OpenStage M3

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The OpenStage M3 DECT handsets are a family of wireless devices designed to perform in harsh environments. The family comes with variants covering different alarm options and also use in potentially explosive environments where moisture, dirt, shocks or high ambient noises could compromise communication quality. With its device protection class of IP65 it suited perfectly for these scenarios. Although the OpenStage M3 family is designed for these environmental conditions, it looks exquisite with its large 1.8” TFT color display and with an up to date user interface. As well as great style, it offers optimum functionality, with excellent voice quality optimized for noisy environments, Bluetooth interface and its black/silver color.
The OpenStage M3 handsets are the successors of the Gigaset M2 professional handsets.


The OpenStage M3 DECT handset family consists of the following variants:

  • OpenStage M3 – DECT handset; with integrated basic alarm functionality (e.g. alarm button)
  • OpenStage M3 Plus – DECT handset, with integrated advanced alarm features (e.g. no movement-, man down- alarms)
  • different chargers and accessories

The DECT handsets from this family designed for use in explosion hazard areas will be provided in a second phase.

Key Features

The following table provides an overview. This list is not exhaustive. Please refer to the detailed operating instructions for more information.

Mobility Features

Multi-cell capability

  • Roaming
  • Seamless connection Handover during a call
  • Bearer handover in case of disturbances
  • Display message when leaving the radio network


  • Encrypted voice transmission regarding DECT standard
  • Secure system logon

Multi-DECT system capability option for parallel registration of the OpenStage M3 up to four DECT systems

Feature description of the OpenStage M3


  • Illuminated keypad
  • MWI (Message Waiting Indicator) key
  • 5-way navigation key
  • Keypad lock on/off
  • Key for all ringers off
  • Talk key functions:
    • when pressed briefly: redial list
    • when held down: dial state
  • Free programmable Display-key
  • 2-way side key for simple volume control during a call


  • Illuminated graphical display
  • brilliant TFT display, 65k color, 128*160 pixel resolution
  • Color scheme and screen saver settings
  • Display of fonts and symbols in different situations in large fonts
  • Configurable timeout of the display
  • Display-Languages of the Handset (26 languages):

German, English, French, Italian, Spanish, Portuguese, Dutch, Danish, Norwegian, Swedish, Finnish, Czech, Polish, Turkish, Greek, Hungarian, Russian, Croatian, Slovenian, Roman, Serbian, Catalan, Bulgarian, Bosnian, Ukrainian, Arabian

Display in idle state

  • Status display:
    • Battery charging
    • Received field strength
    • Ring tones off
    • Warning tone on
    • Keypad lock on
    • Bluetooth activated
  • Local editing of base station name
  • Notices of (Display-indicate with the first off hock):
    • own call number
    • Date and time


  • Picture out of media pool store
    • alternative to pictures: analogue or digital clock
  • Screensaver replaces the notices in idle


  • Handset is preset
  • Individual settings
    • Fast access on functions and numbers
    • Assignment of numeric key/ display key
    • Display: Language, Color-Schema, Contrast, Illuminating, Screensaver
    • Automatic Call acceptance on/off
    • handsfree-/earpiece volume
    • ring tones, melodies

Media Pool administered:

  • Monophonic ring tones (Sounds)
  • Polyphone melodies (Sounds)
  • Pictures for:
    • Screensaver
    • Caller pictures (ClIP pictures)

Alarm clock

  • activated/deactivated
  • Period: Monday – Friday or daily
  • Wake-up call is signaled with selected Sound

Appointments (Calendar)

  • They can remember let up to 30 appointments
    • Appointments of the day are indicated,
    • Appointment can be supplemented with text,
    • Appointment call is signaled with selected Sound,
    • Indicated text, date and time are indicated.
  • List of missed appointments

Phone book

  • Storage possibility of the directory
    • Up to 500 entries for all directories
    • Fast access on a number (speed dialing)
    • Up to three phone numbers with accompanying name, surname (private/office/mobile), e-mail address, appointments with signaling, VIP-notation, CLIP pictures
  • phone book administration via PC (Gigaset QuickSync = PC application)
    • via Bluetooth-Interface
    • via Mini- USB interface
  • Saving/loading phone book data from/to HiPath Manager (HiPath Cordless Enterprise)
  • Access to System phone book
    • LDAP system telephone database (only with HiPath Cordless Office/HiPath Cordless IP)
    • HiPath Manager (HiPath Cordless Enterprise)

Message signaling

  • Illuminated MWI (Message Waiting Indication) key alerts users of new messages
  • Signaling of the new message through press the MWI-key

Call signaling

  • Automatic call acceptance when the handset is removed from the charging unit (configurable)
  • Silent alarm (vibration alarm)
  • Visual/acoustic call signaling
  • Display of call number and caller name
  • Distinction between internal and external calls
  • Ring tones and melodies:
    • 5 standard ringer tones
    • 15 polyphonic ringer melodies
  • Ring tones can be deactivated while attention tone is activated
  • Setting of different ringers for internal and external calls
  • Volume can be set in 5 steps plus crescendo

Handset lock

  • with 4-digit PIN


  • Lithium-Ionen battery pack
  • capacity: 1000mAh
  • a battery pack is supplied with the phone
  • Charging
    • in power-off mode
    • in power-off mode with activated PIN protection
    • in operating mode
  • Low battery warning tone (configurable)

Headset 1
Headset connection via:

  • Corded: 2,5 mm jack
    • Jabra GN2000
    • Jabra BIZ 2400
    • Jabra BIZ 1900
  • Cordless: Bluetooth
    • Jabra Supreme UC
    • Plantronics Voyager PRO UC

Accessories (e.g. carrying aids) 2

  • One Belt clip is supplied with the phone

PC Interface

  • Bluetooth, Mini- USB
  • Bluetooth Specification: V2.1, the following profiles are available:
    • Headset-HSP, Data-SPP, Handset-HFP, Object-Push- profile OPP

PC Application

  • Gigaset QuickSync
    • Phone book synchronization
    • Loading from Screensaver, CLIP-pictures, melodies and ringer tones

Compatible with HiPath Positioning System (HPS)

  • Localization of mobile users (only with HiPath Cordless Enterprise) using HiPath Positioning System

PC-Software (Gigaset QuickSync)

remark to 1 2

Alarm Features

Basic Alarm Features (for all OpenStage M3 models)

  • Alarm button with optional different behavior by long- and short press
  • Alarm monitoring by an LED at the front of the handset
  • Up to 3 preconfigured alarm numbers
  • Automatic call with alarm
  • Acoustic signalization (emergency signal) at alarm location
  • Automatic alarm generation if handset is out of range/switched off or battery level is low
  • Configurable key lock (including or excluding alarm button)
  • Alarm configuration protected by a Service PIN
  • Location information of handset with alarm

Advanced Alarm Features (for OpenStage M3 Plus)

  • All the basic alarm features
  • No movement-, man down-, time-, escape-, technical- and pull cord- alarm
  • Each alarm type can use an own alarm number
  • Configurable pre-alarms
  • Advanced alarm scenarios w/ and w/o Alarm-Server, e.g. OpenScape Alarm Response Server (OScAR)

Connectable Devices

The OpenStage M3 handset can be connected to the following systems:

HiPath 4000

  • HiPath Cordless Enterprise from V3.38.0-CV415
  • This HiPath Cordless Enterprise version is released from HiPath 4000 V2
    • Adaptations only for SLC24

HiPath 3000 & OpenScape Business

  • HiPath Cordless Office
  • HiPath 3000 from V9 R2.4.0_047
  • OpenScape Business from V1
    • Adoptions only for SLC16N and SLCN

OpenScape_Office & OpenScape Voice

Tests using predecessor releases of the systems were not carried out. The use of the handset in earlier system-versions should be possible, but functional restrictions may occur.

The following Gigaset QuickSync Software is supported:

  • Gigaset QuickSync from 8.3

Technical data

  • standard battery type (supplied with the phone)
    • 1 * Lithium-Ionen battery pack 1000 mAh
  • Dimensions
    • Handset 154 x 56 x 26 (H × W × D in mm)
    • Weigth (incl. batteries) approx. 166g
    • Charging unit 89,5 x 86 x 36 (H × W × D in mm)

See also