... . Network function: built-in DDNS module, easy to achieve domain remote access, support including telecommunications, Unicom, Netcom, Railcom, aspect and ... the VGA, PTZ, 2 audio input.2 output* support for remote monitoring network, USB backup, to support the mouse operation, CD/DVD ... +RW burning, mobile phone monitoring:* support for 1, 2, 4 at the same time playback ...