365 Enterprise Voice for Skype

A lot of announcements around since ignite about enterprise voice on 365,

can anyone clarify any of the following:

Will any on-remise infrastructure be required?

will all billing for calls be done through Microsoft?

what on earth does the architecture look like for this on 365...be really interested to know how MS will handle all of the SIP trunking and customer accounts with a Telco like BT to get onto the PSTN...do they have massive pipes into BT or some

May 18th, 2015 7:13am

Hi,I have no detailed information about Enterprise Voice for office 365.

It will be possible to have Enterprise Voice with Office365 without a on-premise installation.

Which payment option you will have with Office365, we have to wait for more information from Microsoft.

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May 18th, 2015 3:46pm

Hi KingMT,


Theres a related article, you can take a look at it.



What are the options for getting EV into the solution for customers with Office 365 Enterprise E4 licenses?

In todays market, there are three main solutions:

  1. Hosting Lync Voice We have seen great growth in this area. Customers looking to outsource their PBX can get the same feature and function from Lync hosting as they would from deploying Lync on-premises. This is typically a partner-to-partner opportunity, as most SIs dont have hosted datacenters. You can learn how hosted EV works with Office 365 our deployment guide, Deploying Lync in a Multi-Forest Architecture. At TechEd Europe 2014 in October, there was a session about Multi-Forest Architecture that you can watch on demand.
  2. Appliance solutions This is also a growing space, and many of our traditional vendors from SBC/Brand Office solutions are moving into this business to offer a more complete solution. Partners like Audiocodes, Sangoma, and StartReady have offerings.
  3. On premises  This is the traditional offering for Lync EV. Private cloud is also in this category. We see partners deploying an on-premises solution, wrapping it with a managed service offering, and giving customers a per user per month investment option. It aligns to the Operational Expense model while still allowing customers to use their existing communications investments until they depreciate out.


Best regards,


May 19th, 2015 2:31am

there has been a session concerning Enterprise Voice with Office365 during Ignite 2015. Maybe you can find it here:


As other users already mentioned, Microsoft has approved that you DON'T need any onpremise server to use this feature. It will also be possible to use existing numbers, MS is working with partners (AT&T) to port existing numbers. Features like  transfer, call forwarding, team call will work with this solution. 

A tecnical preview will start in the US in this sommer. Other Countries will follow 2016.

Be aware that MS strongly recomments to use Azure Expressroute (http://azure.microsoft.com/en-gb/services/expressroute/)  when consuming Enterprise Voice from the cloud. Using ExpressRoute you will have direct connection to an Azure Datacenter (e.g. the Skype4B Server there) and a stable, reliable network connection.

As fare as I learned payment will be done by MS over the Office365 portal

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May 19th, 2015 3:39am

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