DECT Handsets

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OpenStage SL4 prof Handset only final.jpg OpenScape DECT Phone S5 no border.jpg OpenStage M3.jpg
OpenStage SL4
DECT Phone S5
OpenStage M3
DECT phone Award.jpg

Unify offers a family of DECT Handsets that are ideal for employees who are constantly on the move, rarely staying in a single office long enough to warrant having a desktop phone. These Handsets enable locally mobile users to freely move about the office or campus with always-on access to a full range of HiPath and OpenScape calling features, excellent voice quality, low weight, and exceptional design.

The Unify DECT Phone family of Handsets operates with HiPath Cordless infrastructure to deliver industry leading cordless telephony solutions based on the DECT radio technology standard. With Cordless infrastructures from Unify and those DECT Handsets, employees can move freely across the office and yet still be reached by peers or customers at any time.

  • Award-winning design and intuitive user interface
  • A reserved frequency band and DECT-standard encryption ensure a high level of security
  • Seamless handover of active voice connections between overlapping Cordless base stations enables users to move across the office or campus without dropped calls or lost connections
  • Long standby and talk times
  • All DECT Handsets from Unify are made in Germany

Phone range


The OpenStage SL4 professional is the slimmest and smallest DECT cordless handset in the portfolio; it satisfies the most stringent requirements in terms of high end functionality and design and suits perfectly to various jobs. It is ideal for employees who are rarely at their desks. OpenStage SL4 professional is available for TDM and SIP environments.


The OpenScape DECT Phone SL5 is the successor of the OpenStage SL4 professional.


The OpenScape DECT Phone S5 extends Unify best-in-class voice quality and feature-set to an elegant DECT cordless handset, making it the ideal device for managers and team leaders that require robust functionality from the office, the parking lot, or the boardroom. OpenScape DECT Phone S5 is available for TDM and SIP environments.


The OpenScape DECT Phone S5 Base system is a phone system based on the DECT standard for connection to the analog port of many HiPath-/OpenScape systems.
OpenScape DECT Phone S5 Base is designed as a desktop device with a shelf for the OpenScape DECT Phone S5 handset. Excellent voice quality and high immunity to eavesdropping are prominent features of this system.


The OpenStage M3 builds upon the portfolio’s industry-leading quality and features to deliver a robust phone for industrial environments and vertical markets. The OpenStage M3 Plus features a number of alarms to ensure the safety of workers in hazardous environments. In addition, the OpenStage M3 Ex (which also has a Plus variant with advanced alarm capabilities) is approved for usage in potentially explosive atmospheres. It is suitable for gas zone 1 and dust zone 21 explosive areas, it complies with the ATEX- directive 94/9/EC. All OpenStage M3 models are IP65 certified. OpenStage M3 is available for TDM and SIP environments.


You can use this page to look for different carrying aids, belt clips and special-headsets -> DECT Handset accessory

Every DECT Handset package contains one belt clip and a battery package.


This page shows the different Declaration of Conformity (DoC) for the DECT Handset portfolio -> Declaration of Conformity

The DECT Handsets are shipped with a printed document providing brief instruction regarding installation and operation. For both user and administrators, a comprehensive and updated documentation is provided as PDF files, please consider the different DECT Handset pages.

symb-docu.gif Documentation in further languages, software and other downloads can be found on
Any comments to the files provided here?


more informations to the handset portfolio from Unify