# Dialogic® NaturalAccess™ SIP for NaturalCallControl™ API Developer’s Manual

The Dialogic® NaturalAccess™ SIP for NaturalCallControl™ API Developer’s Manual explains how to develop a Session Initiation Protocol (SIP) application using NaturalAccess for NCC SIP software. It provides information about building SIP applications that perform call control with the Natural Access Call Control (NCC) API.

This document is for telephony and VoIP application developers who use Natural Access. It defines telephony and IP terms where applicable, but assumes that you are familiar with these concepts and the C programming language.

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