Course ID: - 50263182 & 50263183 Course Name: - Switching and Signaling

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TUTORIAL

Employee Name: - __________________________ Date: - __________ Employee Code: - ______________ Trainer: - __________ Validated By: - __________________ Date: - _________ Instructions This tutorial is designed to inculcate thought process as why we have a network like the present one. It is implicit that some of the subject material may not even be covered in your switching and signaling session; this is because in practical life you will face a scenario that is strange to you. So take help of Internet, intranet or any other reference to answer those questions.

Try to give logical answers to the questions. You have to prepare the answers during your module time. You may exclusively be given half a day for such preparations. You must be prepared to explain or present the answers to other participants during discussion.

1. Imagine that Reliance has added two new switches in their network. Both the switches are in big cities. Nearest POI to BSNL network is in another city. It is needed to connect newly added switches to the network. Assume traffic generated per subscriber is 40mE. How will you plan for its connectivity? Appropriately justify any of your assumption taken in this process.

2. Now a day technology has so advance that we may code human speech in lesser bits than the existing bit rate. What stops us in using any such coding technique universally?

3. DSL is sort of a modem, used to access Internet or any high-speed application data using same pair of telephone line. Find out its variants available in market. To support DSL connectivity, does an operator need any extra setup?

4. Make a high level V5.2 call states. Reliance network is using access product from Utstarcom & Ericsson’s AXE10 as switch. They are connected over V5.2.

5. Assuming tomorrow our network will be migrated to an all IP network from circuit switch network. What changes do you think must be done in network elements & terminals to support it? Do you think a user is benefited in this exercise?

Course ID: - 50263182 & 50263183 Course Name: - Switching and Signaling

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TUTORIAL

6. We all know that subscriber has a unique number to route its call. Reliance is using 93 series for RIM and maximum digits in subscriber number could be 10. This 93 series will be used throughout the country for RIM number. Is there any basis for further allocation of number series to a particular geography? You may use our intranet portal to get the numbering plan of Reliance.

7. An operator will optimized its equipment cost by providing multiple services through a single node. In another words, we may use an ILT switch for RIM business and add more network functions e.g. STP, SSP etc on it. It appears that we are using same physical network to realize multiple logical networks. What in your view could be the reason to have logical boundaries?

8. An ILT switch is used to connect fixed line users & RIM subscribers. A corporate customer demanded a Centrex facility to connect its offices across the country. A Centrex fixed line subscriber at Mumbai makes a call to a pre-paid Delhi RIM subscriber, currently at Mumbai. Which protocols will be used to establish the connection?

9. Make a comparison between various switching systems, available from various vendors, based on their architecture. Use Internet resources for the same.

10. Lets assume that today we have a requirement to increase the capacity of a switch. What could be probable factors for this cause? Which factors must be taken into account during capacity increase?

11. What makes it possible to monitor switches in a network to be monitored from a single point? Please note that, in a network we may find switches from many vendors.

12. What type of backbone network is needed to simultaneously carry speech, data, streaming video etc? Which protocols are needed at the switch? Do we need any other elements in our SDH network for the same?

13. Think of a scenario that one of the ILT switch is overloaded. At this juncture, who will come to know it first? Do we really need to do anything, as cause of overloading is something beyond an exchange control! What in your logic should be done?

14. Today our network carry user data meant for our own customer. Tomorrow, if we were allowed to carry some others user data through our network, which subsystems in our network, will be affected by this phenomena.