buffering

Hi all, my first time on here so apologies if this topic has been covered before or posted in wrong place.

I am trying to view my cameras through my dvr on an external device, mainly iphone and sumsung mobiles.

I can access the dvr on my laptop which is connect on the same network as the dvr is on, but when I try to access the dvr from an external network it just says buffering.

Im on the bt broadband network, have spoken to BT and they have confirmed that all the ports and ect are open and my router is pointing correctly to the dvr.

Below is a printout of my router actions

16:52:59, 14 May. IN: ACCEPT [57] Connection closed (Port Forwarding: TCP 192.168.1.10:80 <-->86.151.131.162:80 [86.151.131.162:1024] TIME_WAIT/CLOSED local_dev NAPT)

16:52:51, 14 May. IN: ACCEPT [54] Connection opened (Port Forwarding: TCP 192.168.1.10:80 <-->86.151.131.162:80 [86.151.131.162:1024] CLOSED/CLOSED local_dev NAPT)

16:52:39, 14 May. ath0: STA c8:19:f7:d7:7b:6a IEEE 802.11: Client associated

16:51:41, 14 May. ath0: STA 00:01:3b:b0:cd:c2 IEEE 802.11: WiFi registration failed

16:49:31, 14 May. IN: ACCEPT [57] Connection closed (Port Forwarding: TCP 192.168.1.10:80 <-->86.151.131.162:80 [86.151.131.162:1024] TIME_WAIT/TIME_WAIT local_dev NAPT)

16:49:30, 14 May. IN: ACCEPT [54] Connection opened (Port Forwarding: TCP 192.168.1.10:80 <-->86.151.131.162:80 [86.151.131.162:1024] CLOSED/CLOSED local_dev NAPT)

16:49:30, 14 May. IN: ACCEPT [57] Connection closed (Port Forwarding: TCP 192.168.1.10:80 <-->86.151.131.162:80 [86.151.131.162:1024] TIME_WAIT/CLOSED local_dev NAPT)

16:49:16, 14 May. IN: ACCEPT [57] Connection closed (Port Forwarding: TCP 192.168.1.10:80 <-->86.151.131.162:80 [86.151.131.162:1025] TIME_WAIT/CLOSED local_dev NAPT)

16:49:16, 14 May. IN: ACCEPT [54] Connection opened (Port Forwarding: TCP 192.168.1.10:80 <-->86.151.131.162:80 [86.151.131.162:1024] CLOSED/CLOSED local_dev NAPT)

16:49:03, 14 May. IN: ACCEPT [57] Connection closed (Port Forwarding: TCP 192.168.1.10:80 <-->86.151.131.162:80 [86.151.131.162:1024] TIME_WAIT/CLOSED local_dev

192.168.1.10 is the dvr IP address, 86.151.131.162 is my router IP.

Does anyone know what the term "buffering" means in this case?

Any ideas from anyone please?

Thanks

It means that it cannot get your RTSP live feed, some ISP providers block different ports so that you are not using so much bandwidth, first i recommend changing your RTSP port to a higher port and also all of your others, there has been some times where some ISP companies block a lot of lower ports. like on my DVR i set the" SDK port 8800, HTTP port to 8080 , HTTPS port at 443, RTSP to 2800, " and make sure your port forwarding is correct, but if it says buffering then you just might need to change your ports higher or your internet speed is REALLY slow but still should be able to see at least one camera