Minimum Upload Speed for accessing any Zmodo product remotely is 1.5Mbps 

Maximum Latency for accessing any Zmodo product remotely is 100ms

NVRs cannot be connected to a switch (Routers only)

For wireless devices:

You must use a 2.4Ghz wireless network.

The signal strength must stay at or better than -60dBM during a 20 second test. 

Zmodo does not support or assist in the setup of wireless cameras in a LAN only network environment.

General

Zmodo does not support or assist in the setup of a DVR/NVR/Camera to be viewed over satellite internet.

Zmodo does not support or assist in the setup of a DVR/NVR/Camera to be viewed using a cellular hotspot or similar device providing internet through a cell tower.

No matter what your source of internet is, you will always be able to view an analog DVR over a computer at the SAME LOCATION assuming both the computer and DVR are connected to the same router.