Welcome to Fonstone!

A single solution for enterprise communications


Fonstone AG specializes in the implementation of Microsoft Unified Communications in the CTI-infrastructure of companies and provides its customers with consultation and installation services as well as operational support and troubleshooting of Microsoft Unified Communications and messaging solutions.

Fonstone AG focuses its services on the planning and support of Microsoft Exchange and Microsoft Lync solutions and is a gold-certified Microsoft partner. In addition, Fonstone AG is the only Swiss company that is authorized by Microsoft to provide Microsoft Premier Support for Lync Partners (PSLP). With this specific certification Fonstone AG is able to support customers who have Microsoft Lync voice solutions in use. (see also ...)

In addition to Microsoft Gold Partner status for Messaging and Communications Fonstone AG is also a Gold Partner of AudioCodes Ltd. who manufacture gateways and Session Border Controllers for VoIP networks.

In cooperation with uc4you AG Fonstone AG also offer their customers a comprehensive range of training courses on Microsoft products.


Fonstone AG is the first Swiss Microsoft-Certified partner for Microsoft Lync Voice Premiere Support (PSLP).

Telephony is business critical for organizations of all sizes. Clients need 24/7 support that addresses all aspects of voice communication systems including hardware, software, network and system interoperability. Further, businesses need a partner that can provide quick and thorough support independent of the system interfaces. The Microsoft Premier Support for Lync Partners (PSLP) program was created to exactly meet those customer needs. Only Microsoft Gold Unified Communications certified partners that have been certified by Microsoft in the area of support for Lync receive PSLP status. Fonstone AG is the only Swiss Microsoft-certified PSLP partner. Read more...


Press: (Zurich, 6th June 2011)

Conversion of Fonstone GmbH into Fonstone AG. Read more...


Press: (Zurich, 17th November 2010)

Fonstone GmbH, a Swiss Microsoft Gold Certified Partner, announce a resilient Voice solution for connecting branches with Microsoft Lync. Read more...


Fonstone AG

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