Those of us who have lived in the US and Canada for years have gotten used to dialing 411 for directory assistance. As you probably know, you can use a 411 service to get address and phone number information for an individual person or place of business.
If you’re going with a pure VOIP deployment with Lync, your SIP trunk vendor might not provide this functionality, but you can still allow your users to dial a free 411 service. There are a handful of them available, and I’ve found that Bing’s free 411 service works great for this.
Bing 411 is a toll free audio service that gives you directions, traffic information, weather conditions, movie show times, and more from your phone. To leverage this through Lync, you can create a normalization rule will allow users to dial 411 and have that translate to Bing’s toll free number.
Here’s a screenshot of how you would add this normalization rule to the global dial plan:
For more details on Bing 411, check out disoverbing.com/mobile/411