July 25, 2008. Dr. Randy Pausch passed away today. He was a forever eacher for us all.

My thoughts and prayers go out to Randy's family. I wish them all well, knowing that their loved one made a very positive impact in the lives of millions of people worldwide.

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Did you watch the "Professor Randy Pausch's Last Lecture"? It is a great lecture about life! It was for 400 Carnegie Mellon students but millions are watching online now.

In this section, we are providing free ebooks on computing, networking and telecom technologies for download. We either obtained the permission from the copyright owner of the ebooks, or the copyright of these ebooks allows us to do such distribution. To further benefit the community, you are welcome to provide us more copyright-permitted titles for community download.

Articles about other VOIP Protocols:

Virtual Private LAN Services (VPLS) is a solution that can provide layer 2 Virtual Private Network (VPN) services over Ethernet networks. It uses a combination of Ethernet and MPLS to meet the needs of carriers and customers alike. VPLS allows customer networks at geographically diverse locations to communicate with each other as if they were in the same LAN. The WAN and MAN becomes transparent to all customer locations. Ethernet VPN based on VLPS and MPLS provides more benefits than other alternative layer 2 or 3 VPN technologies:

This section list all articles on hardware components of computer and networking devices and related technologies. 

This section lists articles related to TCP/IP technologies. 

A packet is a block of user data, together with a protocol header which includes address and administration information, to be delivered to the correct destination by the switches or routers in the network. A message may be broken down into multiple packets and each packet is transmitted individually and can even follow different routes to its final destination. Once all the packets forming a message arrive at the destination, they are recompiled into the original message. This process is known as Packet Switching.

Two basic approaches are common to Packet Switching:

This section lists articles related to network management and operations. 

This section lists articles on networking equipment and system related technologies. 

An 802.16 wireless service provides a communications path between a subscriber site and a core network such as the public telephone network and the Internet. This wireless broadband access standard provides the missing link for the "last mile" connection in metropolitan area networks where DSL, Cable and other broadband access methods are not available or too expensive. The Wireless MAN technology is also branded as WiMAX.