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Showing posts with label TeleCommunication. Show all posts
Showing posts with label TeleCommunication. Show all posts

Friday, October 19, 2012

Mobile Phone Secret Codes !

Hello visitor ,Today today I'll tel some secret code of Many Mobile Phone Provider Like Nokia,Siemens,I-Phone,Samsung,China Mobile Phone ETC.

Mobile Phone Secret Codes
I-Phone
Nokia
Samsung
China Phone

A Personal Unlock Code (PUC), also known as a PIN Unlocked Key (PUK), is used in 3GPP mobile phones to reset a personal identification number (PIN) that has been lost or forgotten.
Most mobile telephones offer the feature of PIN (PIN) protection. After switching on the phone, if the PIN security function is active, the user is requested to enter a 4-8 digit PIN enabling the phone's non-emergency calling functions. If the wrong PIN is typed in more than three times, either the SIM card, the device or both become locked. They can be reverted to their original unlocked state by entering a PUC, provided by the service operator through verification. If the wrong PUC is entered ten times in a row, the device will become permanently blocked and unrecoverable, requiring a new SIM card. Cellular phone users are therefore advised by most providers to keep their PUC written down in a safe place separate from the device.
The PUC (PUK) is a SIM-specific code assigned by the service provider. It is near-impossible to guess and enter it; thus, if a user does not know his or her PUC and is prompted for it, it should be obtained from the service provider.
Once you enter the PUK code, you must set a pin. The PUK (Personal Unblocking Key) and PUK2 are used to unlock the PIN and PIN 2 codes respectively if your SIM card is blocked.[1]

Friday, October 5, 2012

Wireless Lan Networking Introduction !

Introduction: Wireless technology has helped to simplify networking by enabling multiple computer users to simultaneously share resources in a home or business without additional or intrusive wiring. These resources might include a broadband Internet connection, network printers, data files, and even streaming audio and video. This kind of resource sharing has become more prevalent as computer users have changed their habits from using single, stand-alone computers to working on networks with multiple computers, each with potentially different operating systems and varying peripheral hardware. U.S. Robotics wireless networking products offer a variety of solutions to seamlessly integrate computers, peripherals, and data. Wireless networking enables the same capabilities and comparable speeds of a wired 10BASE-T network without the difficulties associated with laying wire, drilling into walls, or stringing Ethernet cables throughout an office building or home. Laptop users have the freedom to roam anywhere in the office building or home without having to hunt down a connector cable or available jack. Every room in a wireless home or office can be “connected” to the network, so adding more users and growing a network can be as simple as installing a new wireless network adapter. Reasons to choose wireless networking over traditional wired networks include: · Running additional wires or drilling new holes in a home or office could be prohibited (because of rental regulations), impractical (infrastructure limitations), or too expensive · Flexibility of location and data ports is required · Roaming capability is desired; e.g., maintaining connectivity from almost anywhere inside a home or business · Network access is desired outdoors; e.g., outside a home or office building.
Wireless Lan
Wireless Lan
Wireless LANs in the Office:  An 802.11 network is the ideal solution for a network administrator in many respects. No longer is it a requirement that every workstation and conference room be wired up to hubs and switches with cables in hard-to-reach areas. Wireless networking allows for impromptu meetings in cafeterias, hallways, courtyards, or wherever inspiration strikes while providing real-time LAN connectivity for business applications such as sending e-mail, working on spreadsheets on shared drives, and conducting market research.
Wireless LANs in Home: The Wireless networking has become commonplace, and with prices reduced to a fraction of what they were, it is no wonder that wireless networking products have transitioned from the office and into the home. For the home user, a wireless network provides freedom in convenience and lifestyle to exchange words, data, and music or video with any computer ­ across the Internet, or around the world. Home users can create a wireless network out of an existing wired network and wirelessly extend the reach of the Internet throughout the home on multiple computers, making it more convenient for everyone to get online.

Mobile Switching Center(MSC)

Mobile Switching Center(MSC)

Mobile  Switching  Center::The MSC is the heart of the GSM network. It handles call routing, call setup, and basic switching functions. An MSC handles multiple BSCs and also interfaces with other MSC’s and registers. It also handles inter-BSC handoffs as well as coordinates with other MSC’s for inter-MSC handoffs.
The Mobile Switching Centre Server, or MSC Server abbreviated MSS, is a 3G core network element which controls the network switching subsystem elements. Alternatively or adaptively, MSS can be used in GSM networks as well, if the manufacturer has implemented support for GSM networks in the MSS. Since an immediate upgrade of existing GSM network to 3G is not viable due to various issues like handset incompatibilities and high expenditure, most manufacturers do implement GSM support in MSS. In fact, MSS along with other 3G network elements such as media gateway (MGW), can be configured to support GSM network exclusively and can be considered as an upgraded version of existing GSM mobile switching Centres. The MSC Server is standards-based and communicates with other distributed elements using industry open standards such as media gateway control protocol, megaco/H.248, session initiation protocol, M2UA and M3UA. The MSC server incorporates industry standards as defined by ETSI, ITU, GSM, 3GPP and 3GPP2 and other leading standard bodies. The MSS supports the regulatory environment set by governing bodies via its support for E911, CALEA/legal intercept, wireless and local number portability, TTY/TTD, and Number Pooling requirements.

Alternatively MSS is also called an MTS-U (Motorola telephony soft-switch) in Motorola terminology, and as MSC-S in Ericsson terminology. MSC server functionality enables split between control (signalling) and user plane (bearer in network element called a media gateway), which guarantees better placement of network elements within the network.
MSC server and MGW makes it possible to cross-connect circuit switched calls switched by using IP, ATM AAL2 as well as TDM.

Base Station Controler(BSC) !

Base Station Controler(BSC)

Base Station Controller (BSC)
Base Station Controller (BSC)
Base Station Controller (BSC) - The BSC controls multiple BTSs. It handles allocation of radio channels, frequency administration, power and signal measurements from the MS, and handovers from one BTS to another (if both BTSs are controlled by the same BSC). A BSC also functions as a “funneler”. It reduces the number of connections to the Mobile Switching Center (MSC) and allows for higher capacity connections to the MSC.
A BSC my be collocated with a BTS or it may be geographically separate. It may even be collocated with the Mobile Switching Center (MSC).
*The interface between the BTS and the BSC is known as the Abis Interface
*The Base Transceiver Station (BTS) and the Base Station Controller (BSC) together make up the Base Station System (BSS).
  • More info please visit this page, To see more Image of Base Station Subsystem (BSS).
  • More information from wikipedia, To see more Information of Base Station Controller (BSC) .
  • More About Of BTS components !

    BTS Components

    BTS  Room
    BTS Room
    A Base Transceiver StationOr BTS has many components{Indore components Ex:Main Distribution Bord(MDB),Rectifier,Environment Monitoring Unite(EMU),DC Ventilation System(DVS),Air conditioner,Generator,Battery Bank(BB),BTS cabinet or RBS,Transmit ion rack,Aviation light controller Etc.Outdoor Ex:Stell Tower,Gsm Antena,RRU,Microwave Antena,TMA,TMB,Aviation Light & Optical Fiber cable,Coxial super flex/flex 1/2,7/8,15/8 rms 

  • More Image please visit this page, To see more Image of Rectifire.
  • More Image please visit this page, To see more Image of MDB.
  • More Image please visit this page, To see more Image of Tx Rack.
  • More Image please visit this page, To see more Image of BTS/RBS.
  • More Image please visit this page, To see more Image of Environment Monitoring Unite.
  • More Image please visit this page, To see more Image of Gsm / Microwave Antena.
  • More Image please visit this page, To see more Image of Remote Radio Unite(RRU).
  • BTS Hardware structure !

    BTS Hardware structure

    BTS/RBS: Hardware Mainly consist of BBU,DRFU,MRFU,DCDU-01,GATM,PMU,PSU,Fan Box,CXU,DXU,CDU,Transmition Adaptor & !
    Some connection/Chasecating.The one-page summary that follows will give you all the
    information you need to get started Your Knowledge Base Help Topics from the Help menu.

      
    A Quick Overview of BTS/RBS Components
    The BBU structure includes Four tabs:
    • The typical power consumption of BBU is 50 W.
    • The BBU is small box with all the extranal ports on the front panel.
    • The BBU 3900 boards consist of the BSBC,UEIU,GTMU and UELP.
    • The BBU3900 modules consist of the UBFU and the UPEU.


    The DBS3900 structure includes Four tabs:
    • The DBS3900 consist of the BBU3900 and the RRU3004.
    • The BBU3900 is an indoor baseband unit.It provides physical interfaces for connection with the BSC and RRU.It performs centralized management(OM and signaling processing)of the entire base station system and provides reference clock for the system.
    • The RRu3004 is an outdoor remote RF unit.It processes baseband signals and RF signals.
    • The Local Maintanance Terminal(LMT) and Men-Machine interactive(MMI) can implement the Maintanance of the DBS3900 through the BBU.
    The DRFU structure includes Four tabs:-
    • The BBu and Drfu support multiple network topologies such as star,chain and ring topologies.
    • Drfu Receive Mode/Two way Receive Diversity:- In this mode both of the 2TRXs can work.Each TRx receives the signal from 2 feeders.
    • DRFU Mode:- DRFU transmit mode(Transmit independency combining,PBT,Transmit diversity.DRFU receive mode(2 way and 4 way receive diversity .
    • DRFU Antena Mode:- The DRFU module has 1 working TX/RX feeder and 2 way receive diversity one of the receiver is from the another DRFU(single antena,double receiver).The DRFU module has 2 working TX/RX feeders and 2 way receive diversity(Double antenas).The DRFU has 2 working TX/RX feedersand 4 way receive diversity(Double antenas,4 receivers).

    Base Transceiver Station (BTS)

    Base Transceiver Station (BTS) – The BTS is the Mobile Station’s access point to the network. It is responsible for carrying out radio communications between the network and the MS. It handles speech encoding, encryption, multiplexing (TDMA), and modulation/demodulation of the radio signals. It is also capable of frequency hopping. A BTS will have between 1 and 16 Transceivers (TRX), depending on the geography and user demand of an area. Each TRX represents one ARFCN.
    One BTS usually covers a single 120 degree sector of an area. Usually a tower with 3 BTSs will accommodate all 360 degrees around the tower. However, depending on geography and user demand of an area, a cell may be divided up into one or two sectors, or a cell may be serviced by several BTSs with redundant sector coverage.
    A BTS is assigned a Cell Identity. The cell identity is 16-bit number (double octet) that identifies that cell in a particular Location Area. The cell identity is part of the Cell Global Identification (CGI), which is discussed in the section about the Visitor Location Register (VLR).


    Also see more about

    More About of Mobile Station(MS)

    *The Mobile Station (MS) is made up of two components:
    Mobile Equipment (ME) This refers to the physical phone itself. The phone must be able to operate on a GSM network. Older phones operated on a single band only. Newer phones are dual-band, triple-band, and even quad-band capable. A quad-band phone has the technical capability to operate on any GSM network worldwide.
    Each phone is uniquely identified by the International Mobile Equipment Identity (IMEI) number. This number is burned into the phone by the manufacturer. The IMEI can usually be found by removing the battery of the phone and reading the panel in the battery well.
    It is possible to change the IMEI on a phone to reflect a different IMEI. This is known as IMEI spoofing or IMEI cloning. This is usually done on stolen phones. The average user does not have the technical ability to change a phone’s IMEI.
    Subscriber Identity Module (SIM) – The SIM is a small smart card that is inserted into the phone and carries information specific to the subscriber, such as IMSI, TMSI, Ki (used for encryption), Service Provider Name (SPN), and Local Area Identity (LAI). The SIM can also store phone numbers (MSISDN) dialed and received, the Kc (used for encryption), phone books, and data for other applications. A SIM card can be removed from one phone, inserted into another GSM capable phone and the subscriber will get the same service as always.
    Each SIM card is protected by a 4-digit Personal Identification Number (PIN). In order to unlock a card, the user must enter the PIN. If a PIN is entered incorrectly three times in a row, the card blocks itself and can not be used. It can only be unblocked with an 8-digit Personal Unblocking Key (PUK), which is also stored on the SIM card.


    See more by wikipedia

    Wednesday, August 29, 2012

    Find any Telephone number owner in Bangladesh !

    Today I explain How to find any telephone number owner and his/her address in Bangladesh.The phone number of a land that you can find out the name and address of the user. It can be a very simple manner.Just flow the simple  step.
    1.Go to the page http://www.btcl.gov.bd/bill/bill.htm Or BTCL Hack
    See the Image bellow.
    2.Then you see the login page.See the Image bellow.
    3.Now click Login.See the Image bellow.
    4.First CUSTOMER ID (AREA CODE + PHONE) The name and address of the user that you are using the phone number that you want to enter the number, including 02 mean area code. The number 02 is the same as PASSWORD and enter the login.
    5. Click Login on the following pages and be open a page look like.See the Image bellow.
    6.Now click PRINT/VIEW CUSTOMER BILL on the following pages and be open a page look like.See the Image bellow.
    7.Click Marked Option on the following pages and be open a page look like.See the Image bellow.
    8.Fill in the Gap and Press Submit.Now you got a payment status page with victim's Address.
                                                                                            

                                                                                                                                                                      Thanks !



     


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