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Overview21222324252627282931323334353637384‑5x

Content for  TR 23.981  Word version:  16.0.0

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0  IntroductionWord‑p. 5
3GPP specifications design the IMS to use exclusively IPv6, however early IMS implementations and deployments may use IPv4, as specified in clause 5.1 of TS 23.221. Therefore it is understood that there will exist IPv4 based IMS implementations, namely initial IMS implementations and IMS implementations based on 3GPP2 specifications. This is the motivation to study interworking and migration scenarios related to IPv4 based IMS implementations.
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1  ScopeWord‑p. 6
The present document studies study interworking and migration scenarios related to IPv4 based IMS implementations. The study provides guidelines for operators and vendors on interworking aspects of IPv4 based IMS implementations, and provides guidelines on migrating to 3GPP IMS using IPv6.

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