3 Definitions and abbreviations

23.0663GPPRelease 17Stage 2Support of Mobile Number Portability (MNP)Technical realizationTS

3.1 Definitions

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

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

interrogating network: network in which the interrogating network entity resides

mobile number portability: ability for a mobile subscriber to change mobile network subscription within the same country whilst retaining his/her original MSISDN(s). Additional regulatory constraints apply in North America.

mobile number portability information: an information set relevant to Mobile Number Portability for a mobile subscriber. It may contain one or more of Routeing Number, generic IMSI MSISDN,and Number Portability Status.

network operator: 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)

North American GSM Number portability: the ability for a subscriber to change subscription between North American GSM networks and other subscription networks within a regulated geographical area within North America.

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

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

number portability status: information indicating the status of number portability for a mobile subscriber. It may be one of: own number ported out, own number not ported out, foreign number ported in, foreign number ported to a foreign network, foreign number not known to be ported

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

originating network: network where the calling party is located

portability domain: set of GSM PLMNs in a country between which MSISDNs may be ported or a set of North American GSM Mobile networks and other subscription networks within a regulated geographical area within North America

portability network: a PLMN or ,in North America, a PSTN or an ISDN network

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

ported number: portable number that has undergone the porting process

ported subscriber: subscriber of a ported number

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

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

routeing number: routeing number is the data stored against the ported number or the non-ported number in the Number Portability Database. The routeing number points to Subscription Network or Recipient Network

service key: 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: entity that 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: transfer of numbers between two unique Service Providers

subscription network: 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 the completion of the porting process.

3.2 Abbreviations

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

CCBS Call Completion on Busy Subscriber

CCF Call Completion Function

CdPA Called Party Address

CgPA Calling Party Address

CNAP Calling Name Presentation

CNDB Calling Name Database

CRMNP Call Related Mobile Number Portability

FCI Forward Call Indicator

GAP Generic Address Parameter

GMSC Gateway MSC


GTT Global Title Translation

HLR Home Location Register

HPLMNB The subscription network of the B subscriber

IAM Initial Address Message

IDP Initial Detection Point

IE Information Element

INE Interrogating Network Entity

IF Information Flow

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-services Switching Centre

MSISDN Mobile Station International ISDN Number

MSRN Mobile Station Roaming Number

NANP North American Numbering Plan

NAGNP North American GSM Number Portability

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 Routeing Number

SMS Short Message Service

SOR Support of Optimal Routeing

SRI Send Routeing Information

STP Signalling Transfer Point

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 3GPP TS 21.905: "3G Vocabulary".