3 Definitions and abbreviations

03.663GPPStage 2Support of GSM Mobile Number Portability (MNP)TS

3.1 Definitions

For the purposes of the present document, the following terms and definitions apply:

donor network: the subscription network from which a number is ported in the porting process. This may or may not be the number range holder network

interrogating network entity: the entity that submits a non-call related signalling message to interrogate the HLR

interrogating network: the network in which the interrogating network entity resides

mobile number portability: the ability for a mobile subscriber to change GSM subscription network within the same country whilst retaining their original MSISDN(s)

network operator: a GSM PLMN operator

non-call related signalling message: all signalling messages where the MSISDN is used to route the message on SCCP level except MAP SRI without OR parameter set (i.e. SRI_SMS, SRI for SOR, Send_IMSI, CCBS_Request etc)

number portability database: an Operational database (used in real time at call set-up) which provides portability information

number portability location register: an internal MAP application terminating function (MATF) in the MNP-SRF network entity with an (unspecified) interface with a NPDB

number range holder network: the network to which the number range containing the ported number has been allocated

originating network: the network where the calling party is located

portability domain: a set of GSM PLMNs in a country between which MSISDNs may be ported

portable number: an E.164 number that can be ported between networks in one nation

ported number: a portable number that has undergone the porting process

ported subscriber: the subscriber of a ported number

porting process: a description of the transfer of a number between network operators

recipient network: the network which receives the number in the porting process. This network becomes the subscription network when the porting process is complete

routeing number: the routeing number is the data stored against the ported number in the Number Portability Database

service key: the Service Key can identify to the entity holding the Number Portability Database that the service logic for Mobile Number Portability should apply. The Service Key value for Mobile Number Portability is administered in the MSC, and is passed transparently to the entity holding the Number Portability Database

service provider: an entity which offers service subscriptions to individual subscribers and contracts with a network operator to implement services for a specific MSISDN. A service provider may contract with more than one network operator

service provider portability: the transfer of numbers between two unique Service Providers

subscription network: the network with which the customer’s Service Provider has a contract to implement the customer’s services for a specific MSISDN

NOTE: The term "recipient network" is used during the porting process. The recipient network becomes the "subscription network" after completion of the porting process.

3.2 Abbreviations

Abbreviations used in the present document are listed in GSMĀ 01.04 ([1]).

For the purposes of the present document, the following abbreviations apply:

GMSC Gateway MSC


HLR Home Location Register

HPLMNB The subscription network of the B subscriber

IDP Initial Detection Point

IE Information Element

IF Information Flow

INE Interrogating Network Entity

IPLMN Interrogating PLMN

MATF MAP application Terminating Function

MNP Mobile Number Portability

MNP-SRF Signalling Relay Function for support of MNP

MSA Mobile Station of the A subscriber

MSB Mobile Station of the B subscriber

MSC Mobile service Switching Centre

NPDB Number Portability Database

NPLMN The number range holder network of the B subscriber

NPLR Number Portability Location Register

OQoD Originating call Query on Digit Analysis

PLMN Public Land Mobile Network

QoHR Query on HLR Release

RN Routing Number

SMS Short Message Service

SOR Support of Optimal Routeing

SRI Send Routeing Information

TQoD Terminating call Query on Digit Analysis

TT Translation Type

VMSC The Visited MSC

VMSCB The VMSC of the B subscriber

Further GSM related abbreviations are given in GSM 01.04.