
Software User’s Manual Ver.A1D-502-V8.03.30-NB
27
Multicast Setting allows users to configure the IP addresses and ports for multicast
video and audio (supported models only) streams. Multicast is a protocol where a data
stream is sent only once and shared to requesting devices. This in turn saves network
bandwidth. However, to use this feature, network devices, such as routers and switches,
should support IP multicast.
Parameters
Description
Stream 1
Refers to the video stream 1.
Stream 2
Refers to the video stream 2.
Stream 3
Refers to the video stream 3.
Stream 4
Refers to the video stream 4.
Stream 5
Refers to the video stream 5.
Audio
Refers to the audio stream.
Note:
Appears only if the camera model supports audio
input/output.
By Requests
When checked, the video or audio stream will be streamed only
to a particular receiver when that receiver sends a request or in
the case of the Network Video Recorder (NVR), selects to view
or record the stream. If unchecked, the video or audio stream
will constantly be streamed to the network whether there are
devices viewing the video or not.
To save on network bandwidth, it is recommended to check this
function.
Multicast IP
Set the multicast IP of the corresponding stream.
Network Port
Enter the assigned port for the corresponding stream.
Multicast TTL
Enter the multicast TTL (time-to-live) of the corresponding
stream. This value determines the time span (in seconds) when
the packet is retained in the network. When the time expires
and no request is received, the packet is then discarded.
After changing any of the items above, press Apply to save the changes. The Reset button
undoes the changes that had just been made but not applied yet. New port settings will
only take effect after pressing System -> Save & Reboot.
5-4-3 HTTPS
HTTPS protocol allows creating a secure channel over an
insecure network in order to protect the data sent between the camera and its counterpart.
Two things are required to have a secure communication
–
encrypted data, and verified
counterpart of the communication. To make sure that the messages are being sent and
received from true counterpart, the certificate is needed.