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Overview

Conferencing Capabilities

The DSP Series 2 card provides the following conferencing capabilities:

• 128 conferences available per DSP stream

• 128 legs/conferees available per conference (all conference types)

• 256 legs/conferees available per DSP chip (you can use half of a chip’s legs in any one conference)

• Direct Media Service Access to Conferences

• Manual Volume Control

Features

The robust suite of Conferencing Features includes:

• Automatic Gain Control

• Output Gain Control

• Noise Gating

• Echo Suppression

• Conference Tracking

• Conference Failure Handling

Conferencing Options

You can configure a conference with the following options:

Barge In

DTMF Clamping/Filtering

EXS Conferencing Encoding Type

Conference Failure Behavior

0x05E5 Barge In

0x0604 DTMF Clamping/Filtering Enable

0x0605 EXS Conferencing Encoding Type

0x0606 Monitor Conference Enable

0x060F Conference Failure Behavior

Resource Location

When recording a conference or playing a file to a conference, the conference resources and the record/playback resources must be on the same DSP Series 2 card.

Supported Conference Types

The DSP Series 2 card supports the following conference types:

• Unified (µ-Law, A-Law, mixed, DTMF Clamped)

• Monitor

Manual Input Volume Control

This feature enables a manual volume control on a parties inbound leg to a conference. The Automatic Gain Control for that party is automatically disabled, and the requested gain is added to the conferee’s speech prior to being added to the conference.

An example application of this feature would be where an individual wants to ensure that his contributions to the conference are heard by the other participants so adds a few dB of gain to their voice, in effect, raising the volume of their voice without additional effort.

Configuration

See Conferencing.

Digital Signal Processor
PCM and companding standard used in North America and Japan to compress and expand the amplitude range of a signal before and after transmission. See A-Law
PCM and companding standard used in Europe to compress and expand the amplitude range of a signal before and after transmission. See µ-Law.