Karel ip112 User Manual - Voice

IP TELEPHONE SET 

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To edit the tone filed via Web interface: 

1) Choose 

Phone->Tones. 

2)  Enter the frequency and time period(in ms) as the following format:   

Frequency /Time Period (for example 400/200). 

3)  Press Confirm button to save the changes, Cancel to cancel the change.   

Note: 

1.  Please contact your system administrator for more information about the frequency 

and time period parameters. You can enter up to 8 groups for each tone. 

2.  If the frequency is set as 0, it means silence.   

VOICE 

To edit the Voice filed via Web interface: 

1）Choose Phone->Voice. 

2）Set the following parameters shown in the table. 

Parameter 

Description 

Echo canceller 

Defines whether to enable the echo canceller. 

VAD 

Voice activity detection (VAD), also known as speech activity 

detection or speech detection, is a technique used in speech 

processing in which the presence or absence of human speech is 

detected. 

CNG 

A comfort noise generator (CNG) is a program used to generate 

background noise for voice communications during periods of silence 

that occur during the course of conversation. 

JITTER 

BUFFER   

It is a shared data area where voice packets can be collected, stored, 

and sent to the voice processor in evenly. 

Type 

To choose the type of JITTER BUFFER, adaptive or Fixed. 

Delay 

To set the Min Delay, Max Delay and Normal Delay parameter.