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Setting up audio features, Low-delay audio packet transmission, Jitter buffer and packet error concealment – Polycom SOUNDPOINT SIP 2.2.0 User Manual

Page 90: Setting up audio features –42, Emplo

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Administrator’s Guide SoundPoint IP / SoundStation IP

4 - 42

l

Set the roaming_privacy.reg element to the number corresponding

to the LCS registration.
For example, roaming_privacy.reg = 2
Refer to

Roaming Privacy

on page

A-99

.

m

Save the modified phone1.cfg configuration file.

Setting Up Audio Features

Proprietary state-of-the-art digital signal processing (DSP) technology is used

to provide an excellent audio experience.
This section provides information for making configuration changes for the

following audio-related features:

Low-Delay Audio Packet Transmission

Jitter Buffer and Packet Error Concealment

Voice Activity Detection

DTMF Tone Generation

DTMF Event RTP Payload

Acoustic Echo Cancellation

Audio Codecs

Background Noise Suppression

Comfort Noise Fill

Automatic Gain Control

IP Type-of-Service

IEEE 802.1p/Q

Low-Delay Audio Packet Transmission

The phone is designed to minimize latency for audio packet transmission.
There are no related configuration changes.

Jitter Buffer and Packet Error Concealment

The phone employs a high-performance jitter buffer and packet error

concealment system designed to mitigate packet inter-arrival jitter and

out-of-order or lost (lost or excessively delayed by the network) packets. The