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- Instead of using typical ISP's network hops, one of "Dual Connection" will send the DVR traffic through the nearest, healthiest with the least congested route to the remote access site, result in almost instant and no delay live streaming from remote access application.
This feature will entirely depend on ISP's upload throughput.
Here is the test result, we tested on Hikvision NVR, and the iVMS-4200 with H.264 enabled.
TimeWarner Internet 100Mbps Download / 10 Mbps Upload plan.
2MP/1080p/12fps will delay under 10ms from remote viewing
4MP/2048kbps/20fps IP Camera delay 50 ms
4MP/4096kbps/20fps IP Camera delay 1 second at peak full congested hour at 7 PM.
What you see from the DVR monitor will mostly be synced at the remote site's CMS software with "Zero Second Delay."
*If ISP upload throughput is higher than 10Mbps, it can reduce more delay.
in our test, DVR and the Remote site both were "wired" so if wireless router or mobile data network applied, then it will add their network delay.
- Connection #1 will be the primary connection along with Connection #2 as the backup. The "Primary" mainly focuses on improving speed, and The "Backup"'s fundamental skill is Port Forwarding,
- In case having trouble with Port Forwarding due to stringent firewall policy, then it will swap to Connection #2 which is the classic method of Port Digger focus on Port Forwarding to make sure the DVR is accessible, but that's rare case so mostly it will be fast and stable Dual Connection.
- Once Port Digger detects that #1 is possible to connect, it will switch back to #1 from #2 and provides better latency and speed.