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SEMINAR ON INDUSTRIAL TRAINING

SEMINAR ON INDUSTRIAL TRAINING. AT BHARAT SANCHAR NIGAM LIMITED. PRAVEEN SOLANKI. VII SEM. B-TECH , EIC. GLOBAL INST. OF TECH, JAIPUR. Keynote of our training. Provides affable environment. To familiarize with various communicating technology.

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SEMINAR ON INDUSTRIAL TRAINING

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  1. SEMINAR ON INDUSTRIAL TRAINING AT BHARAT SANCHAR NIGAM LIMITED PRAVEEN SOLANKI VII SEM B-TECH , EIC GLOBAL INST. OF TECH, JAIPUR

  2. Keynote of our training • Provides affable environment. • To familiarize with various communicating technology. • Time Management with various Modules. • Team Management with members. • Building up practical skills. • Imparting leadership quality.

  3. INTRODUCTION Profile at a glance • 4th largest telecommunication company in asia and 7th largest in the world. • Provides GSM and basic telephony service and first company in India providing 3G. • More than 3 laces of employees, officers and engineers are working at present.

  4. Partial list of BSNL services -> WLL (wireless in locked loop) -> GSM (global system for mobile communication) -> CDMA (code division multiple access) -> MTNL ( mahanagar telephone nigam limited)

  5. Wireless in locked loop WLL • What is WLL? • Communication system that connects us to PSTN. • Use Radio Frequency Signals. • Useful for Subscribers located in pockets.

  6. Provides 2 types of services – • Fixed WLL • WLL with portability • Features of WLL – • Dynamic STD/ISD locking. • Call Waiting / Call transfer. • Call Forwarding. • STD / ISD call details.

  7. FIXED WLL SERVICE • Provided using a telephone instrument. • FWT will be wall mounted. • Short cable connected from outdoor aerial to wall set. • Wall set powered by an a.c. supply.

  8. PORTABLE WLL SERVICE • Provides portability feature to WLL subscriber. • This can be done by a portable hand Set which can be carried in the pocket.

  9. GLOBAL SYSTEM FOR MOBILE COMMUNICATION GSM History - Torleiv Maseng is regarded as the father of the GSM Technology. - 1989, GSM responsibility was transferred to the European Telecommunications Standards Institute (ETSI) - first GSM network was launched in 1991 by Radiolinja in Finland with joint technical infrastructure maintenance from Ericsson.

  10. GSM frequencies • 2G GSM networks operate in the 900 MHz or 1800 MHz bands • GSM-900 uses 890–915 MHz to send information from the mobile station to the base station (uplink) • 935–960 MHz for the other direction (downlink), • providing 125 RF channels (channel numbers 0 to 124) spaced at 200 kHz. Duplex spacing of 45 MHz is used

  11. NETWORK STRUCTURE

  12. Mobile Station (MS) & Subscriber Identity Module (SIM) • MS refers to the physical phone itself. • uniquely identified by the International Mobile Equipment Identity (IMEI) number. • Sim is small smart card that is inserted into the phone and carries information specific to the subscriber

  13. BaseTransceiver Station (BTS) • carry out radio communications between the network and the MS • handles speech encoding, encryption, multiplexing (TDMA), and modulation/demodulation • between 1 and 16 Transceivers (TRX)

  14. BASE STATION CONTROLLER (bsc) • allocation of radio channels • frequency administration • power and signal measurements from the MS, • handovers from one BTS to another

  15. MOBILESWITCHING CENTER (msc) • call routing, call setup, and basic switching functions • iner-BSC handoffs as well as coordinates with other MSC's for inter-MSC handoffs.

  16. Gateway Mobile Switching Centre (GMSC) • gateway between two • networks • switch to the Public Switched Telephone Network (PSTN).

  17. HLR & VLR • HLR maintains subscriber- specific information such as the MSISDN, IMSI, current location • of the MS, roaming restrictions, • VLR is a database that contains • a subset of the information • located on the HLR

  18. Equipment Identity Register (EIR) & Authentication Centre (Auc) • EIR is a database that keeps • tracks of handsets on the network • using the IMEI • handles the authentication and • encryption tasks for the network

  19. APPLICATIONS • All PSTN applications • Integrated access node • CSNMM - ADSL + Voice • Backward compatible with • CSNMA • CSE • Support for V5.2 for access nodes • Trunk Automatic Exchange (TAX) • International Gateway • Signaling transfer point (STP) • IN • SSP • Mobile applications • GSM /GPR

  20. THANKYOU

  21. QUERRY QUERRY QUERRY QUERRY QUERRY

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