Karel NT421, Техническое описание и руководство пользователя

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NT42I Technical Reference and User Guide
15
- Inband
- RFC2833
- SIP Info
NAT /NAT IP
This is used to enable or disable NAT device.
STUN Server
At the beginning, entering STUN server’s IP address or entries about server will be enough.
After making all adjustments, click on “Save” to activate the changes.
STUN Port
This part is used for entering port number parameter of STUN. This number may be between
1 and 65535. Default value is 3478
.
After making all adjustments about NT42I telephone set, IP user information should be
defined on server. This is obligatory and must not be forgotten.
If server can not get user information correctly, NT42I will send REGISTER message to
server in regular intervals. If server can not identify user, NT42I shows “Registration Failure”
on the screen.
If telephone registers to the server normally, telephone can communicate with predefined
analog and digital telephones and use all services that server supports.
PHOTO FRAME FEATURE
NT42I IP Telephone’s screen has digital photo frame feature. Firstly connecting with IP
address to web page and come to the photo frame on the left menu. And then what photo
you want to see on the phone’s screen as screen saver, can upload.