1. What Is Msrn? In Which Type Of Call It

Questions

1. What is MSRN? In which type of call it is been used? The Mobile Station Roaming Number is an E.164 defined telephone number used to route telephone calls in a mobile network from a GMSC (Gateway Mobile Switching Centre) to the target MSC . The Mobile Station Roaming Number is an E.164 defined telephone number used to route telephone calls in a mobile network from a GMSC (Gateway Mobile Switching Centre) to the target MSC (see Network Switching Subsystem). It can also be defined as a directory number temporarily assigned to a mobile for a mobile terminated call. A MSRN is assigned for every mobile terminated call, not only the calls where the terminating MS lives on a different MSC than the originating MS. 2. What are the functionalities in the MSC/MSC-S node? Explain the clearly the call setup procedure for a call between: a) Tigo to Tigo. b) Tigo to any other local operator. 3. What are triplets? 4. What are the functionalities available in HLR? Giving the command HGSDP(see ALEX) briefly explain the function of each: a) PERMANENT SUBSCRIBER DATA b) SUPPLEMENTARY SERVICE DATA c) LOCATION DATA d) PACKET DATA PROTOCOL CONTEXT DATA 5. Which board enables the C7ST2C (Signaling Terminals)? Issuing the command C7STP(see ALEX) briefly state the meaning and functions of ST, ITYPE, RP, EM, LS, SPID, SLC, NP 6. What are the boards that can be used both in MSC and BSCs? 7. What is the capacity of STM-1 in terms of E1s? What does the term 2Mb/s means? Prepare one full DT to add 20 E1s from DAMSC02 route towards International link via Zantel (Use CIC and E1 numbers as a continuation from the existing ones.) 8. What is the maximum possible number of signaling links in C7? 9. What is the functionality of OMS? Referring our current Tigo setup, where do we have OMS nodes and for what purpose are they being used?

10. In MSC/MSC-S Differentiate between the functionalities of CP and APG? 11. What interface is used to connect APG to CP? 12. What are the different types of CPUs used in our network? What are different types of APGs used in our network? 13. Which board does the Transcoder function at BSC? Prepare one DT to add a new site ‘Tangani’ with the following details: • Cell name is TNG052 (3 sectors, GSM900) • CGI=640-02-27-1202, • BSIC=51, • BCCHNO=11, • AGBLK=1, • MFRMS=8, • BCCHTYPE=NCOMB, • FNOFFSET=0 • MEASUREMENT FREQUENCIES 8&&19 • No neighboring sites and uses all other data from existing TNG002A. 14. Explain with diagram how the SMS terminating works? 15. Describe the design of MGW (suggested to pay a visit with a book on hand and see the node physically to fully get the picture). What are the different functionalities supported by MGW? 16. In MGWs which Board has 4 STM-1s? 17. Which boards in MGWs can support TDM? 18. Which boards in MGWs can support STM? 19. Which Boards in MGWs Can Support IP? 20. Which boards in MGWs provides DTMF/ECHO/Multiparty?