Avaya Scopia XT5000 Manuale utente

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Radvision XT5000 > Radvision XT5000 - Evaluation results main document

Radvision XT5000 - Evaluation results main

document

Radvision XT5000 - Evaluation results main document

Radvision XT5000

Manufacturer: RADVISION, an Avaya company

Model: XT5000

Software Version: 3.1.0.36

Optional Features and modifications: Nine Site Multipoint Conference Unit (MCU) 12 Mbit/s

Extended IP

Date of Test: 3rd ? 7th December 2012

Setup Procedure

Setting up the XT5000 system was straightforward. The compact CODEC and the HD camera

can both be mounted adjacent to the picture monitor/s. A system microphone pod, infrared

remote control and an external power supply completed the package.

The connections for basic operation were clearly illustrated on the installation guide and in the

documentation and involved:

Mounting the camera adjacent to the monitor(s)

Connecting the combined HDMI-HDMI video, control and power cables between the

camera and the CODEC

Connecting the supplied HDMI-HDMI cables between the CODEC and the monitor/s

Cabling the microphone to the CODEC

Establishing an Ethernet IP network connection through the RJ45-RJ45 cable

Connecting the external power unit to the CODEC

System set up was conveniently configured through the ?on-screen? menus via the hand held

remote control. IP address, IP Gateway, Subnet mask and Gatekeeper address were all

entered through these menus.

Approximate set-up time: 15 minutes

Documentation quality: The concise User, Installation and Administrator Guides were all easy

to follow.

Hardware Description

This compact XT5000 CODEC may either be mounted within a picture monitor cabinet or

adjacent to the monitors/s. Provided with two auto switching 10/100/1000 Ethernet

connections and capable of conferencing up to a bandwidth of 6 Mbit/s point to point and a

combined MCU bandwidth of 12 Mbit/s. The system can display a maximum image resolution

of 1080p at 60 frames/second on both the main and H.239 channels. The Vari-Speed cooling

fan was very quiet in operation and unobtrusive in the conference environment.

System options include:

1. A four or nine site on-board Multipoint Conference Unit (MCU).

2. 12 Mbps Extended IP Bit Rate.

3. Additional Digital Microphone Array Pod.

4. Advanced Audio CODEC pack (G.728 andG.729A).

5. Support for Scopia desktop and mobile.

Systems supplied for evaluation included a range of the above options.

The main HDMI connection carries the digital audio output but digital Optical audio inputs and

outputs are also available by using a mini-TOSLINK adapter to the 3.5mm jack connector.

Separate analogue audio input and output connections are also provided.

The XT5000 Plus system supports eleven video resolutions including:

The basic CIF format resolution of 352 x 288 pixels.

wCIF (512 x 288).

Optimal resolution w448p (768 x 448).

High definition w720p (1280 x 720).

High definition w1080p (1920 x 1080).

The achievable image resolution and frame rate are dependent not only on the call

connection bandwidth but also on whether the ?Video Quality Sharpness? is set to ON

or OFF. OFF is the default setting that maximises frame rate at very low connection

bandwidths.

Video Quality

Sharpness OFF ON

Connection

Bandwidth Resolution Frame rate Resolution Frame rate

128 Kbit/s 416 x 240 25 624 x 352 15

384 Kbit/s 848 x 480 25 848 x 480 25

768 Kbit/s 1280 x 720 25 1280 x 720 25

1 Mbit/s 1280 x 720 50 1280 x 720 50

2 Mbit/s 1920 x 1080 50 1920 x 1080 50

3 Mbit/s 1920 x 1080 50 1920 x 1080 50

4 Mbit/s 1920 x 1080 50 1920 x 1080 50

6 Mbit/s 1920 x 1080 50 1920 x 1080 50

In addition to the traditional Picture in Picture (PIP) display format, the CODEC also supports

Picture outside Picture (POP). This allows both near and far end images to be displayed side

by side simultaneously on a single picture monitor.

POP is particularly useful when a single large screen display device such as a plasma/LCD

panel or video/data protector is used as it permits greater flexibility in the choice of image

layout. In single monitor mode a maximum of two images may be displayed, it is thus not

possible to view the near, far and presentation images simultaneously.

Image layout selection may be achieved via two methods; using the graphic on screen user

interface or a combination of layout and PIP buttons on the remote control.

Selecting the OK button on the remote control accesses an on screen menu of user controls

which allows selection of image layouts from the graphic menu.

Image not found

file:///var/privatewebfiles/privatefiles/public_images/screen%20user%20interface.JPG

Image not found

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Graphic User Interface images

Alternatively the layout and PIP buttons on the remote control may be used, while this two

button control provides flexibility in selection it could prove confusing to an occasional system

user.

The ?PIP? button on the remote control selects between the following layouts:

Full screen of the far end image with near image PIP

Near and far end images side by side POP

Large far end image, small near image POP

Full screen of the far end image

The ?Layout? button swaps images around so for example it would toggle between

Large far end image, small near image POP

Large near end image, small far image POP

When H.329 dual images are either transmitted or received in single monitor display mode the

?PIP? button can select these combinations:

Full screen of the presentation image with far image PIP

Presentation and far end images side by side POP

Large presentation image, small far image POP

Full screen of the presentation image

Image not found

file:///var/privatewebfiles/privatefiles/public_images/various%20presentation%20images.JPG

In Dual monitor mode without Presentation material the monitors display:

Not in a Call In a Call

Main monitor Near Image + Menu Far Image + Menu

Second monitor Near image Near

When presentation material is transmitted or received the second monitor displays the

presentation material and the main monitor normally carries the menu information. The ?PIP?

button then selects the following layouts for the main monitor:

Full screen of the far end image with near image PIP

Near and far end images side by side POP

Large far end image, small near image POP

Full screen of the far end image

The ?Layout? button again swaps images around so for example it would toggle between

Large far end image, small near image POP

Large near end image, small far image POP

Some HD picture monitors have a tendency to crop images at the edges and lose information.

The main video output of the XT5000 CODEC contains the on-screen menus which are vital

to operate the CODEC, so to avoid problems an HDMI Over-scan control is provided within

the set-up menu which adjusts the size of the display images to preserve all of the

information. Presentation images from a PC may similarly be adjusted to avoid cropping.

The PTZ (Pan Tilt and Zoom) 1080p HD camera supplied has a native resolution of 1920

x 1080 pixels and horizontal viewing angles of 70 degrees.

Far end camera control (FECC) is supported.

CODEC inputs include the HDMI HD camera input and a separate DVI-I interface for PC

connection which will automatically select to:

Analogue RGB

Digital

This input supports Extended Display Identification Data (EDID).

The HDMI and DVI inputs do not support High Definition Content Protection (HDCP).

Dual video coding H.239 is supported providing a second unidirectional video channel.

Thus presentation material from a camera and material from a PC could be transmitted

simultaneously and displayed on two monitors at the remote site.

When two XT5000 systems conferenced together over a 6 Mbit/s connection set to the

UK location default settings it was possible to transmit two simultaneous high resolution

images, the main camera channel at 1080p @50fps and the presentation channel at

1080p @60fps.

Within the ?Admin? settings the Video Quality control may be set to Sharpness ON/OFF,

this only affects conferences of 384 Kbit/s and below.

The table illustrates this:

Main Channel Only Main Plus Presentation

Sharpness: No

Main Plus Presentation

Sharpness: Yes

Call

Bandwidth Sharpness:

No Sharpness: Yes Main Presentation Main Presentation

6Mbit/s 1920x1080

@50

1920x1080

@50

1920x1080

@50

1920x1080

@60

1920x1080

@50

1920x1080

@60

4Mbit/s 1920x1080

@50

1920x1080

@50

1920x1080

@50

1920x1080

@60

1920x1080

@50

1920x1080

@60

2Mbit/s 1920x1080

@50

1920x1080

@50

1280x720

@50

1920x1080

@30

1280x720

@50

1920x1080

@30

1Mbit/s 1280x720

@50

1280x720

@50

1280x720

@25

1920x1080

@30

1280x720

@25

1920x1080

@30

768 Kbit/s 1280x720

@25

1280x720

@25

848x480

@25

1920x1080

@30

848x480

@25

1920x1080

@30

384 Kbit/s 848x480

@25

848x480

@25

512x288

@25

1920x1080

@30

848x480

@25

1920x1080

@30

128 Kbit/s 416x240

@25

624x352

@15

416x240

@25

1920x1080

@30

416x240

@25

1920x1080

@30

The reported frame rates in the table above reflect ?target? frame rates, for example in a

lower bandwidth connection with significant motion within the image the actual frame rate

achieved was observed to be significantly lower than the reported target.

Several audio formats are supported by the XT5000 CODEC. Radvision has implemented the

ITU standard G.719 audio protocol giving 20KHz analogue audio bandwidth requiring 64

Kbit/s of connection bandwidth.

PC audio input and stereo audio outputs are both available via industry standard 3.5mm mini

jack connectors. The main HDMI output carries the digital stereo signals, optical digital audio

input and output connections are also available via mini-TOSLINK adaptors

Encryption is provided at all connection speeds through Advanced Encryption Standard (AES)

with a 128 bit session key.

SYSTEM OPERATION

The system may be operated locally from the infra-red remote control. The on-screen menus

are logical and easy to follow. The system may also be configured and controlled via a web

browser interface from a network connected PC. For security this remote web connection is

password protected. The CODEC may also be interfaced to a room control system via an IP

network connection.

Image not found

file:///var/privatewebfiles/privatefiles/public_images/on%20screen%20menu%20and%20remote%20control_0.JPG

The remote control includes a comprehensive selection of single operation control buttons.

As the same remote control is also used on the companies XT1000 CODEC the four

multifunction colour coded buttons are redundant on the XT5000.

The CODEC remote control includes a single start/finish presentation source button:

Pressing this button for a short period selects the PC presentation source and opens an

H.239 connection

Pressing the button again for a short period closes the H.239 connection

An H.239 connection is initiated and terminated on the remote control via the on-screen

graphical interface. The main camera occupies one channel and the source connected to the

DVI-I input the second channel, normally a PC. At the remote site these two images may

either be viewed on two separate monitors or using POP displayed on a single screen. The

DVI-I input may also be switched to transmit on the main channel if H.239 is not in use.

Alternatively several user controls are available during a call from the graphic user interface;

this is accessed by pressing the OK button on the remote control.

Image not found

file:///var/privatewebfiles/privatefiles/public_images/screen%20user%20interface.JPG

Graphic User Interface

The system takes a significant period to boot up from cold (~70 seconds), on screen graphics

provide useful user feedback that the system is booting up. When not in a call the system

automatically goes into sleep mode after a user-definable period of time, it can also be put

into standby mode via the remote control. An incoming call or a remote control button press

will return the system to active mode.

The Statistics menu displays call status data including connection speed, compression

protocols and packet loss.

The system may also be configured, controlled and monitored via a password protected web

browser from a network connected PC. This facility provided control and monitoring facilities

including an online version of the system remote control. Snapshot images of the local video

at the CODEC are also provided and the user may select the image size and refresh rate of

this image, this web video image of the local camera is however only available when the

system is not in a call. Video snapshots of the far end video are not available.

Image not found

file:///var/privatewebfiles/privatefiles/public_images/web%20configuration%20and%20call%20control%20interfaces_0.JPG

Image not found

file:///var/privatewebfiles/privatefiles/public_images/web%20video.JPG

The XT5000 proprietary microphone pod includes three microphones to guarantee 360

degree coverage, audio beam forming is used to steer the overall microphone pod pickup in

the direction of the speaker. The pod includes a mute button; this button is illuminated red

when muted. The mute button inhibits all audio transmission to the remote site, including PC

audio. A second microphone may also be connected to the CODEC via a daisy chain

connection to the first microphone pod.

Optional MCU

An optional four or nine site MCU supports up to three or eight remote sites plus the host

XT5000 MCU CODEC. The maximum combined conference bandwidth is 12 Mbit/s.

Controlling an MCU conference is a simple procedure:

1. Select the ?Make a Call? button during a call.

2. Enter the number of the additional site into the call menu or select the site from the

directory or the recent call list.

3. Press the ?OK? or ?Make a Call? button.

4. The additional site will then be connected to the conference.

Individual or all connections may be disconnected using the graphic interface.

All sites receive a continuous presence split screen display with the local MCU CODEC

controlling several layout options. For example:

Remote sites equal size

Large voice switched current speaker image with small images of other sites

Image not found

file:///var/privatewebfiles/privatefiles/public_images/various%20images%20of%20remote%20sites.JPG

When presentation material is transmitted or received the available layouts include:

Image not found

file:///var/privatewebfiles/privatefiles/public_images/various%20layouts%20for%20remote%20sites%20and%20presentations.JPG

In dual monitor mode the Presentation material is displayed on the second monitor.

VIDEO TESTS SUMMARY

The video quality experienced between XT5000 systems at 1080p 50fps was excellent; the

high resolution images and the superb motion rendition at 1080p 50fps were impressive. The

ability to transmit two simultaneous channels of high resolution, high frame rate images is a

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