Disclaimer - Time flies, and I received a message from IT Central Station to update my past reviews, including the one I wrote some months ago about Lync Server 2013. Honestly, it would have been easy to just update a few lines here and there and keeping the contents (that were still good) online. However, I have tried to use wisely the aforementioned period of time and my knowledge of Lync and of his potential is now deeper. So, I decided to throw away the previous review (including a good number of views it had) and to write a completely new post.

What is Lync Server 2013

Lync is a Unified Communications (U.C.) product. It means that in a single product you have a native integration between many different communication tools (IM, conferencing, telephony, e-mail). Lync adds to the standard U.C. capabilities the integration with other Microsoft solutions (SharePoint, Exchange and Active Directory). The aforementioned integration uses information already available in your corporate software to give a better and more complete communication experience to the users. A remarkable example of the aforementioned capability, that I often use as an example, is the so called Skill Search. Skill search is a feature included in the user search of the Lync client that enables the use of working skills information coming from SharePoint as a filter.

Why Lync is Interesting

Lync Server 2013, from a certain point of view, is like two different solutions in a single product (also if a strong point of Lync is that you can move seamlessly inside the different available features). I will try to explain my point of view:

• First “aspect” of Lync is the part dedicated to communication tools like IM and conferencing. From this point of view you could find similarities (and important dissimilarities) with other U.C. products. Lync is able to federate different companies and (also) external networks like Skype adds a flexibility that gives value for Lync enabled companies. User experience is really good, with great clients/apps available for almost any existing platform and device. Again, integration with other Microsoft services, adds communication tools, like scheduling a Lync meeting from the Outlook calendar or seeing presence and launching a Lync IM from the Exchange Outlook Web Access (OWA) interface.
• Second “aspect” of Lync is the Enterprise Voice, a modern VOIP system that is able to replace the existing Private Branch Exchange (PBX) telephony and to overtake it with many additional features.
• Lync has many mechanisms dedicated to grant high availability (see my Lync 2013 High Availability post here on IT Central Station, http://www.itcentralstation.com/product_reviews/lync-server-review-by-fabrizio-volpe) so that your telephony system will never let you down.
• The client is really easy to use and it is powerful, giving users access to features like Call Via Work (enabling outgoing calls from any Lync client, including the apps for mobile devices, always showing your work phone number and not the real one) or Call Parking (put a call on hold from one telephone and then retrieve the call later, also from another phone, dialing an internal number).
• Last (but not least) there are many voice routing mechanisms inside Lync, so that you are able to select the path that has the lower cost for a call or the one that is compliant with your company policy with a lot of flexibility

Both the aforementioned points are different faces of the same product, but also looking at them as separate solutions, we have a Lync is great competitor in the U.C. field.

Weak Points of Lync Server 2013

• Lync on-premises is costly (you have to pay both user and server licenses).
• A deployment of Lync is never trivial and, if we include the Enterprise Voice features, it requires real experts to obtain the best results.
• The Office 365 version of Lync (Lync Online), less costly and complex than the on-premises solution, at the moment is not a viable solution, if you require telephony features.
• Lync hybrid (on-premises and Cloud mixing) is constrained by the aforementioned limits in Lync Online
• Large meetings on-premises require an infrastructure sizing that many companies could not be able to deploy

What Will Change for Lync in the Future  

If you look at the list of the weak points, you can easily imagine that a solution for the pain points in the list is something that Microsoft is working on. The new “Mobile-First, Cloud-First” strategy that Microsoft has embraced involves all its products and it will have for sure an impact on VNext, the temporary name experts use for the forthcoming release of Lync.  

What is our primary use case?

What is most valuable?

What needs improvement?

For how long have I used the solution?

What do I think about the stability of the solution?

What do I think about the scalability of the solution?

How are customer service and support?

Which solution did I use previously and why did I switch?

How was the initial setup?

What about the implementation team?

What's my experience with pricing, setup cost, and licensing?

What other advice do I have?

Which deployment model are you using for this solution?

What is our primary use case?

What needs improvement?

For how long have I used the solution?

What do I think about the stability of the solution?

What do I think about the scalability of the solution?

How are customer service and support?

How was the initial setup?

What about the implementation team?

What's my experience with pricing, setup cost, and licensing?

What other advice do I have?

Which deployment model are you using for this solution?

Intro and Scenario

Some months ago, Microsoft added to its Office 365/Skype Online offer Cloud PBX with PSTN calling (Public Switched Telephone Network is the aggregate of the world's circuit-switched telephone networks). 

Cloud PBX gives the capability to connect Skype for Business (S4B) Online users to the PSTN with no existing on-premises deployment.

Your telco, in such a scenario, could be Microsoft itself but this kind of solution involves some interesting downsides.

Microsoft should be able to offer phone numbers in many different countries that have dissimilar regulations and that will have different carriers and providers, each one trying to offer something more interesting than competitors.

The alternative to the aforementioned scenario (and a more down-to-earth solution) is having all Skype for Business workload in the Cloud with minimum footprint on-premises, just to connect S4B users to local PSTN services (using SIP or ISDN).
This is what Microsoft calls Skype for Business Cloud Connector Edition (previously, you may have heard names like MinTop or Minimal Topology).

While I will not deep dive the specifications of this solution, the implications it has must be understood from any customer that is evaluating a Cloud based VOIP system like this one

CCE Overview

CCE is a downloadable package from Microsoft.  Inside the package, you will have four virtual machines running on Hyper-V that you will have to deploy in your DMZ. 
As you can see in the following schema (from the TechNet post Plan for Skype for Business Cloud Connector Edition ( https://technet.microsoft.com/en-us/library/mt605227.aspx) CCE acts as a bridge between your local telco provider and the Microsoft Cloud.

Deploying more than a single CCE on a site will add resiliency and increase the number of supported calls.

Note that, in this kind of scenario, you have purchase PSTN conferencing from Microsoft or from audio conferencing provider (ACP) partner if you want to add dial-in conferencing.

In addition, from a security point of view, the Directory Services inside the CCE have no communication with your production Domain Controllers.

Is CCE useful for My Company?

In the TechNet post Plan your Cloud PBX solution in Skype for Business 2015 or Lync Server 2013 ( https://technet.microsoft.com/en-us/library/mt612869.aspx) Microsoft offers an interesting "block diagram” to help customers selecting the right solution.

CCE is seen as something fit for greenfield deployments, while existing Skype for Business infrastructures are suitable to work with Cloud PBX directly.

Vendors like Audiocodes are already offering support to the CCE onboard of their Gateways and Session Border Controllers (SBCs).

That is interesting because to talk with the local PSTN you usually already have the requirement for a gateway/SBC.

Therefore, CCE will probably add small or no cost to what you already had to spend anyway.

Takeaways

CCE is an interesting proposal to realize an hybrid voice deployment (Cloud services and local telco) with little effort.

Removing the Skype for Business (on-premises) deployment from the requirements to use Cloud PBX with PSTN calling simplifies the whole process of moving Enterprise Voice (VOIP) to the Cloud.

Having CCE integrated with gateways is another help in making the aforementioned Cloud adoption straightforward.

What is our primary use case?

How has it helped my organization?

What needs improvement?

For how long have I used the solution?

What do I think about the stability of the solution?

What do I think about the scalability of the solution?

What other advice do I have?

What is our primary use case?

How has it helped my organization?

What is most valuable?

What needs improvement?

For how long have I used the solution?

How has it helped my organization?

What is most valuable?

What needs improvement?

For how long have I used the solution?

What do I think about the stability of the solution?

What do I think about the scalability of the solution?

How is customer service and technical support?

How was the initial setup?

What other advice do I have?

What is most valuable?

What needs improvement?

For how long have I used the solution?

What do I think about the scalability of the solution?

Which solution did I use previously and why did I switch?

How was the initial setup?

What other advice do I have?