The MC system where the interconnection MC service goup is set up, here the primary MC sytems, has to provide the identity of the group to the interconnected partner MC system. The specified procedure in this clause shows how an authorized user of an ACM client in primary MC system can provide the ACM server of partner MC system,or an authorized ACM client of partner MC system with one or more new interconnection MC service group IDs.
The procedure, which enables an authorized MC service user of a primary MC system to provide a list of interconnection group ID(s) to a selected authorized user of a partner MC system, is shown in
Figure 10.17.4.2.2-1.
Pre-conditions:
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Primary MC system and partner MC system are interconnected.
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Both MC systems have implemented an ACM functionality.
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The primary MC system is the MC service group home system for one or more interconnection groups.
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An MC service user of the primary MC system is authorized to provide a list of interconnection group IDs to partner MC system.
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When a functional alias is used as the target of the request by an ACM client in the primary MC system, it is required that the primary ACM server has subscribed to the MC service functional alias controlling server within the primary MC system, and that the partner ACM server has subscribed to the MC service functional alias controlling server within the partner MC system.
Step 1.
The ACM client in the primary MC system sends an interconnection group identity provision request to the ACM server in the primary MC system, providing a list of interconnection group IDs and the ID of the selected authorized user in the partner MC system.
Step 2.
The ACM server of the primary MC system checks whether the MC service user at ACM client is authorized for the request. If the authorization check fails, the procedure is stopped.
Step 3.
The ACM server of the primary MC system forwards the interconnection group identity provision request to the ACM server in the partner MC system.
Step 4.
The ACMS of the partner MC system sends a process indication to primary MC system, and stores, verifies and assesses the incoming request.
Based on local policy,
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the ACMS of the partner MC system may automatically handle the request as described in clause 10.17.3.2 and continues with step 8,
or
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the ACM server requests verification by an ACM client: If the user is not logged on, the pending request procedure as described in clause 10.17.3.1 is followed. If the request targets a functional alias, the ACM server of the partner MC system resolves the functional alias (based on the current state of the functional alias) and proceeds as follows:
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if the functional alias is active for one ACM client, the request is sent to the ACM client;
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if the functional alias is active for more than one ACM client, the ACM server sends the request to one of these ACM clients based on the local policy;
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if the functional alias is not currently active, the ACM server of the partner MC system stores the request.
Step 5.
The ACM server of the partner MC system forwards the stored interconnection group identity provision request to the ACM client of the partner MC system.
Step 6.
The selected authorized user of the partner MC System processes the interconnection group IDs, e.g. by saving the information for future use. The authorized user in the partner MC system takes whatever actions are needed to handle the request. The actions taken within the partner MC system are outside the scope of the 3GPP specifications.
Step 7.
The ACM client of the partner MC system sends a interconnection group identity provision response to the ACM server of the partner MC system.
Step 8.
The ACM server of the partner MC system forwards the interconnection group identity provision response to the ACM server in the primary MC system.
Step 9.
The ACM server of the primary MC system stores the interconnection group identity provision response. If the primary ACM client is not logged on the primary ACM server will follow the pending request procedure as described in
clause 10.17.3.1.
Step 10.
The ACM server of the primary MC system forwards the interconnection group identity provision response to the ACM client of primary MC system, informing the authorized user of the primary MC system that the list of interconnection group IDs has been provided to the selected authorized user of the partner MC system.