Karel IP116 User Manual - Trouble Shooting

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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. 

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

Ring 

Users can group your contacts, and then set the ringing tone for each group. 

To edit the Ring option via Web interface: 

1) Choose Phone->Ring. 

2) Internal Ringer Text: To set group name. For example, family. 

3) Internal Ringer File: To choose a special ring tone for the group. 

4) Click the Confirm button to save the changes. 

TROUBLE SHOOTING 

I can not register to the server

？

1) Check the IP address. If you set your WAN port in DHCP mode, please make sure that 

your DHCP server is on. 

2) Check your gateway. 

3) Check your DNS server. 

4) Make sure your account information is the same as you have got from your ISP. 

5) Check whether the SIP server is on. 

6) Check the SIP register port, the default value is 5060. 

I can’t get the IP address? 

1) Make sure you have plugged the Ethernet cable into the WAN port. 

2) Make sure that the DHCP server is on, and there are available IP addresses in the server. 

3) Try to set your WAN port to static IP client mode. 

During a call, I can not hear any voice? 

1) Make sure your handset is tightly connected with the phone. 

2) Check whether you have muted the conversation or not.