H.264MP-MegaPixels RTSP Streaming User’s Manual
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【
DDNS Port
】
Default :30000.
【
Data Port Map No
】
Default :5000, is the TCP/IP port open on your Gateway/ Firewall which
will forward to your camera.
【
HTTP Port Map No
】
Default :80, is the TCP/IP port open on your Gateway/ Firewall which
will forward http access to your camera.
Note:
If other than port 80 used, you will need to add http port number every time you access
your camera by IE browser. (ex:
http://Camera_IP_Address(URL):port
)
PPPOE:
Dial-up setting, enable PPPOE if connect your camera to ADSL modem directly.
Get PPPOE Username, Password from your ISP, click
【
Save
】
button
Note:
Please kindly notice the below facts of wireless video.
1. Most wireless cameras are 2.4GHz Wi-Fi, some are 11b, some are 11g
2. Most home routers are with 2.4GHz Wi-Fi, that support 11b+g by default.
3. Most SOHO routers are with
relative weaker power
to be complied with European ETSI
regulations on wireless devices (A AP: total power < 20dBm)
4. The true throughput of 2.4Ghz Wi-Fi is 20Mbps maximum (not 54 or 108Mbps), will be
lesser (down to 1Mbps or smaller) for longer wireless link distance or weaker signal strength
(due to interference, wall, door, windows)
5. The IP camera video will be unstable (not fluent, bad quality, unclear with big square
blocks), if packets lost during wireless transmission.
6. The Wi-Fi transmitting protocols will identify packets lost, will try to resend over and over
again until transmit successful. Resend packets will jam the effective bandwidth under bad
wireless link (interference, weaker signals)
7. The resend packets (previous lost packets) received will be discarded as useless garbage,
because it is out of sequence, out of sequence video frames are useless because of the real
time nature of video.
Conclude the above facts, that's the reason why SOHO Wi-Fi AP will support
"no more than
(4) wireless cameras
", but it is not necessary to be true, if we can conquer below difficulties:
1. For FCC regulations, it is not strictly limited the wireless power as European Countries, we
can choose
professional AP
with higher power, plus higher gain directional antennas.
2. Choose only 802.11g wireless cameras, set the wireless AP to 802.11g mode only, to get
best throughput. Note: 802.11b maximum throughput is only 4Mbps.
3. Choose more professional IP cameras with H.264 video compression that require lesser
bandwidth per camera (30fps @D1, NTSC; 512kbps ~2Mbps maximum).
4. Avoid obstacles in between AP & IP Camera. Choose different wireless channels for
adjacent AP.
5. Choose 802.11a (5.8GHz) for longer range wireless link, or under serious interference to
ensure good wireless link quality.
