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Telcos to blacklist errant dealers
2008-02-26 07:34:00
NEW DELHI: Getting a new mobile phone connection is not going to be the same again. The apex advisory council for telecom in India (ACT) has decided to form a common code of conduct for verification of mobile connections. The new code would be applicable across the country. If any dealer or retailer is found violating the norms, the entire industry would blacklist the retailer or dealer.ACT, a joint council of the cellular operators association of India (COAI) and the association of unified telecom services providers of India (AUSPI), has asked the department of telecommunication (DoT) not to impose any penalty on the industry for at least six months as the new guidelines would automatically bring down the rate of non-compliance.ACT would also hand over the name of the black-listed dealers to the DoT and the concerned security agencies.Earlier, DoT has proposed a penalty on the service provider in case of violation of the norms related to subscriber verification. The department has ...
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Ixilix Announces Support for Low-Cost Virtualized Disaster Recovery Over IP
2008-02-26 07:32:00
PHILADELPHIA, Ixilix announced today that its SAS 70 Type II data center now offers disaster recovery using virtualized servers and data replication over IP networks. "Many companies do not use a disaster recovery site because it is too expensive to buy a second set of hardware for the DR site, hardware that will naturally sit idle most of the time," said Robert Boyer, Senior Vice President at Ixilix. "Using virtualization greatly reduces hardware costs, and using data replication over IP means simple system management and minimal impact on production systems," Boyer added.Using server virtualization means that businesses can adhere to the disaster recovery best practice of one-to-one correspondence in systems for failover, but with much less capital expense. Data Replication over IP networks means that the disaster recovery site can feasibly be almost anywhere in relation to the primary site. Synchronous data replication, usually to storage area networks (SAN), generally has a limi...
More About: Recovery , Philadelphia , Disaster , Cost , Support

Toshiba Introduces High-Performance
2008-02-26 07:29:00
Toshiba Introduces High -Performance 5,400 RPM 1.8-Inch HDDs With Micro-SATA ConnectorNew 1.8-inch Products Feature High Capacity at 120GB and 80GB and Enhanced Performance for Ultra-Portable PC Solutions.IRVINE, Calif., Feb. 25 /PRNewswire/ -- Toshiba Storage Device Division (SDD), the industry pioneer in small form factor hard disk drives (HDDs), today added a line of high-performance 5,400 RPM Serial ATA (SATA) 1.8-inch HDDs to its product offerings for mobile PCs. Available in 120GB(1) and 80GB capacities, these new HDDs integrate design elements from Toshiba's flagship 2.5-inch line into its proven 1.8-inch platform to offer enhanced performance for ultra-thin and light PC applications.(Logo: http://www.newscom.com/cgi-bin/prnh/20080 225/AQM158LOGO)These new 1.8-inch HDDs leverage the interface architecture from Toshiba's 2.5-inch SATA HDDs, which carry the industry certification for SATA compliance, providing seamless compatibility across Toshiba's full line of SATA HDDs. The...
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USB battery-charger designs meet new industry standards
2008-02-25 10:50:00
USB is not just for data transfer any more; there are too many good reasons to use it in such applications as charging handheld-device batteries. New standards address such uses, and new connectors and ICs can make short work of your designs.New USB-charging standardsThe new Chinese standard introduces a variety of electrical and mechanical requirements that ensure battery-charging intercompatibility and safety. The standard requires new wall chargers to provide a connector that complies with the USB Type A specification (Figure 1). This mechanical implementation allows connection of mobile phones to any dedicated wall charger or computing USB port for battery charging. The new wall chargers must be able to supply at least 300 mA but not more than 1.8A. This current range addresses both the low-cost and the high-performance product segments. The Chinese-government mandate also refers to a wall-charger-detection scheme, which requires detecting a short circuit between the D+ and D? t...
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Bush Again Demands Telecom Immunity
2008-02-25 10:47:00
President George W. Bush again called for retroactive legal immunity from class action lawsuits initiated against telecommunication companies that participated in the government's wiretapping program without court-ordered warrants. It follows many other recent statements by the Bush Administration and its supporters in Congress who are trying to push through a legislative measure that removes a citizen's right to sue, as part of the law overseeing the government's surveillance of citizens and foreigners.Critics have called Mr. Bush's tone and choice of words "fear-mongering," if not merely wrong, when he characterizes the importance of retroactive immunity for past lawbreaking in being able to protect America from future terrorist threats. The immunity provision currently being fought over (and which will be back in the spotlight when House members return this week) is part of the update to the Foreign Intelligence Surveillance Act (or FISA), a law first enacted in 1978 which se...
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Advice 'essential' to buy-to-let market
2008-02-22 05:23:00
Today I would like to direct you to compare research result. I think that new research by alliance & Leicester will give you some inspiration how to wise in investment in short and long term investment. I got this information on www.eart.co.uk New research by Alliance & Leicester has found that brokers expect landlords to consult them for advice on buy-to-let mortgages.Brokers predict that landlords will turn to them for qualified advice (59 per cent), followed by exclusive buy-to-let deals (20 per cent) and then for good rates (11 per cent).Additionally, more than a third of landlords should be able to make a profit in 2008, according to brokers. Commenting on the data, Mark Blackwell, director of intermediary sales at Alliance & Leicester, said: "Investing in buy-to-let properties should be seen as a long-term investment. Despite this, brokers expect nearly 80 per cent of landlords to make a positive return on their investment this year."The study also found that some ...
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Commerce approves AT&T franchise contract
2008-02-21 07:53:00
The Commerce Township Board of Trustees has granted approval to a franchise agreement submitted by AT&T to bring telephone, Internet, and video services to the community sometime in the future. Board approval of the agreement was unanimous during a Tuesday, Feb. 12 meeting. Trustee Daniel Munro was absent from the meeting.AT&T has been approaching communities throughout Michigan on the heels of the state Legislature's passage of a new law which allows the company to come into communities and compete with the incumbent service providers. Services are available in several of the communities with AT&T's rollout which occurred last year."Well, officially we have some more competition in the township now," Supervisor Tom Zoner said. "We were one of the last in the area to get a (proposal), but I think they maybe held off until they had enough utility boxes to provide service to a larger portion of those Commerce Township residents."The franchise fee to be paid to the townsh...
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FDRERASE/OPEN a ?Secure Erase Utility for Enterprise Disk? earns US Governm
2008-02-21 07:48:00
(BUSINESS WIRE)--INNOVATION, using the SHARE 2008 Users Group Conference in Orlando as a backdrop, is announcing that FDRERASE/OPEN and FDRERASE for z/OS both earn US Government EAL2+ Certification for secure erasure of open systems and z/OS sensitive data. FDRERASE/OPEN and FDRERASE for z/OS meet US Government standards for purging and sanitizing large amounts of data on EMC, HDS and IBM disk storage systems. FDRERASE quickly and safely erases data from disks prior to disposal, reallocation or following a disaster recovery test and provides full verification of results and reports to auditors for review.?FDRERASE, in the combination of FDRERASE/OPEN and FDRERASE for z/OS, is the only US Government and international CCEVS certified data protection solution for the fast, secure and verifiable removal of all accessible data from enterprise disk systems shared by z/OS mainframe and open system servers. Joining FDRERASE for z/OS and FDRERASE/OPEN users now have a way to remove critical ...
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NTS To Unveil Their Compliance Testing Solutions at the 2008 Wireless and M
2008-02-20 09:25:00
February 19, 2008 ( PowerHomeBiz ) - Toronto, Canada --- WowGao Inc. announced today that NTS will be honoring 2008 Wireless Mobile Expo and Conference event with their presence, scheduled on July 15 & 16, 2008 at the Metro Toronto Convention Centre in Toronto, Canada. NTS is providing cost effective test and engineering services to the wireless and telecommunications market. Their vast regulatory agencies experience allows them for streamlined type approval certification reviews.Their Calgary facility is specialized in compliance testing of telecommunications and wireless products. Apart from that they are fully equipped to handle the full set of radios making them the best option in every aspect, be it EMC, Safety and Telecom certification testing according to FCC, R&TTE, UL/CSA/EN and other international specifications. NTS offers a range of capabilities and test systems including 3 and 10 meter semi-anechoic chambers for EMC/EMI testing. They are fully authorized and ...
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Celtel Uganda licence to be renewed
2008-02-15 07:44:00
THE Uganda Communications Commission (UCC) has okayed the renewal of the Celtel?s licence that will expire in September, the UCC executive director, Dr. Patrick Masambu, has said.?The UCC intends to recommend to the information and communications technology minister to grant an extension of Celtel?s licence under the new licensing regime unless there are valid objections to the proposed extension,? Masambu said. He said under the new framework, Celtel would be given two licences that include the Public Infrastructure Provider Licence for 15 years, which is renewable for another five years.?The second is the Public Service Provider Licence for a five-year term and it is also renewable subject to successful compliance with the licence provisions,? Masambu said at a public hearing about the renewal of the licence at Hotel Africana in Kampala. Earlier, he had presented a report about Celtel?s performance for 1993-2007.The report evaluated the company?s roll-out that showed that in 1993,...
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AT4 wireless to launch a new Development Tool to test NFC Technologies
2008-02-15 07:44:00
Barcelona, Spain , 12 February 2008 - AT4 wireless is launching an Upgrade of its leading test system RIDER, which covers now also testing for one of the currently most promising wireless technologies: NFC (Near Field Communication). NFC technology allows consumers to perform contactless transactions, access digital content and connect devices with the simplicity of a single touch.The RIDER NFC test system is the most complete test tool in the market for RFID and NFC technologies operating in the HF band (13,56 MHz).Fully integrated into a one-box test set, the new RIDER tester includes capturing and generation functionalities avoiding the use of digital scopes or arbitrary waveform generators for measuring the most significant RF and Protocol parameters over NFC devices.The RIDER NFC tester on its first release supports the ISO standards on which the NFC technology is based, i.e. ISO/IEC 14443 Type A & B and ISO/IEC 18092. Beyond that, and in order to cover existing design and v...
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Temasek Intervention Ruling to be Announced Next Week
2008-02-15 07:12:00
TEMPO Interactive, Jakarta: The panel of judges for the appeal of Temasek and nine other companies will announce the intervention ruling next Monday (18/2). The chairman of the panel of judges, Andriani Nurdin, conveyed this before closing the trial at the Central Jakarta District Court yesterday (13/2).The trial will be resumed Friday (tomorrow) for hearing the intervention applicants? responses and for the intervention ruling next Monday, said Andriani. The appeal occurred after the Business Competition Monitoring Commission (KPPU) found the Singapore's state-owned enterprise (SOE) Temasek and its two subsidiaries guilty of cross-ownership in two similar companies, PT Telekomunikasi Selular (Telkomsel) and PT Indosat Tbk.This practice is against the Antimonopoly and Unhealthy Competition State Decree No. 5/1999.As a penalty, Temasek must release its share ownership in either Indosat or Telkomsel to non-affiliated companies within two years after a conclusive verdict. KPPU restric...
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Telkom settles pensions debt
2008-02-14 09:21:00
Telkom Kenya yesterday moved to defuse friction between it and the Retirement Benefits Authority after it paid five billion shillings at the centre of a row pitting it against its pension scheme. It, however, emerged that the money was paid as the pensions regulator opened another war front by ordering the pension scheme managers to ensure Telkom paid accrued interest for the two months it had held onto the money.?If the cheque does not contain the accrued interest, the status quo remains,? said Mr Evans Nyakundi, the head of compliance at RBA. He said payment of the interest was necessary to cover for the pension scheme?s lost investment income over the two-month period.The Government wrote the five billion shillings cheque to Telkom Kenya last year as part of a debt settlement deal ahead of the company?s privatisation and for immediate payment. But by early this week, the money had not reached the pensions manager. The delay was reported to RBA, which on Monday blocked attempts by...
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Rx Networks to work with STMicroelectronics on Assisted GPS
2008-02-13 08:39:00
Efforts will build on multi-modal Assisted-GPS PlatformRx Networks Inc., announced that it has started cooperation in the area of Assisted GPS with STMicroelectronics. This modular extended ephemeris solution, based on Rx Networks GPStream? technology, and optimized for STMicroelectronics? GPS chipset portfolio, targets both network connected devices and connectionless devices. Initially targeting Personal Navigation Devices, thanks to its full compliance with telecommunication requirements, the solution is suitable for mobile phone applications.The solution set provides SUPL compliance, autonomous extended ephemeris for connectionless devices, and a highly compressed, lossless, extended ephemeris solution for devices that have network connectivity.The connectionless operation enable stand-alone GPS receivers to reduce time to first fix and maintain high initial fix accuracy by predicting satellite orbits. The network operation offer longer predicts, better accuracy & satellite ...
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Sky Detective's SD30 Tracking Device Receives FCC Certification
2008-02-13 04:44:00
BOISE, Idaho, Feb. 6, 2008 (PRIME NEWSWIRE) -- Sky Detective's SD30, a groundbreaking new GPS/CDMA tracking solution that offers substantially extended battery life with exceptionally accurate and sensitive positioning, received FCC approval today. One of the smallest and lightest devices of its kind, Sky Detective is developing a comprehensive service-offering, centered on the first of its custom hardware solutions.``We are very pleased that the SD30 received FCC approval,'' said Jerry Thompson, CEO of Sky Detective. ``This brings us even closer to distributing the most advanced tracking solution available in the industry and opens the door to carrier certification within the U.S, Asia Pacific and Latin America.''With configurable motion detection, rapid charging, extended life lithium-ion batteries, and other proprietary technologies, the SD30 leads the industry in features, price, and performance -- and at just over three inches long, it's contained in one of the most dimin...
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Certification of Mikrotik Wireless Outdoor Station by Jalawave Cakrawala, P
2008-02-06 08:35:00
Jalawave Cakrawala, PT., is one of the distributor for Mikrotik products in Indonesian Market. I Just want to inform you about Certification of Mikrotik Products by Jalawave Cakrawala, PT.Equipment : Mikrotik Wireless Outdoor Station Product of : MikrotikModel/Type : M548-OS-1MFH-C and M548-OS-2MFH-CCountry of Origin : LatviaCertificate Holder : Jalawave Cakrawala, PT., Graha Bumi Putra Lantai 8 Suite #804 Jl. Asia Afrika No. 141-149 Bandung, Jawa Barat Indonesia 40112NOTE:Operating Frequency : 2,4 GHz - 2,4835 GHzOutput Power : Two Devices are included in Wireless Local Area Network (LAN)Testing Fee/model and type is : Rp 4.000.000 For the Certificate fee included in transmisi categoriesCertificate Fee/model and type is : Rp 4.000.000 Two kind of fee above base on PP No. 28 Tahun 2005 Goverment Regulation, Jalawave Cakrawala,PT., in an authorized company who has the right for M548-OS-1MFH-C and M548-OS-2MFH-C Certificate.
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Certification Of Black berry Products By PT Alcorp Techno Partner
2008-02-06 07:40:00
Alcorp Techno Partner PT., is one of the distributor for Black Berry Products in Indonesian Market. I Just want to inform you about Certification of Research in motion Product (black berry 8100 "Pearl",8800 "Huron") by Alcorp Techno Partner PT. Equipment : Hand Phone GSMProduct of :Research in MotionModel/Type : Black Berry 8100 (pearl) & Black Berry 8800 (Huron)Country of Origin : CanadaCertificate Holder : Alcorp Techno Partner, PT., Ruko Permata Ancol Blok K/19 Jl. RE Martadinata - Pademangan - Jakarta Utara 14430Two Devices are included in Pesawat/Single Side Band (STB) SelulerTesting fee/type and model is : Rp 4.500.000For the Certification fee included in Customer Premises Equipment (CPE) categoriesCertificate fee/type and Model is : Rp 3.000.000Two kind of fee above base on PP No. 28 Tahun 2005 Goverment Regulation, Alcorp Techno Partner, PT., in an authorized company who has the right for Black Berry 8100 Pearl and 8800 Huron Certificate.
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Lapan to develop second satellite
2008-02-01 07:19:00
JAKARTA (JP): After successfully launching its LAPAN-TUBSAT satellite last year, the National Aeronautics and Space Agency (Lapan) is preparing to construct a second generation version of the earth surveillance satellite for orbit in 2010.While the construction of the first satellite took place in Germany under the supervision of a professor from the Technische Universitaet Berlin, the construction of the next, named LAPAN-A2, will take place in Indonesia entirely under Indonesian engineers,Lapan head Adi Sadewo Salatun told reporters in Bogor on Thursday.Adi said several Indonesian engineers had been fully involved in the development and manufacturing process of the LAPAN-TUBSAT satellite from 2003 to 2005. They also learned to control the satellite from the Rumpin ground station in Bogor throughout 2007."We gained very valuable experience from developing the LAPAN-TUBSAT satellite and operating it for a year; this is helping our engineers construct the LAPAN-A2 satellite independe...
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Defunct US spy satellite falling from orbit
2008-01-31 07:31:00
Washington (ANTARA News) - A defunct U.S. spy satellite is falling from orbit and could hit the Earth in late February or March, agencies reports said Saturday."Appropriate government agencies are monitoring the situation," Gordon Johndroe, spokesman for the National Security Council, told reporters."Numerous satellites over the years have come out of orbit and fallen harmlessly. We are looking at potential options to mitigate any possible damage this satellite may cause," he said.The satellite, which has lost power and propulsion, could contain hazardous materials, U.S. government officials said. Because the satellite could not be controlled any longer, it is unknown where the Earth it might hit, the officials said.Asked whether it is possible to intercept the falling satellite with missiles before it hits the Earth, spokesman Johndroe refused to comment.In 1979, Skylab, a 78-ton abandoned NASA space station fell from orbit in an uncontrolled manner. Its debris eventually dropped i...
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BlackBerry 8100c Red Pearl Phone (AT&T)
2008-01-29 11:27:00
BlackBerry 8100c Red Pearl Phone (AT&T) From AT&TList Price: $499.99Price: $0.01 & eligible for FREE Super Saver Shipping on orders over $25. DetailsTo purchase this product requires additional information that must be entered at Amazon. Click here to go to Amazon to purchase this item.Availability: Usually ships in 24 hoursShips from and sold by Amazon.comProduct DescriptionYou'll be amazed at the small, sleek form factor of the BlackBerry Pearl. It's like no other BlackBerry. But it's more than just a new look. This BlackBerry delivers everything its predecessors delivered and a whole lot more. The BlackBerry Pearl offers new features never before seen in a BlackBerry like, a 1.3 mega pixel camera, voice recognition, and an MP3 player to name a few. Try it for a few hours and you are hooked!Product Details
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BlackBerry 8100 Pearl myFaves Phone (T-Mobile)
2008-01-25 12:04:00
BlackBerry 8100 Pearl myFaves Phone (T-Mobile )From T-Mobile List Price: $349.99Price: $0.01 & eligible for FREE Super Saver Shipping on orders over $25. DetailsTo purchase this product requires additional information that must be entered at Amazon.Click here to go to Amazon to purchase this item.Availability: Usually ships in 24 hoursShips from and sold by Amazon.comProduct Description [more detail explanation]You'll be amazed at the small, sleek form factor of the BlackBerry Pearl. It's like no other BlackBerry. But it's more than just a new look.This BlackBerry delivers everything its predecessors delivered and a whole lot more. The BlackBerry Pearl offers new features never before seen in a BlackBerry like, a 1.3 mega pixel camera, voice recognition, and an MP3 player to name a few. Try it for a few hours and you are hooked!Product Details* Amazon Sales Rank: #82 in Cell Phone Accessories* Color: Black* Brand: BlackBerry* Model: 8100Features* 1.3 mega pixel camera t...
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BlackBerry Curve 8300 AT&T QWERTY Camera Phone
2008-01-25 12:04:00
Product Description[more detail description]Featuring a liquid silver finish, clean lines and soft edges, the Black Berry ® Curve 8300 smartphone is the smallest and lightest BlackBerry® smartphone ever to come with a full QWERTY keyboard.Its packed with incredible features*, including a camera, BlackBerry® Maps, a media player, expandable memory, Voice Activated Dialing, tethered modem and trackball navigation. Plus you get all the core functionality youve come to expect in a BlackBerry smartphone email and text messaging, instant messaging, web browser and advanced phone functionality.The BlackBerry Curve is designed to simply your life in a friendly, personal and easy-to-use package. Its your connection to everything that matters.Please note: This version of the BlackBerry Curve is carrier unlocked, so it can be used with any GSM carrier. It does ship with the AT&T logo on the device.
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Govt to launch book on macro indicators of Indonesia`s ICT
2008-01-25 07:55:00
Jakarta (ANTARA News ) - The government will soon launch a book on macro indicators of the county`s information and communication technology (ICT), an official said. "Communication and Information Minister Muhammad Nuh will launch the book on the ICT macro indicators on the occasion of a seminar on Indonesia Outlook 2008 on Thursday (Jan 31)," Achmad Jazidie of the Center for Technology and Industry Policies said on Thursday.He said the ICT macro indicators would hopefully encourage stakeholders, along with the government, to make positive contributions to the development of the ICT sector in the country.Meanwhile, Abdullah Alkaff, assistant to the communication and information minister, said the idea of writing the book came from Muhammad Nuh to give complete and accurate information on the conditions of the country`s information and communication technology.The government hoped the launching of the book would attract investors to the country, improve productivity and bolster the na...
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Indonesia in Fifth Place for Mobile Advertisement Users
2008-01-25 07:24:00
TEMPO Interactive , Jakarta: Indonesia is in fifth place of the users of advertisement services via Internet mobiles that can be accessed by cellular phones. According to research by AdMob, an United States' Internet mobile market network provider company, entitled Mobile Metrics Report 2008, advertisements in AdMob's network were seen 116 million times by Indonesia's inhabitants.The 116 million of number contributed 5.7 percent to the total AdMob's network advertisement impressions, 2.02 billion in the world throughout 2007. The advertisement users mostly used Nokia cellular phones. In the first place in AdMob's list is the United States advertisement market with 897 million ad impressions, followed by India, South Africa and England.In total, most of the advertisement viewers use Nokia products, followed by Motorola and Sony Ericsson. In the regional category, AdMob advertisement network's largest market is dominated by northern America with 45.8 percent market segment. As r...
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Altimo Still Aiming at Indosat's Shares
2008-01-24 04:09:00
TEMPO Interactive, Jakarta: A Russian company, the Altimo Group, is temporarily delaying its plan to buy Temasek Holdings's shares in PT Indosat Tbk. According to Soeharto, the Senior Altimo-Alfa Group Representative in Indonesia, the dispute between Temasek and the Business Competition Monitoring Agency (KPPU) is growing more complicated and will take a long time.However, Altimo is ready when the opportunity to talk to any party is open. According to Soeharto, Indosat is already 'available'.?We're ready any time. The price must be the market price. If it's over the market price, we'?ll think about it first,? he told Tempo last Tuesday (22/1) at his office at the GKBI building, Jakarta.
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Natrindo Admits Signing SMS Contract
2008-01-18 08:15:00
TEMPO Interactive, Jakarta: PT Natrindo Telepon Seluler (NTS) has acknowledged it also signed a contract for short message service (SMS) price setting with Pt Telekomunikasi Selular (Telkomsel) and PT Excelcomindo Pratama (XL). This was revealed during a further investigation into SMS tariff setting at the Business Competition Supervisory Commission (KPPU) yesterday (16/1).Dedie Martadisastra, the KPPU Investigation Assembly Chairman, said NTS signed the contract because as a new player, it had to follow the old players. NTS said the contract was signed by the old management, said Dedie after the investigation in Jakarta yesterday.Earlier, KPPU had scrutinized new operators, including PT Smart Telecom, PT Bakrie Telecom Tbk. and PT Hutchinson CP Telecommunications. PT Indosat Tbk. has also given statements during the second investigation. From the result of the earlier investigation, KPPU found that five operators were suspected of being involved in a SMS price cartel.NTS made the ...
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40 Companies Have Their Eye on Shares of XL?s Subsidiary
2008-01-17 05:41:00
TEMPO Interactive, Jakarta: Around 40 companies are targeting the shares of the new PT Exelcomindo Pratama Tbk?s (XL) subsidiary, which specializes in handling all the base transceiver station (BTS) towers that belong to the telecommunication operator company.This is despite the fact that, according to XL?s Managing Director, Hasnul Suhaimi, the subsidiary is still in the process of establishment. ?There have been 40 companies interested,? he said during the seminar of ?The Examination of Decision No 07/KPPU-L/2007, Dominant Position and Cross-ownership Case,? held by the Center for Strategic and International Studies in Jakarta yesterday (14/1).Hasnul said his company has between 6,000 and 7,000 towers throughout Indonesia. XL has around 10,000 BTS, comprising 9,000 2G networks and the remaining for the 3G network.Several towers among them were rented by four cellular operators, PT Hutchinson, PT Bakrie Telecom, PT Sampoerna Telekomunikasi Indonesia and PT Natrindo Telepon Seluler....
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Global System for Mobile communications "GSM"
2008-01-11 07:51:00
Global System for Mobile communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world. Its promoter, the GSM Association, estimates that 82% of the global mobile market uses the standard. GSM is used by over 2 billion people across more than 212 countries and territories.Its ubiquity makes international roaming very common between mobile phone operators, enabling subscribers to use their phones in many parts of the world. GSM differs from its predecessors in that both signaling and speech channels are digital call quality, and so is considered a second generation (2G) mobile phone system. This has also meant that data communication were built into the system using the 3rd Generation Partnership Project (3GPP).The key advantage of GSM systems to consumers has been better voice quality and low-cost alternatives to making calls, such as the Short message service (SMS, also called "text messaging"). The advantage for network ope...
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Code division multiple access (CDMA)
2008-01-11 07:51:00
Code division multiple access (CDMA ) describes a communication channel access principle that employs spread-spectrum technology and a special coding scheme (where each transmitter is assigned a code). In communications technology, there are only three domains that can allow multiplexing to be implemented for more efficient use of the available channel bandwidth and these domains are known as time, frequency and space.CDMA divides the access in signal space. By contrast, time division multiple access (TDMA) divides access by time, while frequency-division multiple access (FDMA) divides it by frequency. CDMA is a form of "spread-spectrum" signaling, since the modulated coded signal has a much higher bandwidth than the data being communicated.An analogy to the problem of multiple access is a room (channel) in which people wish to communicate with each other. To avoid confusion, people could take turns speaking (time division), speak at different pitches (frequency division), or speak i...
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High-Speed Downlink Packet Access"HSDPA"
2008-01-11 07:51:00
High-Speed Downlink Packet Access (HSDPA) 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. Current HSDPA deployments support down-link speeds of 1.8, 3.6, 7.2 and 14.4 Mbit/s. Further speed increases are planned for the near future. The networks are then to be upgraded to Evolved HSPA, which provides speeds of 42 Mbit/s downlink in its first release.TechnologyThe High-Speed Downlink Shared Channel (HS-DSCH) lacks two basic features of other W-CDMA channels ? variable spreading factor and fast power control. Instead, it delivers the improved downlink performance using adaptive modulation and coding (AMC), fast packet scheduling at the base station, and fast retransmissions from the base station, known as hybrid automatic repeat-request (HARQ).Hybrid automatic repeat-request (HARQ)HARQ uses ...
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