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OpenStage Digital Phone

OpenScape Business

OpenScape Business is the modern and future-proof all-in-one solution for Unified Communication & Collaboration, specially tailored to the requirements of small and medium-sized enterprises with one or more locations.

OpenScape Business offers small and medium-sized enterprises everything they need for their individual and diverse communication requirements, unified in a single flexible and scalable solution. The OpenScape Business architecture allows use independently of the existing telephony infrastructure regardless of whether this is classic telephony, IP or DECT. From powerful telephony to a feature-rich set Unified Communication (UC) solution, OpenScape Business always provides enterprises with up to 500 subscribers, or 1000 subscribers in one network, with the right solution.


All-in-one solution for small and medium-sized enterprises

OpenScape Business is the all-in-one solution for small and medium-sized enterprises and offers:  


Integrated voice services, presence management (presence state), Drag&Drop conference, visual voicemail (voiceboxes), AutoAttendant, Multimedia Contact Center, IM (Instant Messaging), mobility, directory access with database connection, fax, integration in business processes and much more


UC clients individually matched to the work station and work processes


Interface integration of OpenScape Web Collaboration


Solutions for customers with one site or network-wide solutions with multiple sites


Uniform solution architecture

OpenScape Business provides a uniform solution architecture:

OpenScape Business models

Various OpenScape Business models are available for different existing infrastructure sizes: X3, X5, X8. In addition, it is possible to operate the OpenScape Business software on a standard server (softswitch), of course also in fully virtualized environments.


Supported subscribers

Total number of IP, analog and digital subscribers


X1, X3, X8: up to 500 subscribers


OpenScape Business S: For up to 1500 IP subscribers


Optimized hardware concept

VoIP and data components are already integrated on the mainboard.



UC is already provided on the mainboard with UC Smart:


For up to 150 subscribers on the UC Booster Card


For up to 250 subscribers on the UC Booster Server


For up to 250 subscribers for OpenScape Business S

UC Suite enables more UC subscribers and advanced UC functionality for X3, X5, X8, and Business S:


For up to 150 subscribers on the UC Booster Card


For up to 500 subscribers on the UC Booster Server


For up to 1500 subscribers for OpenScape Business S


Communication interfaces

All communication interfaces required for diverse and heterogeneous requirements are available:


IP, digital, analog, DECT


All common trunk interfaces for voice communication


Support for new SIP/IP-based CO lines now integrated


OpenScape Business Platforms


X5R X5W X8

OpenScape Business

X5R (Rack) X5W (Wall) X8

Connection to service provider

ITSP channels (SIP provider) 60
Max. 8 SIP Providers
Max. 8 SIP Providers
Max. 8 SIP Providers
ISDN S2M (PRI) 30 30 180
Max. number of line channels 250 250 250


Analog subscribers  52 68 384
Digital subscribers 56 56 384
IP subscribers 500 500 500
Cordless/DECT (CMI) 32 32/64 250
Max. number of subscribers 500 500 500

Setup & environmental conditions

Setup  Rack Wall system Standard system
(also for installing in rack)
Dimensions (H x W x D in mm) 155 x 440 x 380 (3.5 U) 450 x 460 x 200 490 x 440 x 430
Weight  approx. 8 kg approx. 8 kg approx. 34 kg
(fully equipped)
Power supply 

The models, by default, are designed for mains operation.

Rated input voltage (AC): 100 to 240 V

Rated frequency: 5060 Hz

Battery supply (DC): 48 V

Power consumption Depends on hardware platform and expansion stage
Environmental conditions 

Operating conditions: +5 to +40 C (+41 to +104 F)

Humidity: 5 to 85% 

Housing color Gray/Green Ice-blue Gray/Green

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