What is an Active Directory, and How Does It Work ?

 An active directory is a directory structure used on Microsoft Windows based computers and servers to store information and data about networks and domains. It is primarily used for online information and was originally created in 1996. It was first used with Windows 2000.

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The working of Domain Name System’s ..

What Is DNS ?

The Domain Name System, or DNS, is used to resolve human-readable hostnames, such as http://www.vikrantambhore.in, into machine-readable IP addresses, such as 61.17.93.11,  DNS also provides other information about domain names, such as mail services.

Cisco 7942G gets Stuck on Upgrade Screen!!

In my office we had 10 Cisco 7942G IP phones , One Phone’s that were useless as it’s  were stuck  on Upgrading screen while, I did an update and now every time it restarts or if I do a factory reset it goes to the upgrading screen gets and ip address and just sits there.
If I watch my tftp server it doesn’t get any requests from the phone. It was skinny… I updated to SIP 8.0.3… I just did it to my third phone and it works fine… So I know my firmware is good…
But the one phones I did before didn’t work…