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Content for  TS 23.280  Word version:  19.3.1

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11.3 Using identities behind the MC gateway UE  11.3.1 General  11.3.2 When using separate IMS subscriptions  11.3.3 When sharing MC gateway UE's IMS subscription 
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11.3  Using identities behind the MC gateway UE  p. 338

11.3.1  General  p. 338

The MC gateway UE enables access to the MC system for MC clients either hosted on the MC gateway UE or hosted on non-3GPP devices. MC clients hosted in a non-3GPP device utilize MC service identities that are transparently passed through the MC gateway UE. This is further illustrated in clause 11.3.2.
MC clients hosted in MC gateway UE also utilize unique MC service identities and share one common IMS subscription that is unique for MC gateway UE. This is further illustrated in subclause 11.3.3.
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11.3.2  When using separate IMS subscriptions  p. 339

If the MC clients are hosted by non-3GPP devices or the MC clients are hosted by the MC gateway UE, an MC service user corresponding to an MC client uses a dedicated IMS/SIP subscription without any relation to the MC gateway UE subscription.
Figure 11.3.2-1 depicts the use of the IMS Credential (IMC) application in accordance with TS 23.228.
Reproduction of 3GPP TS 23.280, Fig. 11.3.2-1: IMC per MC service client
Figure 11.3.2-1: IMC per MC service client
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The MC service user profiles are independent of the MC gateway MC service user profile.

11.3.3  When sharing MC gateway UE's IMS subscription  p. 339

The MC clients, instantiated at the MC gateway UE on behalf of the non-3GPP devices which cannot host an MC client, rely on the IMS subscription provided by the MC gateway UE. In this case, the MC clients instantiated at the MC gateway UE share the credentials from the IMS subscription of the MC gateway UE, as shown in Figure 11.3.3-1.
Reproduction of 3GPP TS 23.280, Fig. 11.3.3-1: Sharing MC gateway UE's IMC for non-3GPP devices which cannot host a client
Figure 11.3.3-1: Sharing MC gateway UE's IMC for non-3GPP devices which cannot host a client
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11.4  Void

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