System Device Tests for Class

To Test the System Configuration

Test your system's compatibility for flash player, browser, operating system, and port settings.

System configuration requirements

Software Type/Version

Flash player 10.3 or later

Browser Internet Explorer, Chrome*, Safari, Firefox, Opera

Operating system Mac OS X, iOS, Microsoft Windows, Android, Linux

Port 1935 RTMP or Port 80 Should be open

*Users on Chrome browser must upgrade the browser to version 28.0.1500.72 or above for better Audio/Video experience in the Virtual Classroom.

Test results

Detecting Operating System

Operating System: Passed Failed

Detecting Flash

Flash player: Passed Failed

You need Flash Player version 10.3 or later.

Install Flash Player

Detecting Browser

Browser: Passed Failed

Chrome version may result in audio/video issues.

See how to resolve this issue

Testing Ports

Port: Open 1935 is blocked.

See how to resolve this issue

Test again

Issue with your Chrome browser version

The version of your Chrome browser may seriously impair audio/video quality in the Virtual Classroom. This may result in lag or disturbance in audio/video streaming of live classes. This issue occurs in Chrome version 21 or above on window operating system and Chrome version 23 or above on Mac.

Fix Chrome settings with one of these options:

Follow simple steps to fix manually

Manual Fix

Learn how to automatic fix works

Test Internet connection speed

These requirements are based on one-on-one scenarios in virtual classroom.

Internet connection speed requirements

Use in Virtual Classroom Minimum speed Suggested speed

Only audio session 44 kbps 256 kbps

Audio session + other features* 300 kbps 512 kbps

Only video session 106 kbps 512 kbps

Video session + other features* 356 kbps 1 Mbps

*other features include screen sharing, watching YouTube or other videos, sharing content etc.

Test results

Testing internet speed

Internet Speed:

Test again

To Test Screen Sharing

Test the availability & compatibility of Java plugin version required to share your screen in the Virtual Classroom.

Important: Java plugin is required only if you are a presenter. Attendees and viewers do not need to install Java plugin.

Java requirements:

For sharing screen, you require Java version 1.5 or later.

Test results

Testing Java installation

Java plugin test: Passed Failed

You require Java plugin version 1.5 or later.

Java is installed and enabled in your browser.

The Java plugin is disabled in your browser. Enable the Java plugin using browser settings.

Install Latest Java Plugin

Test again

Test devices

Troubleshooting Audio Problems

To get help, write to: tzivia@shavei.org

The test for screen sharing failed. What should I do?

If the test for screen sharing fails, you might have to check the status of Java plugin for your browser.

There could one of the following two reasons for failure:

1. Java plugin is disabled. Resolve it by going to browser settings and enable Java plugin

2. The Java version might require an update. Go to Java.com and update

I am facing audio/video & screen sharing problems while using the Virtual Classroom on Google Chrome browser.

For issues related to audio/video streaming and screen sharing, try one of the following fixes

Fix 1

Download and install the Desktop App for Windows^®. Click here ( Desktop App for Mac OS coming soon! )

Fix 2

Upgrade your Google Chrome browser to version 28.0.1500.72 or above. Alternatively, use Internet Explorer, Firefox, Safari, or Opera browsers.

Fix 3

In the existing Chrome (below version 28.0.1500.72), disable the default Flash Pepper (PPAPI) plugin by following these steps:

Type chrome://plugins in the browser tab.
Click + to expand Details in the upper-right area of the screen.
Locate the Shockwave Flash plugin in the list.
Ensure that Shockwave Flash plugin of Type: NPAPI, is in the list and it is enabled.*
Now locate the Shockwave Flash plugin of the Type: PPAPI (out-of-process).
Click Disable for the PPAPI Flash plugin.
Re-launch the browser.

* If you do not have NPAPI type of Shockwave Flash plugin, then download the latest version of the Flash Player from Adobe. On the download page, you may see a message: Adobe Flash Player is built-in but has been disabled. Ignore this message and uncheck the “Yes, install McAfee Security Scan Plus – optional” option before downloading the Flash Player.

I can't hear properly or there is a lag/dropped words in the voice or jerky video?

Lag or dropped words in the voice occur due to slow Internet connection or high CPU usage.
Check speed of your Internet connection using the system configuration test listed above.
Close a few or all applications that you don't require in the class to free system memory.

No one can hear me?

If you are an attendee, ensure that the presenter has allowed you to use mic.
Test your microphone in audio tests; make sure your mic is plugged in and is working.
Check your microphone is not muted.
If a particular attendee is not able to hear you, suggest ensuring
if the speakers are unmute and level of volume is sufficient.

System and Device check for Virtual Classroom

To Test the System Configuration

Issue with your Chrome browser version

Test Internet connection speed

To Test Screen Sharing

Test devices

Troubleshooting Audio Problems