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Tom Arbuthnot MVP
Tom Arbuthnot MCSM Communications

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Common Area Phone support coming to Skype for Business Online Cloud Phone System

Published 12/02/2018 - 2 Comments

In Skype for Business Server (and Lync Server) we have a Common Area Phone option. Phones are often located in building lobbies, cafeterias, employee lounges, meeting rooms. Unlike other phones in Skype for Business Server, common area phones do not have individual active directory user accounts assigned to them. They are actually connected to contact objects.

In Skype for Business Server, these phones don’t require an active directory user licence or a Skype for Business user licence, which saves some cost. In addition, Common Area Phones had some unique features, such as hot desking, where a phone uses a common area profile/number by default but users can “sign into” that phone and make it their own extension.

In Skype for Business Online, there has been no equivalent, meaning if you had phones in common areas, you had to buy and assign them a regular user account.

Recently AudioCodes mentioned “Common Area Phone (CAP) online support” in their 400HD Series IP Phones for Microsoft Skype for Business Version 3.0.4 release notes. From their notes:

Common Area Phone (CAP) online support. Phones can now be defined as CAPs when using a cloud PBX. Defined per physical phone rather than per user, a CAP requires a special sign-in method called ‘CAP provisioning’, exclusive to cloud PBX. Before signing in, users must enable the phone as a CAP and then sign in using this special ‘CAP provisioning’ method. CAPs in server mode are unchanged. The change applies only to cloud PBX.


A URL and Pairing Code are displayed:


The administrator points the browser to the URL, and signs into Office 365 and locates the phone:

image image

The administrator enters the Pairing Code in the Microsoft web page and clicks Provision:


to Microsoft’s Cloud PBX is performed:


Update: Here is the AudioCodes screenshots from a colour phone, thanks, Daryl Hunter











Update: Polycom updated me with details of their Phone UI that supports this too in UCS 5.7

Alejandro Araujo Rajzner a PFE at Microsoft also confirmed on Tech Communities that a Common Area Phone SKU is coming, due on 1st March 2018 (these dates are always subject to change). Thanks for the heads up Alejandro.

Microsoft Teams has IP Phone support on the roadmap. There are no specific details for Common Area Phones yet.

Tom Arbuthnot

Tom Arbuthnot

Principal Solutions Architect at Modality Systems
Tom Arbuthnot is Principal Solutions Architect at Unified Communications specialist Modality Systems. He is a Microsoft Certified Master and MVP, blogger, regular on The UC Architects Podcast, and speaker at events including Microsoft TechEd and Ignite. He co-runs The Microsoft UC User Group London.


Max Grillenberger - 15/02/2018 Reply

Hi Tom,

I can only find the FW for AudioCodes 440 HD. Do you have more information how to get the ?


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