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Cellular Telecommunication of Info | Networking System | News | Technology of Mobile: September 2006 » GSM, CDMA, EDGE,3G, AMTS,VOIP,WIFI,WIMAX,SYSTEM TELECOMMUNICATION, MOBILE PHONE AND NETWORKING SYSTEM
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Overview of Cellular Phone Carriers. How many times have you heard of people spending hundreds of dollars on the latest and greatest cell phone only to be disappointed by the bad signal? Who are the main cell phone carrier? I don’t need to travel so roaming charges are not a worry to me:. Where else can I save money? What if I already have my own cell phone? What if I want to terminate my contract before it has officially ended? Posted by Admin, Saturday, September 30, 2006 9:04:00 AM 0 comments. GSM was...
info-cellular.blogspot.com
Cellular Telecommunication of Info | Networking System | News | Technology of Mobile: November 2006 » GSM, CDMA, EDGE,3G, AMTS,VOIP,WIFI,WIMAX,SYSTEM TELECOMMUNICATION, MOBILE PHONE AND NETWORKING SYSTEM
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Overview of TETRA Private Mobile Radio (PMR). TETRA is a modern standard for digital Private Mobile Radio (PMR) and Public Access Mobile Radio (PAMR). It offers many advantages including flexibility, security, ease of use and offers fast call set-up times. This makes it an ideal choice for many business communications requirements. For emergency services in Europe the frequency bands 380-383 MHz and 390-393 MHz have been allocated. These bands can be expanded to cover all or part of the spectrum from...
info-cellular.blogspot.com
Cellular Telecommunication of Info | Networking System | News | Technology of Mobile: February 2007 » GSM, CDMA, EDGE,3G, AMTS,VOIP,WIFI,WIMAX,SYSTEM TELECOMMUNICATION, MOBILE PHONE AND NETWORKING SYSTEM
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Lightweight Directory Access Protocol. The Lightweight Directory Access Protocol, or LDAP in computer networking,is a networking protocol for querying and modifying directory services running over TCP/IP. A directory is a set of information with similar attributes organized in a logical and hierarchical manner. The most common example is the telephone directory, which consists of a series of names (either of a person or organization) organized alphabetically, with an address and phone number attached.
info-cellular.blogspot.com
Cellular Telecommunication of Info | Networking System | News | Technology of Mobile: January 2007 » GSM, CDMA, EDGE,3G, AMTS,VOIP,WIFI,WIMAX,SYSTEM TELECOMMUNICATION, MOBILE PHONE AND NETWORKING SYSTEM
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GPS stands for Global Positioning System and it is a system that can provide a position at any point on the Earth's surface to a very high degree of accuracy. The Global Positioning System (GPS) uses 24 active Navstar satellites in orbit 11 000 miles above the surface of the Earth. The satellites themselves have a design life of ten years, but to ensure that there are no holes in service in the case of unexpected failures, spares are held in orbit and these can be brought into service at short notice.
info-cellular.blogspot.com
Cellular Telecommunication of Info | Networking System | News | Technology of Mobile: March 2007 » GSM, CDMA, EDGE,3G, AMTS,VOIP,WIFI,WIMAX,SYSTEM TELECOMMUNICATION, MOBILE PHONE AND NETWORKING SYSTEM
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Wireless Communication technology for the Multimedia. Bluetooth is Service was a communication technology wireless (without the cable) that operated in the frequency tape 2.4 of GHz unlicensed ISM (industrial, Scientific and Medical) by using one frequency hopping tranceiver that could provide the service and the voice of data communication in a manner real-time between host-host bluetooth and the distance of the range of the limited service (around 10 metre). In May 1998, the champion's 5 companies that...
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Cellular Telecommunication of Info | Networking System | News | Technology of Mobile: October 2006 » GSM, CDMA, EDGE,3G, AMTS,VOIP,WIFI,WIMAX,SYSTEM TELECOMMUNICATION, MOBILE PHONE AND NETWORKING SYSTEM
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Overview UMTS / WCDMA Part 2. UMTS, the Universal Mobile Telecommunications System is the third generation (3G) successor to the second generation GSM based technologies including GPRS, and EDGE. Although UMTS uses a totally different air interface, the core network elements have been migrating towards the UMTS requirements with the introduction of GPRS and EDGE. In this way the transition from GSM to the 3G UMTS architecture does not require such a large instantaneous investment. The scope of 3GPP was t...
info-cellular.blogspot.com
Cellular Telecommunication of Info | Networking System | News | Technology of Mobile: December 2006 » GSM, CDMA, EDGE,3G, AMTS,VOIP,WIFI,WIMAX,SYSTEM TELECOMMUNICATION, MOBILE PHONE AND NETWORKING SYSTEM
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The superheterodyne radio receiver. The signals generated by mixing or multiplying two signals together. Concept of the superheterodyne receiver. The basic concept of the superhet radio. Using a tuned circuit to remove the image signal. The tuned and amplified signal then enters one port of the mixer. The local oscillator signal enters the other port. The local oscillator may consist of a variable frequency oscillator that can be tuned by altering the setting on a variable capacitor. Alternat...Once the ...
info-cellular.blogspot.com
Cellular Telecommunication of Info | Networking System | News | Technology of Mobile: April 2007 » GSM, CDMA, EDGE,3G, AMTS,VOIP,WIFI,WIMAX,SYSTEM TELECOMMUNICATION, MOBILE PHONE AND NETWORKING SYSTEM
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The concept of the IMS (IP Multimedia Service)Procedure. The IMS foundation four safety the main specification. Delivery the service of multimedia communication characteristically real time and person to person with the IP basis (like voice or videotelepony), likewise his matter with communication person to mechine (like the service gabling). Integrated the service of multimedia communication real time (like the video streaming and live chatting). SIP that was used by IMS was as protocol application serv...