Applies to: All NVR
The data is only for your reference and the real figure depends on local network circumstance.
One camera needs 2-3M bandwidth on the router to upload the video to the Internet so that phone or computer view.
When the phone is using the 3G or 4G network to connect system, one camera needs 30-70kb/s in substream.
When the phone is using wifi to connect system, one camera needs about 200-500kb/s in the mainstream.