TIPTEL VP 28 Manual page 72

tiptel VP 28
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.
Blank screen?
The device is in Sleep status. Please press any keys to active the screen.
How to update the firmware?
1) Enter the webpage of your phone, go to Upgrade, then you can find the
option "Select and Upgrade Firmware" at the bottom of the page.
2) Select the file to update, and then click the Upgrade button.
Note:
Make sure the firmware you choose is provided by your service provider, or the device
will probably crash after the update.
The manual is only for reference, please take the object as the standard.
We reserve the right to improve or change the product and the user guide without
notice.
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Trouble Shooting