Operation Manual

COMfortel 1400IP/2600IP/3600IP - Firmware V2.2G - Operation and Configuration V03 07/2015 159
Functions
Automatic Bandwidth Amplification
Switching Automatic Bandwidth Amplification On/Off
Automatic Bandwidth Amplification
The automatic bandwidth amplification function is used to improve call quality during VoIP calls.
Missing frequency ranges are added to the voice signal to achieve more natural speech repro-
duction and make speech easier to understand. In particular, the quality with which voice
signals transmitted over connections with lower band width can be reproduced can be
improved in this way.
Note: Automatic bandwidth amplification was developed to improve voice
signals. However if calls are made in environments with loud background
noises, automatic bandwidth amplification has a negative effect on voice
quality. The replaying of music, s uch as music on hold, is negatively affected
by automatic bandwidth amplification.
Switching Automatic Bandwidth Amplification On/Off
If automatic bandwidth amplification is switched on, missing frequency ranges are added to the
voice signal, to improve the call quality. If automatic bandwidth amplification is switched off, the
voice signal is reproduced unchanged.
You can switch automatic bandwidth amplification on or off as follows:
• Using the telephone
To enable or disable automatic bandwidth amplification, press a function key that has been
configured for automatic bandwidth amplification.
Alternatively:
1. Tap on Apps > Functions > Automatic bandwidth amplification.
2. In the Operation list field, select one of the following options:
3. Tap on Execute.
switch on: Switches automatic bandwidth amplification on.
switch off: Switches automatic bandwidth amplification off.