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Remote Control Via GSM Network Presented BY:- Suleiman Altawarah Remote Control Via GSM Network Overview: Aim of project. Digital Wireless Telephony. Architecture of GSM. Project Components. Implementation and Experimental. Achievements. Conclusion. Aim of project

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Remote Control Via GSM Network

Presented BY:-

Suleiman Altawarah

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Remote Control Via GSM Network


  • Aim of project.

  • Digital Wireless Telephony.

  • Architecture of GSM.

  • Project Components.

  • Implementation and Experimental.

  • Achievements.

  • Conclusion.

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Aim of project

  • The main aim of the project is to implement an interfacing system to remotely control electrical appliances using the GSM network.

  • Using the system one can remotely switch on or off electrical machine using mobile phone.

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Digital Wireless Telephony Technologies

  • Time Division Multiple Accesses (TDMA).

  • Code Division Multiple Accesses (CDMA).

  • Global System for Mobiles) GSM(.

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History of the GSM

  • Mobile cellular systems introduced for commercial use in the 1980s.

  • In the beginnings of cellular systems, each country developed its own system, and so   

    - The equipment was limited to operate only within the boundaries of each country.

    - The market was also limited.

    To overcome these limitations, the Global System for Mobile communications (GSM) became in 1982.

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Specifications of GSM

  • Spectrum efficiency & voice quality.

  • International roaming.

  • Low mobile and base stations costs.

  • Compatibility with other systems (ISDN / PSTN ..etc.).

  • Ability to support new value added services.

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GSM Radio Interface

Two frequency bands, of 25 Mhz for the GSM system:

  • The band 890-915 Mhz for the uplink

  • The band 935-960 Mhz for the downlink

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Other Switching Nodes



Basic GSM Nodes


Radio Interface


GW Of another network


Another MSC

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GSM System Blocks

  • Mobile Station ( MS ).

  • Base Station Subsystem ( BSS ).

  • Network Switching Subsystem ( NSS ).

  • Operation and Maintenance Subsystem ( OMS ).

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The Mobile Station (MS)


The Mobile Equipment is said to be a Mobile Station if the Subscriber Identity Module ( SIM Card ) is added to it.

The SIM Card contains:

A processor and a memory. that stores:

- The international mobile subscriber Identity IMSI.

- The Authentication and ciphering keys.

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Base Station Subsystem ( BSS ).

  • Base Transceiver Station ( BTS )

  • Base Station Controller ( BSC )

  • Transcoder and Rate Adaptation Unit( TRAU ).

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Network Switching Subsystem (NSS)

  • Mobile Switching Center (MSC) .

  • Data Base Equipments :

    * Home Location Register (HLR)

    * Visitor Location Register (VLR)

    * Equipment Identity Register(EIR)

    * Authentication Center (AUC)

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GSM interfaces

  • 1. Um interface.

  • 2. A interface.

  • 3. A bis interface.

  • 4. Map (Mobile Application Part).

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Voice Modem

Modems classified with these characteristics:

  • Data/fax

  • Data/fax/voice

  • Data/fax/voice/speakerphone

    Voice Modem:capable of supporting voice functions provided by Telephone

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KDTele Tools

  • Component allows the software to pick-up and answer incoming calls automatically

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Parallel port

. Used to connect printers to computer.

. Used in computer to controlled devices.

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Positive Emitter Coupled Logic (PECL).

PECL: is an ultra-high speed digital logic technology and is based on a differential amplifier.

- Small signal swings switching.

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Implementation and Experimental

Project block diagram.

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Implementation and Experimental

Step #1 Programming.

Interactive Voice Response System(IVRS).

- IVRS: allows users to activate software through telephone keys.

- KDTele.

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Implementation and Experimental


  • Setting up the environment.

  • Downloading the component.

  • Downloading the (.DLL) file.

  • Adding the component to visual basic.

  • Recording the messages.

  • Writing the entire program.

  • Save & run.

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Implementation and Experimental

Step #2. (PECL) Design.

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Through out the course work of the project I have done the following:

  • I have studied different related subject to the project which enhances my knowledge.

  • My aimed was to implement it completely, but I have tested every suction, individually either by hardware implementation, or simulation by using accusim software.

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  • GSM network provide mobile phone system that allows roaming of users through the world , with no distance limitation, users can control their installation from over the world via the mobile telephone.

  • The propose of this system is very useful and it has different applications which make human life easier.

  • Finally, my benefit of the project is grate and I meet the aims of the project.