The present document describes several alternatives for the realisation of Mobile Number Portability.
The present document includes information applicable to network operators, service providers, switch and database manufacturers and national regulators.
It is left to operator and implementation decisions which option, or combination of options, is used, taking into account the regulatory and architectural constraints that may prevail. The possible implications of these options on internal node functions and on signalling performance are not covered in the present document.
Normative Annex A of the present document describes the technical realisation of the handling of calls to ported UMTS or GSM mobile subscribers using IN technology.
Normative Annex C of the present document describes the technical realisation of the handling of calls to ported UMTS or GSM mobile subscribers using Signalling Relay technology.
Normative Annex A and Normative Annex C describe alternative solutions. The network operator may choose the solution to be used in his network.
Normative Annex B of the present document describes the technical realisation of the handling of non-call related SCCP signalling for ported UMTS or GSM mobile subscribers using Signalling Relay technology.
The present document does not specify the porting process.
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
For a specific reference, subsequent revisions do not apply.
For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
ETSI ETS 300 009 (1991): "Integrated Services Digital Network (ISDN); CCITT Signalling System No. 7 - Signalling Connection Control Part (SCCP) [connectionless services] to support international interconnection".
ETSI EN 300 356-2 V4.1: "Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 4 for the international interface; Part 2: ISDN supplementary services [ITU-T Recommendation Q.730 modified]".
ANSI T1.112-1996: American National Standards for Telecommunication - Signalling System No. 7 (SS7) Signalling Connection Control Part (SCCP). Note: Translation Types 10 and 14 will be published in the next revision of ANSI T1.112.
North American Numbering Council (NANC) Functional Requirement Specification: Number Portability Administration Center - Service Management System (NPAC-SMS), Version 1.0, May 25, 1995; Version 2.0, June 2, 1997.
For the purposes of the present document, the following terms and definitions apply.
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
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.
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
network where the calling party is located
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
a PLMN or ,in North America, a PSTN or an ISDN network
E.164 number that can be ported between networks in one nation
portable number that has undergone the porting process
subscriber of a ported number
description of the transfer of a number between network operators
network that receives the number in the porting process. This network becomes the subscription network when the porting process is complete
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 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
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
network with which the customer's Service Provider has a contract to implement the customer's services for a specific MSISDN