Moxa VPORT 254-M-SC-T Manual de usuario descargar pdf (Pagina 41)

VPort 254 User’s Manual Accessing VPort 254’s Web-based Manager

3-3

Camera Image View

The assigned image description and system date/time will be displayed in the caption above the

image window. You may disable the caption or change the location of the image information from

the System Configuration/Video/Image Setting. Note that if the VPort’s motion detection

function is active, some windows in the video picture might be framed in red.

Audio Control

The VPort 254 provides both audio input and audio output for voice over IP communication.

Client users can directly enable and disable the audio input (a microphone, for example) by

clicking the microphone button, and audio output (a speaker, for example) by clicking the speaker

button from the VPort’s web homepage. You may also use the Client Setting to disable the audio

transmission.

Client Setting

Users can configure the following functions in Client Settings.

1. Encoder standard: Shows the encode algorithm currently being used.

2. Media Options: Enable or disable the video or audio transmission.

3. Protocol Options: Choose one of four protocols to optimize your usage—Multicast (RTSP or

Push) or Unicast (UDP, TCP, HTTP).

y Multicast protocol can be used to send a single video stream to multiple clients. In this case, a

lot of bandwidth can be saved since only one video stream is transmitted over the network.

However, the network gateway (e.g., a switch) must support multicast protocol (e.g., IGMP

snooping). Otherwise, the multicast video transmission will not be successful.

- RTSP: Enable the multicast video stream to be sent in RTSP control, which means the

multicast video stream will be sent only it receives the client’s request.

- Push: Enable the multicast video stream to be sent in Push control, which means the

multicast video stream will be sent continuously after this setting is selected.

y Unicast protocol is used to send a single video stream to one client.

- UDP protocol can be used to produce audio and video streams that are more real-time.

However, some packets may be lost due to network burst traffic, and images may become

blurred.

- TCP protocol can be used to prevent packet loss, which results in a more accurate video

display. The downside of using TCP is that the real-time effect is worse than with UDP

protocol.

- HTTP protocol can be used to prevent being blocked by a router’s firewall. The downside

of using HTTP is that the real-time effect is worse than with UDP protocol.

Once the video encoder is connected successfully, Protocol Options will indicate the selected

protocol. The selected protocol will be recorded on the user’s PC, and will be used for the next

connection.

NOTE

For multicast video stream setting, please refer to System Configuration →Network →

Multicast.

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Moxa VPORT 254-M-SC-T Manual de usuario Pagina 41