Implementing Positive Voice Detection/Answering Machine Detection

Introduction

You can configure the Excel platform to analyze incoming PCM data and detect voice or an answering machine. You can set PVD/AMD parameters for a DSP Series 2 card and for an individual channel. When a signal is detected, the host is notified with a Call Processing Event 0x002E message.

Configuration

1. Configure DSP for PVD/AMD function using the DSP SIMM Configure 0x00C0 message.

DSP Function Type

PVD/AMD (0x34)

2. Set card-level PVD/AMD parameters using the Generic Card Configure 0x0122 message.

Mandatory TLV

0x05FA Card Object

Object Type: PVD/AMD Parameters (0x0006)

Implementation

1. Attach PVD/AMD receiver to channel using the Resource Connect 0x0127 message

AIBs

Resource A: Span/Channel

Resource B: Slot

Mandatory TLV

0x0602 Resource Type

Resource Type = PVD (0x0108) or AMD (0x0109)

Optional TLVs (to override default card parameters)

0x0619 PVD Parameters

0x0620 AMD Parameters

2. To disconnect the channel from the DSP resource, use the Resource Disconnect 0x0128 message.

AIBs

Resource A: Span/Channel

Mandatory TLV

0x0602 Resource Type

Resource Type = PVD (0x0108) or AMD (0x0109)

Optional TLVs)

None

Query

Use the Generic Card Query 0x0123 message to query the card-level defaults for PVD/AMD.