Saturday, October 1, 2011

Big Blue Button Server Installation

  • UBUNTU 10.04 LTS Installation
  • Installation Of Basic Packages For Video Transmitting
  • Big Blue Button Server Installation

Requirements :-
  1. An Ubuntu 10.04 32-bit or 64-bit server
  2. 2 GB of memory
  3. Root access to the server
  4. 5G of free disk space
  5. Port 80 is not in use by other applications

Step 1 :- Install UBUNTU 10.04 On server Machine.
Step 2 :- Install All Basic Packages. ( Office, k3b, flash player etc.)
Step 3 :- Install the BigBlueButton apt-get repository key Using following command

# Install the package key
wget -O- | sudo apt-key add -

# Add the BigBlueButton repository URL and ensure the multiverse is enabled
echo "deb bigbluebutton-lucid main" | sudo tee /etc/apt/sources.list.d/bigbluebutton.list

echo "deb lucid multiverse" | sudo tee -a /etc/apt/sources.list

Step 4 :- Install a Voice Conference Server

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:freeswitch-drivers/freeswitch-nightly-drivers
sudo apt-get update
sudo apt-get install bbb-freeswitch-config

Step 5 :- Install Big Blue Button.

sudo apt-get install bigbluebutton

Step 5 :- Do a clean Restart.
To ensure BigBlueButton has started cleanly, enter the following commands:

sudo bbb-conf --clean
sudo bbb-conf --check

  • AUDIO Problem Solution :-
sudo bbb-conf --check

sudo bbb-conf --clean

Monday, March 21, 2011

Configuring NetConnect on Ubuntu 10.04

This is a basically just a simple guide on how to use your Reliance/tata indicom Netconnect Broadband+ connection in Linux . I am not expert in Linux ,but I managed to configure and connect in Linux quiet easily .

So here’s what you do .

Stuff you Require

1. USB modem/Data Card with activated connection along with your password and username.

2. Machine with Linux installed

3. ubuntu 10.04 DVD

4. wvdial ( A generic software client in Linux)

To install wvdial

a) If you do have an alternate internet connection in Linux . Open a terminal and type in

sudo apt-get install wvdial (with your alternate internet activated)

b) If you don’t have an alternate internet connection

Go to System->Administration->software sources. Add cd as a source and close . Insert your Linux OS CD .Now open a terminal and type in

sudo apt-get install wvdial


Activating your connection

1) First get your connection activated and connect it to the internet using a windows or an Apple machine . Open up a web page just to make sure that its active .

Pre-Configuration Procedures

2) Boot up Linux

3) Open up a terminal and key in su (Stands for Super user and it gives you administrative privileges )

4) Plugin your USB modem and unplug any other devices you have installed (including any wired/wireless internet connections you may have).

5) Next key in lsusb (This command lists all the usb devices currently connected to your system )

Your output should be similar to this

Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 12d1:1412 Huawei Technologies Co., Ltd.
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

It may vary slightly depending on your modem make (Huawei or quallcom).

6) Make sure to note down the number that you get . Here for example it would be 12d1:1412

7) Next key in modprobe usbserial vendor=0x12d1 product=0×1412 ,

make sure that the number you enter for your vendor and product are the number you got for your lsusb command.

Configuring software client wvdial

Now we are going to use wvdial in Linux to connect to the internet .wvdial is just a generic internet client which can be used to connect to any internet connection that requires dialing . For example : your landline Dialup connection or in our case a mobile broadband internet Its kind of like an all purpose internet client software.

8 ) open up wvdial’s configuration file using this command

gedit /etc/wvdial.conf
9) Paste the below code into the window that pops up ( make sure to enter your relevant details ).

[Dialer Defaults]

Init1 = ATZ

Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0

Stupid Mode = 1

Modem Type = USB Modem

ISDN = 0

Phone = #777

New PPPD = yes

Modem = /dev/ttyUSB0 (This may also be dev/ttyUSB2 depending on where you plugged in your device)

Username = 9xxxxxxxxxx (your username, should be a number )

Password = 9xxxxxxxxxx (Your password , should be the same number)

CBaud = 460800

Delete all the comments in the brackets . The fields you should edit are Modem , Username and password the only ones with comment .

Save and exist .

10) That’s it ! your done , that was simple was nt it ?

Fire up a new Terminal and key in sudo wvdial , enter your root password in the password prompt . it should generate a long list of codes finally ending with Primary DNS Secondary DNS . If it does you have got your connection working successfully ! enjoy.

Closing your connection :

You can disconnect your client by selecting your terminal and pressing Ctrl+C

Friday, January 7, 2011

Remote Desktop Sharing in Ubuntu

Configuring Remote Desktop

First you need to go to system -> Preferences -> Remote Desktop

Once it opens you should see the following screen

In the above screen you need to configure remote desktop preferences for sharing and security

For Sharing

you need to tick the box next to the following two options

Allow other users to view your desktop
Allow other users to control your desktop

For Security

you need to tick the box next to the following two options

Ask you for confirmation (If you tick this option some one need to click on allow from remote desktop once it connected if you don’t want you can untick this option)
Require the user to enter this password:
Password: Specify the password

Connecting from Ubuntu Machine

Open your terminal from Applications—>Accessories—>Terminal and enter the following command

vncviewer -fullscreen

now you should see the following message asking for password enter the password after complete success you can see VNC authentication succeeded message and starting remote desktop

VNC viewer version 3.3.7 – built Jul 4 2006 10:04:48
Copyright (C) 2002-2003 RealVNC Ltd.
Copyright (C) 1994-2000 AT&T Laboratories Cambridge.
See for information on VNC.
VNC server supports protocol version 3.7 (viewer 3.3)
VNC authentication succeeded

If you want to quit vncviewer

Press ‘F8′ and select Quit viewer

Connecting from Windows machine

If you are trying to connect from your windows machine you need to install vncviewer of your choice i have installed from here Install program once you install this you can opem from start—>All programs—>RealVNC—>VNC Viewer 4—>Run VNC Viewer once it opens you should see the following screen here enter the remote machine ipaddress:0 format and click OK

Now it will prompt for password enter your password and click OK

Now on the remote machine you should see the following screen asking for permission to allow this connection you need to click on allow this will come up only if you tick “Ask you for confirmation” option under sharing

Once it connected you should see the remote machine desktop like the following screen