1 / 23

PRESENTED BY SHIVAM UPADHYAY ELECTRONICS & COMMUNICATION ENGINEERING YIT JAIPUR

PRESENTED BY SHIVAM UPADHYAY ELECTRONICS & COMMUNICATION ENGINEERING YIT JAIPUR. http://powerpointpresentationon.blogspot.com. COMPANY PROFILE. KEY FEATURES. WORLD 7 th LARGEST TELECOM COMPANY 24% MARKET SHARE HOLDER 47.3 MILLION LAND LINE CAPACITY 20.1 MILLION GSM CAPACITY

sarah-owens
Download Presentation

PRESENTED BY SHIVAM UPADHYAY ELECTRONICS & COMMUNICATION ENGINEERING YIT JAIPUR

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. PRESENTED BY SHIVAM UPADHYAY ELECTRONICS & COMMUNICATION ENGINEERING YIT JAIPUR http://powerpointpresentationon.blogspot.com

  2. COMPANY PROFILE

  3. KEY FEATURES • WORLD 7th LARGEST TELECOM COMPANY • 24% MARKET SHARE HOLDER • 47.3 MILLION LAND LINE CAPACITY • 20.1 MILLION GSM CAPACITY • 287 SATELLITE STATIONS

  4. SERVICES

  5. BASIC TELEPHONY Exchange Main Distribution Frame Primary cable Cabinet Pillar Distribution Panel Subscriber Secondary Cable Distribution Cable Drip Wire

  6. TELEPHONE EXCHANGE • A TELEPHONE EXCHANGE IS A SYSTEM OF ELECTRONIC COMPONENTS THAT CONNECTS TELEPHONE CALLS. • CLASSIFICATION OF TELEPHONE EXCHANGE • LOCAL EXCHANGE • TELEPHONE EXCHANGE LEVEL 2 • TELEPHONE EXCHANGE LEVEL 1 • GATEWAY EXCHANGE

  7. Types Of Exchange • MANUAL EXCHANGE Central battery Local battery • AUTO EXCHANGE PSTN ETNB EWSD

  8. MANUAL EXCHANGE Switchboard Operator in Manual Exchange

  9. AUTO EXCHANGE Digital Exchange Telephone Line cards

  10. MAIN DISTRIBUTION FRAME(MDF) • The fault of telephone number is removed in the MDF; hence it is called as Fault Remove Section. • For any type of testing firstly we need the vertical no. or N.E. number of that particular telephone number, than this number is tested by the live tester, printer and computer. • Live tester shows us that which type of fault occurs for that particular telephone number. The telephone numbers are also disconnected in the M.D.F., because of some specific reason.

  11. MDF

  12. MDF UNIT MDF Panel 01 MDF Panel 02 MDF Panel Blocks

  13. ELECTRONIC WORLDWIDESWITCH DIGITAL (EWSD) • The EWSD are Digital switching system is an integral part of the Powerful Network Solutions. • The EWSD switch is designed for incremental expansion in processing power, connectivity and services.

  14. Switching Network Access DLU LTG DLUC GP LTG GP Common Channel Signalling/Signalling System NetworkControl CCNC SSNC Coordination SYP EM CP MB MB SGC OMT CCG Distributed controls in EWSD

  15. BASIC ARCHITECTURE Digital line unit (DLU) Line/Trunk Group (LTG) Switching Network (SN) Coordination Processor (CP) Common Channel Signaling Network Control(CCNC)Unit or Signaling System Network Control (SSNC)

  16. Digital line unit (DLU) • Functional unit on which subscriber lines are terminated. • A single DLU has 4 Shelves, 16 Modules, and 16 Port. • Module stands for subscriber line module analog(SLMA). • Port stands for subscriber supported by the Module. • A Unique Equipment Number(NE) is given to each subscriber. Example-NE of a subscriber is represented by 10-1-1-14

  17. SN DLU LTG PDC0 with CCS DLU LTG PDC1 without CCS PDC2 with CCS PDC3 without CCS CCITT standard interface G.703 CP Connection of Digital Line Unit

  18. Line Trunk Group (LTG) • Digital Trunks and DLUs are connected to LTGs. • The line/trunk groups (LTG) forms the interface between the digi­tal environment of a EWSD exchange and the switching network (SN). Functions of LTG • Call processing functions • Safeguarding functions • Operation and maintenance functions AN LTG CONSISTS OF 4 PCM

  19. Coordination Processor (CP) It is used for system-wide coordination functions, such as, routing, zoning, etc. However each subsystem in EWSD carryout practically all the tasks arising in their area independently. Functions of CP • Storage and administration of all programs, exchange and subscriber data, • Communication with operation and maintenance centers, • Handling of the man-machine interface.

  20. Switching Network (SN) All the LTGs are connected to the SN which inter connects the line and trunks connected to the exchange in accordance with the call requirement of the subscribers. CCNC and CP are also connected to SN. Different peripheral units of EWSD are connected to the SN via 8192 kbps highways called SDCs (Secondary Digital Carriers).

  21. Switching Techniques In SN Time Switching The speech samples are stored and transferred to the output during a different timeslot, this technique of timeslot interchange of information is called time switching. In the time switch, the incoming information is written sequentially in a memory.

  22. Space Switching In space switching, a dedicated path is established between the two subscribers for the entire duration of the call. In digital exchanges, speech is coded on PCM and the information is transferred at the same instant of time from input to output.

More Related