OpenScape Voice

Your Easiest Path to Unified Communications

OpenScape Voice is a major component of Unified Communications Portfolio. It provides organizations with a carrier-grade voice communications system that delivers high resiliency and advanced features on its platform. The media event server delivers a dual software image and signal redundancy to deliver the high level of uptime that is expected from carriers. As a native SIP-based soft switch, OpenScape Voice is independent from the underlying hardware. This provides high reliability for voice communications and a scalable architecture, which supports up to 100,000 users per cluster.


OpenScape Voice



OpenScape Enterprise voice solutions are the foundation for your future all IP Network. Flexible deployment options are based on your business needs allowing you to protect existing investments, reduce operational expenses and increase employee productivity.

A virtualized architecture for software applications is one of the most recent data center innovations. Virtualization allows multiple software applications to run as virtual machines independent of the underlying hardware. This can increase server hardware utilization by 50% to 70%. Another key benefit of virtualization server consolidation – directly lowering costs for energy and maintenance.

The OpenScape Enterprise portfolio of applications makes extensive use of virtualization architecture. The extensive use of virtualization within the OpenScape Enterprise portfolio makes possible more efficient, lower cost, private cloud solutions.



  • - Consolidation of a network of legacy systems into a private cloud with OpenScape Branch providing remote office survivability

  • - Centralized administration for network routing and dial plans

  • - Zero touch deployment and maintenance services across applications and network elements

  • - Replacing expensive PSTN trunks with SIP Trunking from OpenScape Session Border Controller

  • - IP Least Cost Routing reducing overall PSTN toll and long distance charges



Carrier Grade Reliability

  • - Massively scalable up to 500,000 users allowing for flexible deployment options

  • - 99.999% reliability – maintain high level of business continuity

  • - Geographical node separation for simplified Disaster Recovery planning

Designed for Data center / IT environment

  • - Virtualization of applications deployed on commercial servers

  • - Reduced number of servers and the capability of our solution to be hardware-agnostic.

  • - Server consolidation - applications and virtual machines deployed onto a VMware host can use different guest operating systems

  • - Hardware independence - applications can be deployed onto any hardware platform, assuming VMware has certified it and it meets the resource requirements of the application

  • - Virtualized for Green IT reducing corporate carbon footprint

  • - Flexible deployment models – private / public cloud, 
premise based and hybrid models

Open Standard Framework

  • - Pre-built in integrations for Outlook and Lotus Notes

  • - Integrations for social media and groupware

  • - SDKs / API and developer portal for 3rd party application innovations



“We were impressed with the performance of the OpenScape systems’ resiliency in maintaining full functionality while being subjected to malicious exploits and attacks,”

Rob Smithers, CEO, Miercom.


Replacing our old Centrex phone system with a SIP-based communications platform has really paid off for the Town of Enfield. The new OpenScape Solution significantly reduced our telephony costs while giving us a host of new communications capabilities.”

Paul Russell, CTO, Town of Enfield


“Siemens Enterprise Communications and Black Box offered an innovative and forward-looking solution and service set to take our University forward. Even more, this partnership, literally launched the same week as the University’s new strategic plan, becomes a very real, pivotal component of CAU’s overall advancement strategy. One of our strategic priorities is to increase institutional capacity and fortify our infrastructure. The new Siemens Enterprise Communications/Black Box platform squarely meets that objective. We haven’t just leveled our telecommunications playing field. We have raised our position on it.”

Dr. Carlton Brown, President, Clark Atlanta University


“We compared IP Centrex solutions from different vendors. Only OpenScape Voice from Siemens Enterprise Networks met the stringent requirements with respect to reliability and availability demanded by the carrier segment, paired with an uncompromising diversity of functions.”

Axel Schmitz-Tewes, Project Manager, IN-telegence GmbH