Generally speaking, your sound card shouldn’t require any additional configuration and should worknimmediately after you install Ubuntu. The icon for the volume control applet is located at the top right of the Ubuntu Desktop, and it offers a quick way to control the master volume. However, if you want to change your balance or microphone … Read more
Bluetooth is the short-range networking facility that allows various items of hardware to work with each other wirelessly. You can use Bluetooth for everything from file transfers between a mobile phone and computer to employing a wireless keyboard or mouse with your desktop computer. For Bluetooth to work, both devices need to have Bluetooth support. … Read more
Mouse and key repeat speeds are personal to each user, and you may find the default Ubuntu settings not to your taste, particularly if you have a high-resolution mouse such as a gaming model. Fortunately, changing each setting is easy. Configuring Mouse Options Open Applications and in the search bar, type mouse to display the … Read more
C Program to Display the current Date and Time #include<stdio.h> #include<time.h> int main() { printf(“\n\n\t\t C Program to display date time\n\n\n”); time_t t; // not a primitive datatype time(&t); printf(“\nThis program has been writeen at (date and time): %s”, ctime(&t)); return 0; }
Unlike some versions of Linux, Ubuntu doesn’t rely on a centralized configuration software package. Instead, it uses smaller programs to configure hardware. For example, to configure the network, you’ll use the NetworkManager program, and printers are configured using a separate printer configuration program. Because using some of the configuration software involves reconfiguring your entire system, … Read more
Basic Call Flow – SIP Key terms used in SIP: It is important to familiarize with these terms in order to understand basic SIP call flow. Here are few of them: Call flow: It’s a flow diagram of SIP messages — shows an ideal way how a media session carried over two endpoints. Its a … Read more
The DVD-ROM disc supplied with this book is double-sided. This means it’s like a vinyl LP record. To play Side A, simply insert the disc with the Side A label topmost. To play Side B, insert the disc with the Side B label topmost. Side A contains the release version of Ubuntu on which this … Read more
There is an old, so-far-unfulfilled prophecy about “the Year of the Linux Desktop.” Many have predicted that Linux would eventually replace Windows as the de-facto desktop OS, but so far it hasn’t happened. Might things be changing? Could the long-awaited “Year” finally be here? Linux is not about market share, but just plain sharing. To … Read more
SIP : Session Initiation Protocol Session Initiation Protocol (SIP) is one of the most common protocols used in VoIP technology. It is an application layer protocol that works in conjunction with other application layer protocols to control multimedia communication sessions over the Internet. SIP Endpoint Communication What is VoIP Technology Before moving further, let us … Read more
SIP – Headers A header is a component of a SIP message that conveys information about the message. It is structured as a sequence of header fields. SIP header fields in most cases follow the same rules as HTTP header fields. Header fields are defined as Header: field, where Header is used to represent the header … Read more