1) Integration Method – Sometimes one of the toughest challenges with Lync to PBX integration is figuring out how to make the two systems talk to each other while at the same time ensuring all features remain functional. When integrating Lync with a PBX you need to understand what options are available from the PBX side. For example, if you have an existing IP/PBX, then you may be able to do a simple Direct SIP connection between the PBX and Lync. If you have a traditional TDM PBX you more than likely will need to purchase an audio gateway to provide the integration.

2) User Experience – One of the key things you want to ensure during integration between Microsoft Lync and a PBX is that users aren’t required to change dialing habits. For example if a user dials 5000 to get a receptionist on the PBX, then a user in Lync should be able to dial 5000 to get a receptionist. This goes for dialing patterns as well. If users dial area code, prefix, and extension to call a long distance number, then the dial plans in Lync will need to ensure they can do the same when using Lync. The key take away is to ensure users can dial from Lync in the same manner as they did from the PBX.

3) Voicemail – The only supported voicemail system for Lync is Microsoft Exchange Unified Messaging. If you aren’t using Exchange Unified Messaging today, you will need to implement this as part of your Lync rollout to continue voicemail services for Lync Enterprise Voice users.

The above mentioned points are key items to consider when looking at Lync to PBX integration. There are several other points that may need to be considered depending on your current voice platform thus a clear integration plan needs to be mapped out prior to jumping into Lync to PBX integration.

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Dustin