TechVision DVR-LT04120 User Manual page 109

 Enable DDNS
You need a PC of fixed IP in the internet and there is the DDNS software running in
this PC. In other words, this PC is a DNS (domain name server).see Figure 7-31.
Please enable DDNS function and then input PC IP. Click save button and then
reboot device. Now you can login via DDNS. Please open IE and then input http：
//(DDNS server IP)/ DDNServer / default.htm. for example, input http：
//10.5.2.149/DDNServer/default.htm, you open a DDNS server web page.
 RS232
RS232 includes the following items. See Figure 7-32.
 Function: There are various devices for you to select. Console is for serial
port or
min-end platform to upgrade program. Keyboard is for you to use special
keyboard to control current device.
Baud rate: Please select as you desire.

 Data bit: The value ranges from 5 to 8.
 Stop bit: There are three options: 1/1.5/2.
 Parity: There are three options: none/odd /even.
Figure 7-30
Figure 7-31
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