Yealink SIP-T22 User Manual download pdf (Page 45)

Professional IP Phone Trouble Shooting

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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.

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Yealink SIP-T22 User Manual Page 45