Image courtesy of I'm a UC Blog
The tutorial then explains how to setup Microsoft Lync to work with Asterisk, including configuring the Voice Policy, dial plan and routes. It assumes you have Lync already installed. If you need step-by-step instructions for installing Lync from scratch, the tutorial points to another guide for that. Integrating Microsoft Lync with Asterisk may be a bit of overkill for most companies. Choosing one or the either might make more sense, simply from a management / TCO point of view. Though if you already invested in SIP-based desktop phones, it might make sense to have Asterisk handle the SIP registrations and act as the gateway since Lync only works with Lync-certified desktop phones due to some proprietary codecs. This eliminates the need to throw away your SIP phones for Lync-compatible ones. Though some phone vendors let you flash the firmware of SIP phones and convert them to Lync-based firmware.
Go check out the tutorial.
