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Tablet mit geöffneter Unternehmenswebsite spirit21.com, dargestellt in einem modernen digitalen Arbeitsplatz mit Stylus-Stift. | SPIRIT/21
Von Lars Leupold Collaboration

Migration from ISDN to central SIP trunk with Microsoft Teams Phone

Customer requirement

A company wanted to replace its local telephone lines and ISDN technology and migrate to a centralized SIP trunk with Microsoft Teams Phone. The solution needed to be highly available and support existing telephone systems in parallel.

Challenge

In addition to the parallel use of Microsoft Teams and the existing Unify OpenScape infrastructure, uninterrupted operation was crucial. The configuration of the Teams Voice environment had to be completely rebuilt.

Project highlights

  • Switch to centralized IP telephony with SIP trunk
  • Flexible voice migration & integration of existing systems
  • High availability & fallback options
  • User-friendly handover without changes in handling

SPIRIT/21 solution

SPIRIT/21 developed a centralized SIP trunk architecture with direct routing, number assignment and routing logic via SBCs. All number formats were consistently adopted so that users did not notice any changes in handling.

Advantages for the customer

  • Complete replacement of ISDN with modern IP telephony
  • High availability thanks to central SIP infrastructure
  • Flexible migration and reverse migration possible
  • Integration of contact center solutions and 3rd party systems
  • Future-proof through Microsoft Teams Phone

Part of our Smart Workplace portfolio

SPIRIT/21 connects people, locations and systems - with Microsoft Teams, SIP trunking and voice expertise at enterprise level.

Learn more

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Lars Leupold

Digital Workplace Solutions & Services (DWS&S)

Phone: +491784472806
E-Mail:

We have been advising and supporting our clients in the various areas of the digital workplace for many years. Together, we develop ideas and solutions for an efficient, safe workplace for optimal collaboration, high productivity and employee satisfaction.

Lars Leupold