Karel IP111 User Manual - Trouble Shooting

47

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. 

3) Consult the outbound server details with your ISP. 

Have DTMF problem? 

1) Check which kind of DTMF you are using, and whether it is compatible with the server. 

2) Consult the payload value with your ISP. 

How to change the time? 

Select the time zone or enter the time information manually on the webpage or the phone. 

How to answer the incoming calls during a call? 

If a call comes in when you are in a conversation, press the Answer key to answer the 

incoming call. 

How to refuse incoming calls during a call? 

You can turn off the function of call waiting, and then our phone will refuse all the incoming 

calls when you are in a conversation. 

How to update the firmware? 

1) Enter the webpage of your phone, go to Upgrade, then you can find the option”