VoIP Technology

This is from Fierce VOIP The foundation of VoIP networks and VoIP technology is a set of protocols called H.323. These protocols were established by the Telecommunications Sector of the International Telecommunication Union (ITU-T). H.323 specifies components, protocols, and procedures for real-time point-to-point and multipoint multimedia communication over packet-based networks. It also sets interoperability guidelines

Defination of VOIP

From Vonage Voice over Internet Protocol (VoIP) is a reliable technology for transmitting ordinary telephone calls over your internet connection using packet linked routes, also called IP Telephony . Internet Protocol involves the transmission of telephone calls over a data network like the Internet that can reach any telephone on the public-switched telephone network (PSTN).

Session variables problem

I met the session variables problem in IIS6. I use global.asa as web application. Same coding, it works under IIS5 of windows 2000 and IIS5.1 of windows xp, but it lost session variables under IIS6 of windows2003. Sometimes I need to log in more than one time to get in the required page. Tonight, I

Scode upgraded

Upgrade Scode 0.1.5 to Scode0.1c Details as below: Download Scode from it site or My local copy here:Download file Almost same as my Security Code Plug-in installed successfully Only a little difference. In step 2, 6) Open lib/MT/Template/Context.pm Change the code following Scode’s readme file. Rebuild whole site. Done. (updated August 13, 2005)


This program is known from a Chinese Blog. Later I found the author is a PHD student of UBC, Matthew Brown. AUTOSTITCH is the first fully automatic 2D image stitcher. Sometime we call it a panorama program. Capable of stitching full view panoramas without any user input whatsoever, AutoStitch is a breakthrough technology for panoramic

In-Out Board

This is a web-based In-Out Board program. It is totally free to download, use. Pentacle (In Out Board) was started as an idea I had in the early part of 2003 when I was supposed to be running the intranet site design side of a local insurance brokerage company. It was almost 2 months from

Pagerank stop working

After I installed the new version Google Toolbar 3.0.123, abut 2 hours later, I found that Page Rank information are always unavailable. Even the site: www.google.com In the begining I thought it happened because of the new version’s problem. I downgrade to Version 2.0. Still unavilable. I checked the help of Google Toolbar. It said:

Wireless Network Concern

Now more and more network build by wireless equipments. There are still something concern. 1) What is the range of wireless? Types of Wi-Fi Network Protocol Maximum Speed Average Speed Wireless Range 802.11a 54Mbps 27Mbps 12m indoors, 30m line-of-sight outdoors 802.11b 11Mbps 4.5Mbps 30m indoors, 120m line-of-sight outdoors 802.11g 54Mbps 7Mbps (in compatibility mode), 16Mbps

Change File Date

Found a good place, where a lot of freeware can be downloaded. Small and perfect. This is FileDate Changer, only 20,710 bytes, around 21KB. Download file The site is NirSoft. Go there, you will find freeware utilities.