Signalling transfer point (STP) exist in
 (A) Strowger exchange (B) SS7
 (C) Local area network (D) PABX

1 Answer

Answer :

(B) SS7

Related questions

Description : SS7 Protocol uses: (A) Out of band signalling. (B) Associated signalling. (C) Speech control signalling. (D) No signalling.

Last Answer : (A) Out of band signalling.

Description : Common channel signalling in SS7 is (A) out band control channel. (B) in band control channel. (C) speech control channel. (D) none of the above.

Last Answer : (B) in band control channel.

Description : The Signalling connection control part (SCCP) and message transfer part (MTP) together are referred to as (A) Signal Switching Points (SSPs) (B) Signal Transfer Points (STPs) (C) Signal Control Points (SCPs) (D) Network service part (NSP)

Last Answer : (D) Network service part (NSP)

Description : SPC is used for (A) Carrying Exchange Control Functions (B) Carrying Subscriber Control Functions (C) Exchange Hardware (D) Signalling Purpose

Last Answer : (A) Carrying Exchange Control Functions

Description : What are the different tones used in strowger telephony? Explain with the help of waveforms and the timings.

Last Answer : Dial Tone: This tone is used to indicate that the exchange is ready to accept dialed digits from the subscriber. The subscriber should start dialing only after hearing the dialing tone. Sometimes, ... as the call progresses through different exchanges. Fig. shows a routing tone pattern.   

Description : The______electro mechanical switch (developed in 1938) had fewer moving parts than earlier switches. (A) No. 1ESS (B) Strowger (C) Step-by-step (D) Crossbar

Last Answer : (D) Crossbar

Description : Trunks are the lines that run between (A) Subscribers and exchange (B) Switching system and power plant (C) Local area network (D) Switching stations

Last Answer : (D) Switching stations

Description : Trunks are the lines that run between (A) subscribers and exchange (B) switching system and power plant (C) Local Area Network (D) switching systems

Last Answer : (B) switching system and power plant

Description : Trunks are the lines that run between (A) Subscribers and exchange (B) switching system and power plant (C) Local area network. (D) Switching stations.

Last Answer : (D) Switching stations.

Description : Explain the architecture of SS7 and compare with seven-layer OSI architecture.

Last Answer : A block schematic diagram of the CCITT no. 7 signaling system is shown in fig. Signal messages are passed from the central processor of the sending exchange to the CCS system. This consists of the microprocessor based ... part (TUE), the data user part(DUP) and the (ISDN) user part (ISDN-UP).  

Description : Explain the process of inter-register signalling.

Last Answer : Registers are used in common control exchanges to store and analyze routing data. They are provided on a common basis is a single register provides routing data for a number of speech circuits. Once a call ... it is released and the originating register signals to the next register.

Description : What are the advantages of CCS over in-channel signalling?

Last Answer : The advantages of CCS over in-channel signalling are listed below: a. Information can be exchange between the processors much more rapidly than when channel associated signaling is used. b ... for functions other than call processing, for example for maintenance or network management purposes. 

Description : What are different control function categories, explain, how they help in signalling and control.

Last Answer : In some switching systems, the control subsystem may be an integral part of the switching network itself. Such system is known as direct control switching systems. Those systems in which the control ... may be carried out at the level of the common control unit or the switching network.  

Description : Explain what is DTMF signalling.

Last Answer : Dual Tone Multi Frequency (DTMF) was first introduced in 1963 with 10 buttons in Western Electric 1500 -type telephones. DTMF was originally called TouchTone. DTMF is a more efficient means than ... ). The letters were originally used to identify one local telephone exchange from another.  

Description : Describe the various signalling techniques. Compare in-channel signalling with common channel signaling, which is more advantageous.

Last Answer : Signaling systems link the variety of switching systems, transmission systems and subscriber equipments in telecommunication network to enable the network to function as a whole. Three forms of signaling are ... for passing control signals for a group of trunks or information       

Description : A/An ______network is typically a company network that connects multiple company locations into a single network. (A) local area (B) enterprise (C) campus wide (D) protocol.

Last Answer : (B) enterprise

Description : A distributed network configuration in which all data/information pass through a central computer is (A) Bus network (B) Star network (C) Ring network (D) Point to point network

Last Answer : (B) Star network

Description : Network with point-to-point link is known as (A) Fully Connected Network (B) Half Connected Network (C) Duplex Connected Network (D) None of these

Last Answer : (A) Fully Connected Network

Description : The number of point to point links required in a fully connected network for 50 entities is (A) 1250 (B) 1225 (C) 2500 (D) 50

Last Answer : Ans: (C)

Description : What are the different ways of designing 100 line exchange using uni selector and two motion selectors? Show at least three variations. Which is the best option?

Last Answer : Here three different designing methods for 100 line exchange are discussed: Design 1: Here, Strowger switching system is designed using one two-motion selector for each subscriber. A ... only under certain specific traffic conditions and generally lead to higher blocking probabilities.  

Description : Explain crossbar exchange, with all call processing steps and diagrams

Last Answer : The basic idea of crossbar switching is to provide a matrix of n x m sets of contacts with only n + m activators or less to select one of the n x m sets of contacts. This form of ... a contact is established at the cross point 6 such that the subscriber B is connected to the subscriber C. 

Description : In a hundred-line exchange 24 two-motion selectors are used. Draw the schematic you suggest for this exchange and explain its working. How many simultaneous calls can be made during peak hour in this exchange?

Last Answer : The desired schematic for 100 lines exchange with 24 two motion selectors is shown in Fig.   In the case, 24 simultaneous calls can be put through the switch . Typically, a 24- ... selector. At the next step, the two-motion selector responds to the dial pulses for appropriate connection.

Description : Write short notes (i)Telephone hand set and it’s working. (ii) CPU based exchange

Last Answer : (i) A standard telephone set is comprised of a transmitter, a receiver, and electrical network for equalization, associated circuitry to control side tone levels and to regulate signal power, ... commands are designed to be of variable length necessitating the use of an end-of-command symbol  

Description : Name the switching schemes used in a digital exchange. How call processing takes place?

Last Answer : The different switching systems used are: 1. Strowger Switching System 2. Cross bar Switching. 3. Electronic Switching System Basic Call Procedure: Fig. Shows a simplification ... machine detects an open circuit on that loop and then drops the connections through the switch.  

Description : Using a combination of uniselectors and two motion selectors, draw a schematic of thousand line exchange and explain its working.

Last Answer : The schematic diagram for such an exchange is given in Fig. Each subscriber is connected to a single rotary pre-selector switch at the exchange, the outputs from  this switch being ... further digits, connection is established, providing the called subscriber's to answer his telephone.  

Description : Engaged tone is generated in the: (A) Telephone instrument of calling subscriber (B) Telephone instrument of called subscriber (C) Exchange (D) Repeater

Last Answer : (C) Exchange

Description : A star connected intermediate exchange is known as a (A) Repeater exchange (B) Hub exchange (C) Private branch exchange (D) Tandem exchange

Last Answer : (B) Hub exchange

Description : Classify data networks. Explain with the help of Nyquist theorem, the data rate limitations in PSTN’s. Give an account of modems used in data transfer. Explain their importance and list some of the V-series recommendations.

Last Answer : Classifications of Data Network:  Data Networks are classified according to their geographical coverage: Wide area networks (WANs) Metropolitan area networks(MANs) Local area ...  V.53 Limits for the maintenance of telephone type circuits used for data transmission. 

Description : Discuss different Routing plan adopted in a Telephone network.

Last Answer : Hierarchical networks are capable of handing heavy traffic where required, and at the same time use minimal number of trunk groups. Three methods are used for deciding on the route for a ... selection methods can be implemented. Computer based routing is a standard feature in data networks.  

Description : Find the total number of link L having five entities? Explain differences between folded and non-folded network.

Last Answer : Folded network: When all the inlets/outlets are connected to the subscriber lines, the logical connection appears as shown in Fig. In this case, the output lines are folded back to the input ... non-folded network to be non-blocking, the network should support N simultaneous switching paths.  

Description : What are the major systems of a telecommunication network? Discuss in detail the subscriber loop systems.

Last Answer : The major systems of any telecommunication network may consist of the following major systems: 1. Subscriber end instruments or equipments 2. Subscriber loop systems 3. Switching ... exchange. The subscriber cable pairs emanating from the exchange are also terminated on the MDF.  

Description : A two stage non-blocking network requires twice the number of switching elements as the single stage non-blocking network. (A) TRUE (B) FALSE

Last Answer : Ans: (A)

Description : An important terminal that is required between DTE and PSTN is (A) Server (B) MODEM (C) Relay (D) Network card

Last Answer : (B) MODEM

Description : In a single stage network: (A) There is no redundancy (B) There is redundancy (C) Alternative cross points are available (D) Alternative paths are available

Last Answer : (B) There is redundancy

Description : The function of ARQ in a network protocol is to: (A) Auto request (B) Acknowledge (C) Address request (D) Abort

Last Answer : (A) Auto request

Description : In step by step switching line finders are connected to the (A) Calling subscriber. (B) Switching network. (C) Called subscriber. (D) Between exchanges.

Last Answer : (A) Calling subscriber.

Description : Network Layer is used for (A) Breaking up the data in frames for transmission (B) Deal with Error correction (C) Automatic Recovery of Procedure (D) Physical Architecture

Last Answer : (D) Physical Architecture

Description : For two stage network the switching elements for M inlets with r blocks and N outlets with s blocks is given by (A) Ms + Nr (B) Mr + Ns (C) (M + N) (r + s) (D) (M + N)rs

Last Answer : (A) Ms + Nr

Description : The final selector is connected to the (A) calling subscriber. (B) switching network. (C) called subscriber. (D) line finder.

Last Answer : (C) called subscriber

Description : In a LAN network every system is identified by (A) Name (B) MAC address (C) IP Address (D) Serial number given by manufacturer

Last Answer : (C) IP Address

Description : The ________is a circuit-switched network, while the ______is a packet-switched network. (A) Telephone, ATM (B) SONET and FDDI (C) Satellite, Telephone (D) FDDI and SONET

Last Answer : (A) Telephone, ATM

Description : A large numbers of computers in a wide geographical area can be efficiently connected using (A) twisted pair lines (B) coaxial cables (C) Communication satellites (D) all of the above

Last Answer : (D) all of the above

Description : MAC is the abbreviation for: (A) Multimedia access control (B) Media access control (C) Mobile access control (D) Master access point control

Last Answer : (B) Media access control

Description : MAC address helps in (A) multimedia access control. (B) media access control. (C) mobile access control. (D) master access point control

Last Answer : (B) media access control.

Description : Theprotocol that isused for signaling in the telephone network is called ______. A) POP B) SSS C) SS7 D) none of the above

Last Answer : SS7

Description : Concept of PCS/PCN is based on _________ a) Advanced intelligent network b) Artificial intelligent network c) CDPD d) SS7

Last Answer : a) Advanced intelligent network

Description : What do you mean by numbering and addressing? Draw the ISDN address structure and explain how the addressing works?

Last Answer :  Numbering and Addressing: In telephone and data networks, the end equipments are more often single units than multiple devices units like PABX or LAN. Historically, a telephone, a computer, or a ... as reference point may also be addressed by using direct inward dialing (DID) feature.  

Description : Draw a centralized SPC organization and explain how it works under load sharing operation.

Last Answer : In centralized control, all the control equipment is replaced by a single processor which must be quite powerful. It must be capable of processing 10 to 100 calls per second, depending on the ... both the processors are active simultaneously and share the load and the resources dynamically.  

Description : Explain FDM and show how CCITT standards help in building the base band?

Last Answer : Frequency Division Multiplexing: It is the process of combining several information channels by shifting their signals to different frequency groups within the spectrum so that they can be transmitted simultaneously ... of 24 channels were assembled together in one stage of modulation.     

Description : What are transmission bridges? How do they help in satisfying the connectivity?

Last Answer : A typical transmission bridge is shown in Fig. The series capacitance and the shunt inductances of the two relays provide a high-pass filter to transmit the AC speech signals, while the relays respond independently to the DC loop/disconnect signals from the calling and called customer.