TS 23.003 — Numbering, addressing and identification⚓︎
Release: Rel 15 · Version assessed: 15.3.0 · Network: 4G · Applies to: MME
Mandatory items: 25, of which 25 supported. A further 308 clauses of the specification carry no conformance requirement and are not listed.
Mandatory items⚓︎
| Ref. | Item | Status | Support | Remarks |
|---|---|---|---|---|
| 2.2 | Composition of IMSI | Mandatory | Supported | |
| 2.8 | Globally Unique Temporary UE Identity (GUTI) | Mandatory | Supported | |
| 2.8.1 | Introduction | Mandatory | Supported | |
| 2.9 | Structure of the S-Temporary Mobile Subscriber Identity (S-TMSI) | Mandatory | Supported | |
| 6.1 | General | Mandatory | Supported | |
| 6.2 | Composition of IMEI and IMEISV | Mandatory | Supported | |
| 6.2.1 | Composition of IMEI | Mandatory | Supported | |
| 9.0 | Definition of Access Point Name | Mandatory | Supported | |
| 9.0 | General | Mandatory | Supported | |
| 9.1 | Structure of APN | Mandatory | Supported | |
| 9.1.1 | Format of APN Network Identifier | Mandatory | Supported | |
| 9.1.2 | Format of APN Operator Identifier | Mandatory | Supported | |
| 9.2 | Definition of the Wild Card APN | Mandatory | Supported | |
| 9.2.1 | Coding of the Wild Card APN | Mandatory | Supported | |
| 19.2 | Home Network Realm/Domain | Mandatory | Supported | |
| 19.4 | Identifiers for Domain Name System procedures | Mandatory | Supported | |
| 19.4.1 | Introduction | Mandatory | Supported | |
| 19.4.2 | Fully Qualified Domain Names (FQDNs) | Mandatory | Supported | |
| 19.4.2.1 | General | Mandatory | Supported | |
| 19.4.2.2 | Access Point Name FQDN (APN-FQDN) | Mandatory | Supported | |
| 19.4.2.2.1 | Structure | Mandatory | Supported | |
| 19.4.2.3 | Tracking Area Identity (TAI) | Mandatory | Supported | |
| 19.4.2.4 | Mobility Management Entity (MME) | Mandatory | Supported | |
| 19.4.2.8 | DNS sub domain for operator usage in EPC | Mandatory | Supported | |
| 19.6 | E-UTRAN Cell Identity (ECI) and E-UTRAN Cell Global Identification (ECGI) | Mandatory | Supported |
Optional items⚓︎
The specification leaves these 12 items to the implementation; 10 are supported or partially supported. An item marked Not applicable belongs to an area the platform does not provide, named in the Support column. Expand for the full list.
12 optional items
| Ref. | Item | Support | Remarks |
|---|---|---|---|
| 2.8.2.0 | Introduction | Supported | |
| 2.8.2.1 | Mapping from GUTI to RAI, P-TMSI and P-TMSI signature | Supported | |
| 2.8.2.2.3 | Mapping in the new MME | Supported | |
| 3.3 | Structure of MS international PSTN/ISDN number (MSISDN) | Supported | |
| 3.7 | Structure of an IP v4 address | Supported | |
| 3.8 | Structure of an IP v6 address | Supported | |
| 4.7 | Closed Subscriber Group | Supported | |
| 9.3 | Definition of Emergency APN | Supported | |
| 19.4.2.5 | Routing Area Identity (RAI) - EPC | Not supported | |
| 19.4.2.7 | Target RNC-ID for U-TRAN | Supported | The RNC part is not used; the DNS query is based on the PLMN only (epc.mnc |
| 19.4.3 | Service and Protocol service names for 3GPP | Not supported | |
| B.1 | Representation of IMEI | Supported |
Assessed 2026-09-15 against TS 23.003 version 15.3.0.