500 specialists across three countries. One single phone number.
How Switzerland's timber-construction pioneer worked with Baggenstos to replace its traditional telephone systems in Switzerland, Germany and Luxembourg with Microsoft Teams Voice and standardise its communication.
Building bridges for efficient connections between Switzerland, Germany and Luxembourg: In 2023, Blumer Lehmann underwent a transformation to new communication technology.
The company said goodbye to its old telephone system, which had reached its limits, and began the transition to the modern, integrated and widely used Microsoft Teams telephone solution with the aim of making communication more efficient.
Blumer Lehmann AG
The Blumer Lehmann AG is a pioneer at the forefront of the timber industry and in timber and silo construction. With around 500 dedicated specialists at locations in Switzerland, Germany and Luxembourg, as well as worldwide project assignments, the company develops the diverse possibilities of wood and sets new international standards.
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{{Referenz (/blumer-lehmann) | Valentin Niedermann}}
{{Referenz (/blumer-lehmann) | Thomas Graf}}
Facts & Figures
Initial situation and objectives
At the start of the project, Blumer Lehmann in Switzerland used a carrier SIP (Session Initiation Protocol) trunk to which the old classic telephone system was connected. The employees still used traditional landline telephones and wireless handsets. In the branch offices, the company used different proprietary telephony systems from various national telephone companies.
The aim of the project was to simplify communication and telephony between the locations and to replace the old telephone system. This included the introduction of a standardised, future-oriented Microsoft Teams telephony solution to ensure more efficient and better integrated communication.
In addition, the company aims to standardise the various national telephony systems in order to simplify user management and administration and optimise communication processes throughout the organisation.
Solution & Implementation
The project was carried out in several stages in close collaboration to achieve the goal of a simplified and modernised communication infrastructure:
- Replacement of conventional telephone systems: the existing telephone systems were replaced by the modern Microsoft Teams telephony solution.
- Individual employee accounts: Each employee was given a personal Microsoft Teams account, enabling direct communication between employees. This included user training and the introduction of mobile devices via the data network in the system, which increased communication flexibility and accessibility.
- International implementation: The telephony solution with Microsoft Teams was gradually standardised across all locations. This significantly improved communication between the various national and international offices.
Challenges
The project ran smoothly from a technical perspective, but there were a few organisational hurdles to overcome. For example, the switch from wireless telephones, or more precisely DECT telephones, in production to user-orientated Microsoft Teams telephony. Smartphones were introduced as a solution, which ensure mobile telephony with the Microsoft Teams app. The employees were trained in groups and supported in setting up the new end devices.
Results
The switch to Microsoft Teams telephony brought the following results thanks to good cooperation:
- More efficient IT infrastructure: The implementation of cloud solutions led to a modernised and more powerful IT infrastructure. As a result, communication is also maintained and serviced using the same IT resources.
- Technical changeover: A smooth migration to an advanced cloud telephony platform was realised, including modern connections to the public telephone network. The old telephone network was dismantled.
- Improved customer service and communication: Microsoft Teams provides employees with a standardised communication solution. The transition to cloud-based telephony has also increased communication efficiency at all locations.
- Successful introduction and ongoing support: Internal training courses made it easier for employees to switch to the enhanced communication solution. In addition, support was and continues to be provided for setting up and using the new technologies.
Why Baggenstos?
The solutions offered were precisely tailored to the specific needs and requirements of Blumer Lehmann. The awards as Microsoft Solution Partner Modern Work with the specialisations "Adaption and Change Management", "Calling for Microsoft Teams" and "Meetings and Meeting Rooms for Microsoft Teams" were clearly reflected in the expertise of the project.
As a solution partner, we also have leading technical expertise and have proven our high-quality services and managed services in numerous successful projects.
► Here you can find a Overview of our certifications.
Many thanks for the good cooperation
We would like to express our sincere thanks for the good cooperation in terms of efficient, secure and future-oriented communication, which optimally supports the needs of all employees and represents another important step for Blumer Lehmann AG on the way to a future-oriented corporate strategy.

Integrating Microsoft Teams telephony across the DACH region was a complete success thanks to Baggenstos' help. It has also given us more efficient and closer communication within and with Switzerland, Germany and Luxembourg.
Valentin Niedermann
Head of Technology / IT / Security, Blumer Lehmann AG

The introduction of Microsoft Teams telephony has changed the way we work for the better. In some cases we also had to establish and provide training on new rules for working with the new software. Every employee is now more directly connected, which has led to closer and more effective collaboration.
Thomas Graf
IT Team Lead, Blumer Lehmann AG
About
Industry & size
Blumer Lehmann AG is a pioneer and market leader in the timber industry as well as in timber and silo construction. With around 500 dedicated specialists at locations in Switzerland, Germany and Luxembourg, and projects deployed worldwide, the company unlocks the diverse possibilities of timber and sets new international benchmarks.
Core business
From timber construction and silo construction to the production of timber components for architecturally demanding projects worldwide. Blumer Lehmann combines traditional craftsmanship with state-of-the-art manufacturing technology – projects such as the Swatch headquarters in Biel and the Elephant House in Zurich bear the company's signature.
Distinctive feature
The international set-up, with locations in three countries and projects deployed worldwide, calls for a communication infrastructure that overcomes language barriers and national borders. Proprietary telephone systems from various national providers stood in the way of this goal.
IT environment
500 employees at multiple locations in Switzerland, Germany and Luxembourg. In Switzerland, a SIP trunk ran with classic landline phones and DECT handsets in production. The foreign subsidiaries used various proprietary systems – a patchwork that made IT administration unnecessarily complicated.
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