Server

Brought to you by the MS Hardware group and others - scripts and information on saving power in your datacenter and/or server room with Windows 2003. It is the framework that the newer Vista power management support was built off of and fleshed out more. By the way, if you have an AMD CPU running under Windows 2003, I highly recommend downloading the updated CPU drivers for much better support overall. This is especially true on the dual core CPUs due to the dual TSC-out-of-sync problem you can run into without proper drivers.

Read more about it here.

Getting familiar with powercfg.exe is worth looking into, also. You can read about it more here.

There is a recommended hotfix KB article for Windows 2003 RTM that was published before SP1 came out, located here

It looks like there is a more recent KB article that is specific for Windows 2003 SP1, located here.

You will want to use the right KB for the right service pack level, which most likely is SP1.

KB 924050 - Telephony API-based applications stop responding and you cannot disconnect telephone calls on a Windows Server 2003-based telephony server

KB 919009 - An incoming fax call may stop responding and not finish in Windows Server 2003

I originally spotted the reference to KB 919009 here.

I'm having some serious deja vu because a few months ago I was fighting with a server that had multiple CPUs that was used as a fax server. About once a day, the TAPI service and Fax service would hang as if it were stuck inside of a kernel call. I suspected there might have been a race condition or a deadlock somewhere, because when I "crippled" the machine to only use one CPU overall, the hangs decreased by a good 95%. Every once in a great while under heavy load, the fax service would quit.

I am going to work on getting both of these KB articles installed on that server and see if it makes the problem go away.