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what is grade of service grade of service in a loss system the traffic carried through the network is usually lower than the actual traffic offered
explain importance of modems used in data transfer and list some of the v-series recommendationsthe series also describes a variety of dces using
give an account of modems used in data transfermodem modems are usually provided through network operators department of telecommunication in india
explain data rates in public switched telephone networkdata rates in pstns a voice channel in a public switched telephone network is band restricted
classify data networksdata network classificationsdata networks are classified as per to their geographical coverage- wide area networks wans-
what are the major systems of a telecommunication network the main systems of any telecommunication network may contain the following main systemsa
explain public switched telephone networkpstn public switched telephone network this is public switched telephone network pstn which accommodates two
explain common channel signallingcommon channel signalling signaling systems connection the variety of transmission systems switching systems and
explain congestioncongestion this is uneconomic to provide sufficient equipment to carry entire traffic that could possibly be given to a
explain services of application layerapplication layeras the highest layer within the osi reference model the application layer gives services to the
explain briefly the function of different layers which are covered under end to end layer connectivitydifferent layer are as follows1 transport
what layers are covered under end to end layer connectivity the layers 4 to 7 of iso-osi reference model communicate along with peer entities into
what is the need of a hybrid in telephone networks digital exchanges need receive and transmit signals upon separate two-wire circuits it calls for
what is meant by common controlin several switching systems the control subsystem may be an integral part of the switching network itself this system
what is common control switching system explaincommon control switching system it is a functional block diagram of a common control switching system
how can system improved if one arrive at the probability of availability of free lines during the busy hourimprovement can be made when the system is
how does one arrive at the probability of availability of free lines during the busy hourone can arrive at the possibility of free lines throughout
explain a standard set of procedure for completing a local telephone call or call processingcompleting a local telephone call among two subscribers
name the switching schemes used in a digital exchangethe several switching systems used are 1 strowger switching system2 cross bar switching3
discuss the csmacd and csmaca protocolscsmacd this is an access method used mainly with lans configured in a bus topology along with csmacd any
explain the access methods used in lans access methods utilized in lani switched access this is used in lans which are assigned around cbxselectronic
explain the terms topology used in lansi lan topologies this network topology is a physical schematic that shows interconnection of the several users
what are the end-to-end layers of osi structurethe layers 4 to 7 of iso-osi reference model communicate along with peer entities into the end systems
explain the transport layer in detailtransport layer the transport layer controls and makes sure the end-to-end integrity of the data message
explain the mechanisms of propagation of radio communicationradio communication deals along with electronic radiation of electromagnetic energy from