Karel NT321, Техническое описание и руководство пользователя

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NT32I Technical Reference and User Guide
19
RTP Port
This is used for sending and receiving RTP. This number may be between 1024
and 65535. Default value is 4000
.
Record End
At this part the value of time is selected. This time shows the intervals (in
seconds) to send “Keep alive” to SIP Server. Minimum is 10 sec. and maximum
is 655535 sec. Default value is 60 sec.
Keep Alive
“Keep alive” shows the time that in how many seconds telephone will send
empty UDP to SIP server again. Default value is 20 seconds.
DTMF Mode
This part is used for defining the way how DTMF digits will be sent. There are 3
different way to send DTMF.
- Inband
- RFC2833
- SIP Info
NAT /NAT IP
This is used to enable or disable NAT device.
STUN
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.
After making all adjustments about NT32I telephone set, IP user information
should be defined. This is obligatory and must not be forgotten.
If server can not get user information correctly, NT32I will send REGISTER
message to server in regular intervals. If server can not identify user, NT32I
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.
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
.