I'm not sure if that helps, but Microsoft has a component (IAS) add-on to ActiveDirectory that allows RADIUS authentication against AD. You can use the RADIUS module in SER to send auth requests to the Microsoft RADIUS server.
If you just want to make calls from SER world to LCS world (without cross-registration), the link you provided should help you along the way. Just take out Asterisk and replace it with SER local user handling (registrar, location lookup and routing).
g-)

elilkumaran s wrote:
Sir/ Madam

I hvn't DEBIAN
I using Fedora 4 in Server. I prefer that Office Communicator because it interface, and if we use X-Lite with SER server, user have to have extra one password. other wise users can use Domain login authentication for Office communicator, no need reenter a password after logon.
My need is Utilize that CISCO ATA 186 with Windows 2003 Active Directory .
if is possible to use Windows 2003 Active Directory account for SER Server in Fedora, then I no need LCS.
I will call from PC users to ATA and ATA to PC users through SER Server.

Now I want to maintain LCS 2005 in Windows Server 2003 & SER server in Fedora.
because PC users like Office Communicator & it facilities (Chat, Video, File Sharing, Remote Assistance),& I have to maintain a communication from guard office  to other staff places but Guarders face difficulties to chat, my thing is better to have a TP communication between guard office & staff.

So that I implement SER Server in Fedora & it client application is X-Lite (like Office communicator for LCS. )
CISCO ATA 186 easily register with SER server and  able to communicate  with  X-Lite  in both direction. 
So If any communication need to Guard Office can use X-Lite & Analog TP which is connected to ATA 186.
other wise communication will be available between all exclude guard office through  Office Communicator (thorugh LCS 2005) with I mention facilities.

Now I plant to merge above server to facilitate communication  between  guard office (guarders hv to use TP through ATA 186) & staff through any one client Application ( X-Lite or Communicator or any other application).

How can I implement Messenger with TP  through ATA 186  like  above ?

I seen a help from http://www.voip-info.org/wiki/view/MS+LCS+2005+%252F+SER+%252F+Asterisk+Integration link
but that help mention LCS<<->> SER<<->>Asterisk<<->> ATA186
But I try to run
Asterisk server on Fedora but it failed (there are lot of config needed).
then I try SER server & I success full on it and runing now on Fedora Core 4. 

I need like this communication LCS<<->> SER <<->> CISCO ATA186 !

Could you kindly help me to solve ?
Thank You
Your truly
Elil

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