scope:

The present document defines the mobility management of interworking at the Inter-System Interface (ISI) for Terrestrial Trunked Radio (TETRA) system supporting Voice plus Data (V+D).

The TETRA V+D Inter-working - basic operation part defines the Inter-System Interface (ISI) between the SwMIs as specified in the following sub-parts:

 • Transport layer independent, General design [i.5].

 • General design, PSS1 over E.1 [13].

 • General design, SIP/IP [i.6].

 • Transport layer independent Additional Network Feature Individual Call (ANF-ISIIC) [9].

 • Transport layer independent Additional Network Feature Group Call (ANF-ISIGC) [10].

 • Transport layer independent Additional Network Feature Short Data Service (ANF-ISISDS) [i.2].

 • Transport layer independent Additional Network Feature, Mobility Management (ANF-ISIMM) (the present document).

 • Generic Speech Format Implementation [i.4].

NOTE: These TSs are produced in analogy with Recommendation ITU-T I.130 [4].

The present document contains the ANF-ISIMM part. The ANF-ISIMM part defines additional Mobility Management (MM) services to the SwMIs. If supported, the ANF-ISIMM services complement the intra-SwMI-MM, authentication and key management services. In support of these, the ANF-ISIMM enables the invocation and operation of these services between the SwMIs over the ISI. Thus, ANF-ISIMM offers the following services:

 • Migration and restricted migration.

 • Individual subscriber and group profile update.

 • Supplementary Service profile update.

 • De-registration.

 • Group attachment/detachment.

 • Linked group attachment/detachment.

 • Individual subscriber and group database recovery.

 • Authentication, one-directionally or mutually between the individual subscriber and the home SwMI.

 • Over-The-Air-Re-keying (OTAR) for Static Cipher Key (SCK) generation and SCK delivery.

For the following service are only included in the stage 1 descriptions:

 • Group Linking/unlinking.

 • GTSI attachment/detachment to a linking participating group from another SwMI.