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Content for  TS 23.231  Word version:  17.0.0

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4.4.4  Mobile to Mobile Callp. 15

The mobile to mobile call may use either the deferred MGW selection or optimised MGW selection. The reason for choosing deferred MGW over optimised MGW would be to attempt to select the MGW at the edge as the originating MSC does not know where the call will finally terminate.
An example of mobile to mobile call using optimised MGW selection is show in Figure 4.4.4.1.
Copy of original 3GPP image for 3GPP TS 23.231, Fig. 4.4.4.1: Optimised MGW Selection for mobile to mobile calls
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