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Number portability

A Seminar on. Number portability. Contents :. Introduction Background Types of number portability LNP Architecture LNP process flow Call flow Number pooling Conclusion. Introduction .

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Number portability

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  1. A Seminar on Number portability

  2. Contents : • Introduction • Background • Types of number portability • LNP Architecture • LNP process flow • Call flow • Number pooling • Conclusion

  3. Introduction Number portability is a circuit-switch telecommunications network feature that enables end users to retain their telephone numbers when changing service providers, service types, and/or locations.

  4. Background • The Telecommunications Act of 1996 (TA 96) • To ensure standardization across platforms • Local Number Portability Working Group (LNPA-WG) 1.determine operational processes 2.develop and implement a deployment strategy • Wireless Number Portability subcommittee

  5. Types of Number Portability • Service provider portability • Location Portability • Service Portability

  6. Local Number Portability (LNP) Architecture and Processes Network Elements • Service order administration (SOA) • Number portability administration center (NPAC) • Local service management system (LSMS) • Service control point management system (SCP MS) • Number portability database (NPDB) • Signal transfer point (STP) • Service switching point/mobile switch center (SSP/MSC)

  7. Service Order Administration (SOA) SOA provides the functionality to interface to carriers and provisioning systems in order to update the NPAC • primary functions • Subscription audit • Request/management • Data administration • Data transfer to the NPAC • Report generation • Bulk-file parse and upload • Subscription tracking • Legacy order entry interface and logging.

  8. Number Portability Administration Center (NPAC) (NPAC), is database is designed to receive information from both the incumbent and new service providers, validate the information received, and download the new routing information • NPAC provides : • New service provider’s ID • Location routing number (LRN) • Routing data • Line information database (LIDB) • Calling name delivery (CNAM) • Additional info.

  9. Functions : • Management • Administration • Oversight, and integration of NPAC operations • Hardware and software development • Maintenance related functions • Record of all ported numbers • History file of all transactions

  10. Local Service Management System (LSMS) Is a fault-tolerant hardware and software platform that contains the database of information required to enable routing and call completion • Functions of LSMS : • subscription management • network data management • service provider data management • error processing and notification • transaction event logging and reporting • transmission of activation/deactivation events

  11. Number Portability Database (NPDB) The NPDB provides the LNP association between the called party and the carrier LRN, identifying the switch to which the call should be routed. • Contains : • LRN for a particular directory number. • line information database (LIDB) • calling name delivery (CNAM) • custom local area signaling services(CLASS) • 10-digit global title translation (GTT)

  12. Service Control Point Management System (SCP MS) The service control point management system provides interface services between the LSMS and the SCP. The SCP MS may or may not be physically integrated with the SCP. Signal Transfer Point (STP) : The signal transfer point receives the LRN query from the SSP/MSC and routes the query to the appropriate LNP SCP. The STP returns the SCP response to the SSP/MSC.

  13. Service Switching Point/Mobile Switch Center (SSP/MSC) The exchange carrier owns and operates the service switching point/mobile switch center. Service switching points must be able to generate an LNP query to the SCP (via the STP network) when a call is placed to a telephone number in a ported domain.

  14. Number porting process flow : • Customer’s authorization/request • NPAC notification by SOAs • Validation Checks • Service provider notification • Number porting • Number activation • NPAC broadcast

  15. Call procedure/flow : Dialing a number If number is ported then NPDB query LRN response Routing path is defined Call handover Call connects

  16. Number pooling : Number pooling is defined as the ability to share an NPA-NXX among several facilities-based carriers within the same rate center. The concept of pooling is based on the fact that whole blocks of telephone numbers, held by some service providers, are not assigned or in service. Pooling allows these currently unassigned blocks of numbers to be reassigned to other service providers in need of numbers, as they request and show need.

  17. Conclusion : • Number portability removes the most important • barrier to increased competition in the • telecommunications sector. • Freedom of choice for customers

  18. THANK YOU

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