Topology Hiding Inter-working Gateway
Topology Hiding Inter-working Gateway
Signalling emanating from the home IMS (IP Multimedia Subsystem) may be protected through topology hiding. This increases the robustness of the IMS in terms of security. Since functions outside the trust domain of the home IMS have no view of the URI (Uniform Resource Identifiers) that are used to address functions such as the S-CSCF (Serving - Call Session Control Function) or MGCF (Media Gateway Control Functions).
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