Tags: Telecom Network

Subscriber Identity Module SIM

Posted on May 19, 2019 by | 0 Comments
SMART card / SIM Card SMART Card It is an electronic circuit which is used to provide information about its holder. Subscriber Identity Module. In case of Mobile SIM card it enables a mobile device to communicate over telecom network.…
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Bluetooth and Ad hoc Network

Posted on May 2, 2019 by | 0 Comments
    Ad hoc Network. Ad Hoc network is a decentralized wireless network used for communication for a limited time period.   Piconet. A piconet is a Ad hoc using Bluetooth technology. One device act as a Master and others…
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Cloud Computing

Posted on July 18, 2018 by | 2 Comments
Cloud Computing Cloud computing is a computing infrastructure where a large pool of system are connected to internet for application, data and storage services. Pay as per use model Prerequisite:  Operating system, online storage Public Cloud Public clouds are owned…
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VoIP Voice Over Internet Protocol

Posted on July 10, 2018 by | 0 Comments
VoIP Voice Over Internet Protocol   Topics PSTN VoIP VoIP Architecture Codec VoIP Gateway Signalling Protocols VoIP Terminals Advantages and Disadvantages PSTN Public Switched Telephone Network It is known as landline telephone system. It was designed for purely analog voice…
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SONET Synchronous Optical Network

Posted on July 1, 2018 by | 2 Comments
SONET Synchronous Optical Network Multiplex electrical signals (Digital) from different sources and creates optical carrier (OC). USA, CANADA and JAPAN developed T1 Standard. ANSI develop  SONET. The rest of the world uses a primary rate of E1. ITU-T develop  SDH.…
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DWDM Dense Wavelength Division Multiplexing

Posted on January 22, 2018 by | 4 Comments
Prerequisite Multiplexing Optical Fiber PCM PDH SDH Transmission Fundamental WDM Wavelength division Multiplexing (WDM) technique increase the capacity of signal carrying medium. WDM technique assign different frequency / wavelength value to every incoming signal. These signals are multiplexed on a…
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Multiplexing

Posted on April 5, 2017 by | 2 Comments
  Multiplexing Multiplexing is a technique which allows sending multiple signals over a single data link. In simple words, Sharing of the medium between multiple signals. Topic. What is Multiplexing (MUX)? What is Demultiplexing? MUX types. FDM Frequency division MUX.…
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SDH Synchronous Digital Hierarchy

Posted on March 26, 2017 by | 17 Comments
SDH It is a transmission method. This method is used in optical fibre transmission system called SDH system. We have already discussed the basic concepts of the transmission system. This video will give you the basic concept of SDH. SDH =…
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PDH Plesiochronous Digital Hierarchy

Posted on March 7, 2017 by | 7 Comments
PDH Plesiochronous Digital Hierarchy PCM Pulse code modulation is the basic block for PDH SDH and SONET. Sampling frequency must be twice the higher frequency component of the signal. Voice frequency sampling rate 8KHz (0.3 to 3.4 KHz = 4KHz). Each…
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Ethernet

Posted on March 4, 2017 by | 0 Comments
Dailymotion Ethernet Introduction Ethernet is the name of LAN standard defined by IEEE 802.3. It was basically introduced as a LAN technology.With the introduction of Gb Ethernet. Now It is MAN and WAN standard. It is data link layer Protocol.…
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