Add a Lync/Office Communicator account to Pidgin/Ubuntu
Thanks to the SIPE Project (http://sipe.sourceforge.net/), setting up a Lync/Office Communicator account has never been easier on Linux. The SIPE Project are the creators of a SIPE (SIP Exchange) plug-in for Pidgin, the IM client previously known as Gaim. I will be using Ubuntu 10.10 64 bit for my example. If you are using a different version of Linux, I recommend installing the SIPE plugin from source. Instructions for compiling from source can be found here:
To begin, we will need to install Pidgin and the SIPE plugin for Pidgin:
sudo apt-get install pidgin pidgin-sipe
Congratulations! You now have an IM client setup in Linux that can Connect to a Lync/Office Communicator server! That was easy, wasn't it?
To configure your account, open Pidgin:
Applications > Internet > Pidgin Internet Messenger
Choose Add and select Office Communicator from the protocol list. Fill out the fields as necessary:
(You may have to change the username format to DOMAIN\user)
From the main menu, choose Buddies > Add Buddy.
Select your Buddy's username or email adddress and choose their alias, then hit Add.
You should now see your buddy in the Buddies list.
If you like Pidgin, go ahead and install all of the plugins with this simple command:
sudo apt-get install pidgin*
Hope you enjoy!
*** Update 10-14-2011 ***
Tested to work on Ubuntu 11.10 32 bit
*** Update 10-20-2013 ***
Tested to work on Ubuntu 13.10 64 bit