manages the qualification program, and protects the trademarks. A manufacturer must meet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IrDA
The Infrared Data Association (IrDA) is an industry-driven interest group that was founded in 1994 by around 50 companies. IrDA provides specifications for a complete set of protocols for wireless infrared communications, and the name "IrDA" also refers to that set of protocols. The main reason for using the IrDA protocols had been wireless data transfer over the "last one meter" using point-and-shoot principles. Thus, it has been implemented in portable devices such as mobile telephones, laptops, cameras, printers, and medical devices. The main characteristics of this kind of wireless optical communication are physically secure data transfer, line-of-sight (LOS) and very low bit error rate (BER) that makes it very efficient. Specifications IrPHY The mandatory IrPHY (Infrared Physical Layer Specification) is the physical layer of the IrDA specifications. It comprises optical link definitions, modulation, coding, cyclic redundancy check (CRC) and the framer. Different data ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HSCSD
In communications, Circuit Switched Data (CSD) is the original form of data transmission developed for the time-division multiple access (TDMA)-based mobile phone systems like Global System for Mobile Communications (GSM). After 2010 many telecommunication carriers dropped support for CSD, and CSD has been superseded by GPRS and EDGE (E-GPRS). Technical CSD uses a single radio time slot to deliver 9.6 kbit/s data transmission to the GSM network switching subsystem where it could be connected through the equivalent of a normal modem to the Public Switched Telephone Network (PSTN), allowing direct calls to any dial-up service. For backwards compatibility, the IS-95 standard also supports CDMA Circuit Switched Data. However, unlike TDMA, there are no time slots, and all CDMA radios can be active all the time to deliver up to 14.4 kbit/s data transmission speeds. With the evolution of CDMA to CDMA2000 and 1xRTT, the use of IS-95 CDMA Circuit Switched Data declined in favour of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sony Ericsson Mobile Phones
Sony Mobile Communications Inc. ( ja, ソニーモバイルコミュニケーションズ株式会社) was a multinational telecommunications company founded on October 1, 2001, as a joint venture between Sony Group Corporation and Ericsson. It was originally incorporated as Sony Ericsson Mobile Communications, and headquartered in London, England, until Sony acquired Ericsson's share in the venture on February 16, 2012. On April 1, 2021, Sony integrated its electronics businesses including Sony Mobile into one company called Sony Corporation. Prior to April 1, 2021, Sony Mobile exclusively created Android-powered smartphones under the Xperia sub-brand name; it also developed tablet computers (Sony Tablet), smartwatches ( Sony SmartWatch) and fitness trackers (Sony SmartBand), alongside accessories and software for the devices. Sony Mobile had research and development facilities in Lund, Sweden; Beijing, China; Tokyo, Japan; and San Francisco, United States. At its peak in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ericsson
(lit. "Telephone Stock Company of LM Ericsson"), commonly known as Ericsson, is a Swedish multinational networking and telecommunications company headquartered in Stockholm. The company sells infrastructure, software, and services in information and communications technology for telecommunications service providers and enterprises, including, among others, 3G, 4G, and 5G equipment, and Internet Protocol (IP) and optical transport systems. The company employs around 100,000 people and operates in more than 180 countries. Ericsson has over 57,000 granted patents. Ericsson has been a major contributor to the development of the telecommunications industry and is one of the leaders in 5G. The company was founded in 1876 by Lars Magnus Ericsson and is jointly controlled by the Wallenberg family through its holding company Investor AB, and the universal bank Handelsbanken through its investment company Industrivärden. The Wallenbergs and the Handelsbanken sphere acquired their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
