PRESENTED BY:
S.Reshma Banu
T.Swetha

---

[attachment=10042]
ABSTRACT :
Mobile number portability allows a mobile subscriber to switch operators without changing his/her telephone number. This paper describes and analyzes mobile number portability routing mechanisms and their implementation costs. Cost recovery issues for number portability are discussed in this paper from a technical perspective. We note that rules for cost recovery also depend on business and regulatory factors that vary from country to country.
This paper examines the consequences of introducing mobile number portability (MNP). If the sole effect of introducing MNP is the abolishment of switching costs, MNP unambiguously benefits mobile customers. However, if MNP also causes consumer ignorance, as telephone numbers no longer identify networks; mobile operators will increase termination charges, with ambiguous net effect on the surplus of mobile customers.
Mobile number portability (MNP) requires that mobile telephone customers can keep their telephone number–including the prefix–when switching from one provider of mobile Tele communications services to another. In the absence of MNP, customers have to give up their number and must adopt a new one when they switch operators. As a result, customers face switching costs associated with informing people about changing their number, printing new business cards, missing valuable calls from people that do not have the new number, etc. Based on these considerations, many regulatory authorities have imposed mandatory MNP–or are about to require its introduction–so as to reduce customers’ switching costs, attempting to make mobile telecommunications more competitive The world’s first country to introduce MNP was Singapore in 1997.
This paper introduces the concept of number portability, explains its different types and benefits, and the technical, operational, and economic issues that might arise out of its implementation in India. The specific issues such as ensuring tariff transparency, the National Numbering Plan, and regulating porting charges, etc. have been raised and will need careful consideration.
INTRODUCTION:
Number Portability will allow subscribers to change their service provider while retaining their old mobile number. Portability benefits subscribers and increases the level of competition between service providers, rewarding service providers with the best customer service, network coverage, and service quality.
Number Portability: Definition
Number portability is a telecommunications network feature that enables end users to retain their telephone numbers when changing service providers, service types, and/or locations
Types
There are three basic types of number portability-
• Service operator Portability
• Location Portability
• Service Portability
7 Basic components required to deploy MNP
 Service Order Administration
 Number Portability Administration Center
 Service Control Point Management Server
 Local Service Management System
 Signal Transfer Point
 Service Switching Point
 Service Control Point
Service Order Administration (SOA)
 Serves as an interface element between carriers' order and provisioning systems and the Number Portability Administration Center (NPAC).
 SOA's primary functions include subscription audit request or management, data administration, data transfer to the NPAC, report generation, bulk file parse and upload, subscription tracking, legacy order entry interface, and logging.
Number Portability Administration Center (NPAC)
 Number Portability Administration Center (NPAC) is a third-party, neutral database administration function that supports number portability.
 This database is designed to receive information from both incumbent and new service providers, validate that info. and download the new routing information when a customer has been physically connected to the new service provider's network.
Service Control Point Management System (SCP MS)
o The Service Control Point Management System (SCP MS) provides interface services
between the LSMS and the SCP
o The SCP MS may or may not be physically integrated with the SCP.
Local Service Management System
 The Local Service Management System (LSMS) is a fault-tolerant hardware and software platform that contains database with routing information to ported telephone numbers.
 The primary functions of the LSMS are subscription management, network data management, service provider data management, error processing and notification, transaction event logging and reporting, transmission of activation/deactivation events to the network elements, and audits.
Number Portability Database
The Number Portability Database (NPDB) contains all ported numbers within a ported domain as well as routing info. necessary to support number portability. Its function is to provide the association between the called party and the carrier LRN, identifying the switch to which the call should be routed.
Signal Transfer Point (STP)
 The Signal Transfer Point (STP) receives the LRN query from the SSP/MSC, routes it to the appropriate NPDB, and returns a response to the originating SSP/MSC.)
 The basic core functionality of the STP as a network message router has not been impacted.
Service Switching Point or Mobile Switch Center
 The Service Switching Point/Mobile Switch Center (SSP/MSC) is owned and
operated by the exchange carrier.
 These switch points must be able to generate a LNP query to the NPDB when a call is placed to a telephone number in a ported domain.
 A ported domain here is defined as a Metropolitan Statistical Area (MSA) that has implemented number portability