V380 stream url

Hi
i am using V380 exe downloaded from www.av380.cn and it working on my home pc and i can watch my all connected camera. But when i try to login in my Office’s PC it shows network connection error , and even when i tried without login then camera shows offline, while same camera is working on my mobile phone.
May be this is the issue due to firewall in my office .
So what Should is do
Please help me ?