1 / 21

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.

olathe
Download Presentation

SEMINAR ON INDUSTRIAL TRAINING

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related