# Dialogic® NaturalAccess™ Switching Interface API Developer's Manual

The Dialogic® NaturalAccess™ Switching Interface API Developer's Manual provides:

- An overview of the Switching service

- A reference of functions and errors

This manual defines telephony terms where applicable, but assumes that you are familiar with telephony concepts and switching. It also assumes that you are familiar with the C programming language.

Note: References to MVIP-90 in this manual are for legacy systems only.

Read the Dialogic® NaturalAccess™ Software Developer’s Manual before using this manual. The Dialogic® NaturalAccess™ Software Developer’s Manual contains detailed information on NaturalAccess concepts, architecture, and application development. This information must be fully understood before you develop a switching application using NaturalAccess.

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