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S-Fone is the first and biggest national cellular mobile phone network using CDMA in Vietnam (followed by EVN Telecom and HT Mobile).On 9 October 2006, S-Fone officially launched CDMA 2000 1x EV-DO value added services for the first time in Vietnam: VOD/MOD (Video, TV on demand, music on demand) and mobile Internet (enabling internet access for PCs and laptops via S-Fone network) beginning in ...
Operator acquired by T-Mobile. Sprint (incl. Open Mobile) United States Puerto Rico U.S. Virgin Islands: CDMA2000 1xRTT, EV-DO Rev. A 800 (BC10) 1900 Aug 2002: Mar 2022: Operator acquired by T-Mobile. UScellular United States: CDMA2000 1xRTT, EV-DO Rev. A 800 / 1900 Oct 2002 Jan 2024 Gradual EV-DO shut down since Oct 2021.
S-Fone (directly under CDMA S-Telecom): 095 [5] Vietnamobile (ex-HT Mobile): 092, 052, 056, 058 [6] Beeline (directly under G-Tel): 059, 099 [7] At the beginning of 2013, S-Fone and Beeline services are temporarily shut down due to hard competitions with other mobile operators.
CDMA2000 1X (IS-2000), also known as 1x and 1xRTT, is the core CDMA2000 wireless air interface standard.The designation "1x", meaning 1 times radio transmission technology, indicates the same radio frequency (RF) bandwidth as IS-95: a duplex pair of 1.25 MHz radio channels. 1xRTT almost doubles the capacity of IS-95 by adding 64 more traffic channels to the forward link, orthogonal to (in ...
The Packet Data Serving Node, or PDSN, is a component of a CDMA2000 mobile network. [1] It acts as the connection point between the radio access and IP networks. This component is responsible for managing PPP sessions between the mobile provider's core IP network and the mobile station (mobile phone). It is similar in function to the GGSN (GPRS ...
In 3G, the most prevalent technology was UMTS with CDMA-2000 in close contention. All radio access technologies have to solve the same problems: to divide the finite RF spectrum among multiple users as efficiently as possible. GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA.
A CDMA subscriber identity module ( CSIM) is an application to support CDMA2000 phones that runs on a UICC, with a file structure derived from the R-UIM card. By porting the application to the UICC (Universal Integrated Circuit Card), a card with CSIM, SIM, and USIM can operate with all major cellular technologies worldwide.
This predates and is distinct from its use in mobile phones. The Qualcomm standard IS-95, marketed as cdmaOne. The Qualcomm standard IS-2000, known as CDMA2000, is used by several mobile phone companies, including the Globalstar network. [nb 1] The UMTS 3G mobile phone standard, which uses W-CDMA. [nb 2]