A Dutch police officer currently located in Germany is witnessing a traffic accident involving a Dutch truck. The Dutch MC UE is equipped with a roaming SIM card, is registered in a public German EPS/5GS, which allows the Dutch police officer to use Dutch MCPTT services only and there is no affiliation to German police or emergency services talk groups granted. In order to offer support to local law enforcement the police officer contacts the Dutch command and control centre in the Dutch MCX Service System and offers assistance at the scene of the accident. The Dutch control centre contacts the German MCX Service System via the High Level Protocol and announces that a police officer with Dutch and German language skills is available at the scene of the accident and requests the ability to participate in the local police incident communications. The relevant German command and control room receives the support offer and approves the request. The Dutch police officer then receives configuration data and authorisation allowing him to affiliate to the local Police talk group in the German MCX Service System. The Dutch police officer can now communicate directly with the German police officers on site to support the accident investigation, adding a witness statement.

1. The Dutch police officer has to have a valid MCX subscription in the Dutch MCX Service System
2. There is an operational agreement between the Dutch and the German Mission Critical Organization and a link has been established between the systems that allows exchange of administrative configuration information
3. An agreement has to be in place that allows the Dutch police officer's UE to register on a public German EPS/5GS which enables initial communication with the Dutch MCX Service System authorized user(s)

1. The Dutch Police officer informs their Dutch MCX Service System's authorized user(s)
2. The authorized user(s) in the Dutch Police officers Primary MCX Service System analyses the received information and collects additional information, which need to be provided to the Partner MCX Service System
3. The authorized user(s) in the Dutch MCX Service System establishes contact via a separate administrative configuration protocol with the German MCX Service System
4. The Dutch and the German MCX Service Systems exchange the relevant administrative and security information via the separate administrative configuration protocol
5. The relevant authorized user(s) in the German MCX Service System, either automatically or manually, processes the request
6. After acceptance or successful checks/authorisations, the Dutch Police officer's user profile is updated to include the relevant information, such as user group configuration and encryption key material, assigned by the German MCX Service System
7. The Dutch police officer's UE affiliates to the German MCX Service Group via the Dutch MCX Service System and its Group communication is routed from the public German EPS/5GS through the Dutch MCX Service System to the German MCX Service System

1. The Dutch Police officer can now select and participate in the relevant German talk group(s)

The following requirements refer to TS 22.280. [R-6.17.2-004] [R-6.17.2-007]

[PR 5.1.6.1] [PR 5.1.6.2] [PR 5.1.6.3]

A train carrying passengers and cargo has derailed in the border region between Belgium, The Netherlands and Germany and collided with a freight train transporting chemicals and other flammable material. Injured persons need to be rescued, derailed carriages need to be secured, chemicals have to be neutralised or cleaned up and fires nearby any flammable material need to be controlled. The accident happened in Germany, which means the German PPDR organization carry the responsibility to deal with the incident and coordinate the rescue efforts. Calls from the public to report the incident reach the relevant Belgian, Dutch and German command and control centres. As the relevant PPDR organizations in the region have bi-lateral incidence support agreements in place, the Belgian and Dutch PPDR organizations immediately offer resources to the relevant German authorities. Administrative information is transmitted in a pre-agreed format to the relevant German command and control centre and includes capability information, such as what type of rescue equipment can be made available or what type of hazardous materials can be dealt with, as well as the MCX user IDs of the first responder able to operate the relevant equipment. The information transmitted includes an estimated time to reach the incident site. Since the accident involves trains and rail equipment, the relevant rail authorities and support groups need to be contacted and brought into the rescue efforts. In order to ensure operational safety of the first responders on-site and a quick response to on-site emergency calls, their respective MCX Service UE's emergency call communication is reconfigured to be routed to a specific mobile on-site emergency call centre. The relevant German command and control centre analyses the information received and requests the resources that are deemed necessary to support the rescue efforts. Information such as configuration data and authorizations are then transmitted back to the relevant Belgian and Dutch control centres and rail emergency command and control centre authorized user(s) to allow the relevant MCX UEs to affiliate with the relevant German MCX Service System talk groups. This allows the multi-agency rescue and first response efforts to be coordinated efficiently and ensures communication is possible with all resources involved in the incident.

All relevant Belgian and Dutch MC UEs are equipped with roaming SIM cards, which allow the MC UEs to register in the German LTE/5GS networks. Capability information is linked to an MCX user ID record and by requesting a specific capability, such as "chemical incident", "medical air lift" or "heavy equipment handling" the relevant resources can be made available by the partner organisations and MC UEs can be affiliated and linked to the relevant talk groups.

1. The Dutch and Belgian first responders have to have valid MCX subscriptions in their respective MCX Service Systems
2. MCX User capability information is available for efficient request/deployment of relevant resources
3. Connections between the relevant systems have been established that allow exchange of administrative configuration information

1. The relevant Dutch and Belgian command and control centres receive incident information from the public
2. The relevant Dutch and Belgian authorized user(s) analyse the response requirements, collect additional information which resources and capabilities are available
3. After it has been understood that the incident site is located in Germany, the authorized user(s) in the Dutch and Belgian MCX Service System establish contact via a separate administrative configuration protocol with the German MCX Service System
4. The train emergency system sends information about the incident to the relevant rail emergency command and control centre(s) or authorities
5. The relevant authorized user(s) in the Dutch and Belgian command and control centres inform the relevant German authorized user(s) which resources, such as heavy lifting machinery, air lift, fire engines or ambulances and capabilities, such as handling chemical spills or weight limitations for lifting equipment are available and when they could be available at the incident site
6. The relevant authorized user(s) in the German Primary MCX Service System collect the information and either automatically or manually, processes the information and request the required resources and capabilities from the Dutch and Belgian MCX Service Systems, plus the relevant rail authorized user(s)
7. The Dutch, Belgian MCX Service Systems and relevant rail authorized user(s) exchange the relevant administrative and security information via the separate administrative configuration protocol with the German MCX Service System
8. After acceptance or successful checks/authorisations, user profiles of the Dutch and Belgian and rail incident support MCX Service Users are updated to include the relevant information, such as user group configuration and encryption key material, assigned by the German MCX Service System
9. The Dutch, Belgian MCX Service Users UEs affiliate to the German MCX Service Groups via the Dutch and Belgian MCX Service System and their Group communication is routed from the public German LTE/5GS through the Dutch and Belgian MCX Service System to the German MCX Service System
10. The relevant rail incident support MCX Service Users UEs affiliate to the incident related and relevant MCX Service Groups

1. First responders from the Dutch and Belgian MCX Service organizations can select and participate in the relevant German talk groups
2. The relevant rail authorities, key personnel and first responders can participate in the MCX services (MCPTT, MCVideo and MCData) with the relevant authorized MCX Services Users

The following requirements refer to TS 22.280. [R-5.6.2.2.1-013] The following requirements refer to TS 33.180, clause 5.1.5 MC user migration service authentication and authorisation.

[PR 5.2.6.1] [PR 5.2.6.2] [PR 5.2.6.3]