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5.1 Introduction

This chapter explains how to use AG Access to generate tones, detect tones, detect energy, and use an on-board timer. This chapter also includes details about performing low-level call control.
If you plan to use any of the detectors in your application, keep in mind that you may have to modify the callctl.mediamask in ADI_START_PARMS before you start a telephony protocol. The mediamask controls which functions will be running or reserved when the call enters the Connected state. "Reserved" indicates that the DSP MIPS have been committed to the operation before the operation has actually started. The application must reserve DSP resources in advance by using this mediamask for DTMF detection, silence detection, cleardown detection, and echo cancellation.

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