Call Server

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Used in the Interim VoIP Architecture For Enhanced 9-1-1 Services standard to refer to the entity in a private or public IP domain that provides service to endpoints in an emergency caller's home domain and that interworks with the SIP servers and other elements in the IP domain used to support emergency services call routing in the i3 solution. The Call Server may use SIP or some other VoIP signaling protocol within its own serving domain.