Polycom 1725-11530-200 Rev A1 manual Presence and Instant Messaging Features, Comfort Noise Fill

Administrator’s Guide - SoundPoint® IP / SoundStation® IP Features

3.3.8 Background Noise Suppression (BNS)

This feature, designed primarily for hands-free operation, reduces background noise to enhance communication in noisy environments.

3.3.9 Comfort Noise Fill

Comfort noise fill is designed to help provide a consistent noise level to the remote user of a hands-free call. Fluctuations in perceived background noise levels are an undesirable side effect of the non-linear component of most AEC systems. This fea- ture uses noise synthesis techniques to smooth out the noise level in the direction toward the remote user, providing a more natural call experience.

3.3.10 Automatic Gain Control (AGC)

This feature, applicable to hands-free operation, is used to boost the transmit gain of

the local talker in certain circumstances.3 This increases the effective user-phone radius and helps with the intelligibility of soft-talkers.

3.4 Presence and Instant Messaging Features

The phone contains both Presence and Instant Messaging features. These features are compatible with Microsoft® Windows® Messenger 5.1. The phone’s presence and instant messaging features are integrated with the contact directory features, using its contact database.

3.4.1 Presence

The Presence feature allows the phone to monitor the status of other users/devices and allows other users to monitor it. The status of monitored users is displayed visually and is updated in real time in the Buddies display screen or, for speed dial entries, on the phone’s idle display. Users can block others from monitoring their phones and are

notified when a change in monitored status occurs4. Phone status changes are broad- cast automatically to monitoring phones when the user engages in calls or invokes do-

3.AGC support will be available in a subsequent release.

4.Notification when a change in monitored status occurs will be available in a subsequent release.

60 Copyright © 2006 Polycom, Inc.