Content for TS 23.078 Word version: 19.0.0

1… 4.2… 4.3… 4.4… 4.5… 4.5.2… 4.5.3… 4.5.4… 4.5.5… 4.5.6… 4.5.7… 4.5.8… 4.6… 4.6.2… 4.6.3… 4.6.7… 4.6.13… 5… 6… 6.5… 6.6… 7… 7.5… 8… 9… 10… 11… 12… A…

12.1 Architecture 12.2 Procedures for CAMEL 12.3 Description of information flows 12.3.1 gsmSCF to MNP SRF information flows 12.3.2 MNP SRF to gsmSCF information flows

12 Subscriber Mobile Number Portability status retrieval |R5| p. 739

Support of the procedures described in this clause in CAMEL Phase 4 is a network operator option.

12.1 Architecture p. 739

12.1.1 Functional Entities used for CAMEL p. 739

This clause describes procedures for the retrieval of subscriber Mobile Number Portability (MNP) information.

The gsmSCF may request subscriber MNP information of a mobile station from the MNP Signalling Relay Function (MNP SRF).

Figure 12.1 indicates the functional entities involved in the procedures for the retrieval of MNP information.

Copy of original 3GPP image for 3GPP TS 23.078, Fig. 12.1: Functional architecture for CAMEL Support of providing MNP information

Figure 12.1: Functional architecture for CAMEL Support of providing MNP information
(⇒ copy of original 3GPP image)

gsmSCF:

see subclause 3.1.

MNP SRF:

A functional entity that supports the mobile number portability of a mobile station, which is described in TS 23.066.

Recipient Network:

Network that receives the number in the porting process. This network becomes the subscription network when the porting process is complete. See TS 23.066.

Number Range Holder Network:

Network to which the number range containing the ported number has been allocated. See TS 23.066.

12.1.2 Interfaces defined for CAMEL p. 740

This subclause describes the interfaces applicable to CAMEL. It specifies on a high level the functions specific to CAMEL.

12.1.2.1 gsmSCF - MNP SRF interface p. 740

This interface is used by the gsmSCF to request MNP information from the MNP SRF at any time.

12.1.2.2 MNP SRF - gsmSCF interface p. 740

This interface is used by the MNP SRF to return the requested MNP information to the gsmSCF, as requested by the gsmSCF via the Any Time Interrogation procedure.

12.2 Procedures for CAMEL p. 740

12.2.1 Provide MNP Information p. 740

12.2.1.1 CAMEL_Provide_MNP_Info with ATI p. 740

The process for providing MNP information with Any Time Interrogation (ATI) is the following:

CAMEL_ATI_MNP.

Sheet 1:

Details of the task box "Query Number Portability Database" may be obtained from TS 23.066. The task box returns an indication whether the MSISDN is known or not.

Figure 12.2-1: Process CAMEL_ATI_MNP (sheet 1)
(⇒ copy of original 3GPP image)

12.3 Description of information flows p. 742

This subclause contains the detailed description of the information flows used by CAMEL for the retrieval of MNP information about a subscriber.

Each Information Element (IE) is marked as Mandatory (M), Conditional (C), Specific conditions (S), mutually Exclusive (E) or not applicable (-).

An 'M' IE shall always be included. A 'C' IE shall be included if the sending entity has the necessary information to populate the IE. The conditions for the inclusion of an 'S' IE are shown in the 'Description' column of the definition table. When a set of 'E' IEs is shown in the definition of an Information Flow or compound IE, only one of those IEs may be included. A '-' IE shall always be omitted. This categorization is a functional classification, i.e. it defines the requirements for the stage 2 information. It is not a stage 3 classification to be used for the ASN.1 syntax of the protocol.

The following principles apply for the handling of the IEs by the receiving entity:

The gsmSCF may silently discard any IE which it does not functionally support.
The MNP SRF shall return an error if it does not functionally support an IE which it receives.

Details of errors and exceptions to these rules are specified in TS 29.002.

12.3.1 gsmSCF to MNP SRF information flows p. 742

12.3.1.1 Any Time Interrogation Request p. 742

12.3.1.1.1 Description p. 742

This IF is used by the gsmSCF to request the MNP information for subscribers from the MNP SRF at any time.

12.3.1.1.2 Information Elements p. 742

Information element name	Status	Description
gsmSCF Address	M	This IE indicates the address of the interrogating gsmSCF. The gsmSCF Address shall be in international E.164 format.
Requested Info	M	This IE indicates the type of subscriber information that is requested. It shall have the following value: MNP Requested Info.
Subscriber Identity	M	This IE identifies the subscriber for which the information is requested. The identity shall be: MSISDN.

12.3.2 MNP SRF to gsmSCF information flows p. 742

12.3.2.1 Any Time Interrogation ack p. 742

12.3.2.1.1 Description p. 742

This IF is used by the MNP SRF to provide the requested MNP information for the subscriber to the gsmSCF.

12.3.2.1.2 Information Elements p. 742

Information element name	Status	Description
MNP Information Result	M	This IE contains the MNP information for the subscriber. It is described in a Table below.

MNP Information Result contains the following information:

Information element name	Status	Description
Routeing Number	C	This IE shall be present, if requested by the gsmSCF. Refer to TS 23.066.
IMSI	C	This IE shall be present, if requested by the gsmSCF. Refer to TS 23.066.
MSISDN	C	This IE shall be present, if requested by the gsmSCF. Refer to TS 23.066.
Number Portability Status	C	This IE shall be present, if requested by the gsmSCF. It may have one of the following values: Not Known To Be Ported; Own Number PortedOut; Foreign Number Ported To Foreign Network; Own Number Not Ported Out; Foreign Number Ported In. Refer to TS 23.066.