This is Part 1 of a two part series of replacing windows clients with linux in an enterprise environment.

Part 2 is available here

Many businesses use Microsoft Communicator as an Instant Messaging tool, but this can be replicated by a pidgin extension called Pidgin-Sipe.

I am using a Debian system so you can install it as follows.

To install this plugin, you can open a terminal and type

sudo apt-get install pidgin-sipe

Or else open Synaptic and search for sipe, click and install pidgin-sipe.

Once installed, open Pidgin. Click on Accounts=>Manage Accounts and then click on Add.

Select Office Communicator from the list and then enter your credentials.

NOTE:
For my system and how I had proxy settings set up, I clicked on the third tab Proxy and set it to no proxy.

Add the account and accept any of the Sipe Server certificates and you should be ready to go.