Start learning CSS : Chapter 1

html-css-website

What is CSS? CSS stands for Cascading Style Sheets Styles define how to display HTML elements Styles were added to HTML 4.0 to solve a problem External Style Sheets can save a lot of work External Style Sheets are stored in CSS files CSS Saves a Lot of Work! CSS defines HOW HTML elements are to be displayed. Styles are normally saved in external … Read more

Office internal chat system : openfire-spark

Openfire is a powerful instant messaging (IM) and chat server that implements the XMPP protocol. Download Openfire software from the below link. http://www.igniterealtime.org/downloads/ You can also download from direct link http://www.igniterealtime.org/downloads/download-landing.jsp?file=openfire/openfire_3_9_1.exe You need to install this software on server. Again you need to download spark IM from the below link. http://www.igniterealtime.org/downloads/download-landing.jsp?file=spark/spark_2_6_3.exe You can install this … Read more

RTMP – Real Time Messaging Protocol

Real Time Messaging Protocol or RTMP is mainly serving for high speed transmission of audio, video and data between flash player and a server. Initially developed by Macromedia, the protocol is now owned by Adobe, and specifications about it have only partially been released for public use. According to those specifications, the RTMP protocol has … Read more

Advantages and Disadvantages of HTTP, RTSP, and RTMP

Advantages and Disadvantages of HTTP, RTSP, and RTMP Which technology and delivery mode will work best for you? The answer depends on many data points. Let’s explore a few. How large is your anticipated daily traffic or single event? Do you need to protect your content from being downloaded locally and republished by the user? … Read more

HTTP versus RTMP : Which Way to Go and Why

Hypertext Transfer Protocol (HTTP) refers to the protocol used to deliver webpages and images across the Internet worldwide. HTTP is an adopted, open standard-the most ubiquitous mode of delivery online. HTTP is a “stateless” protocol; think of it as an airline ticket to anywhere. HTTP can be delivered by a variety of web servers, both … Read more

Adding Listen, Whisper, and Barge to FreePBX or Asterisk

Adding Listen, Whisper, and Barge to FreePBX or Asterisk Listen: Monitor an agents call. The manager can hear both the spied-on and bridged channels, but they cannot hear the manager. Whisper:  Whisper to the agent. The manager can hear both the spied-on and bridged channels, and the spied-on channel (agent) can also hear the manager, … Read more