Unify OpenScape Voice and OpenScape Business lifecycle

See also

Sources

1. 1
   In January 2016 Atos completed its acquisition of Unify from Gores Group and Siemens.

   Atos completes the acquisition of Unify from Gores Group and Siemens · headline and first paragraph · Checked 2026-10-14
2. 2
   On 24 January 2023 Atos announced exclusive negotiations with Mitel to sell its Unified Communications and Collaboration business, Unify, with closing expected in the second half of 2023.

   Atos enters into exclusive negotiations with Mitel for the sale of its Unified Communications & Collaboration business (Unify) · headline and paragraph on conditions and expected closing · Checked 2026-10-14
3. 3
   Atos stated an enterprise value of EUR 590 million for its 2016 acquisition of Unify, a business with about EUR 1.2 billion in annual revenue at the time.

   Atos completes the acquisition of Unify from Gores Group and Siemens · body paragraphs on consideration and enterprise value · Checked 2026-10-14
4. 4
   The vendor wiki states that Circuit, Unify's former cloud collaboration service, has reached end of life and that a migration path is offered.

   OpenScape Business - Unify OpenScape Experts Wiki · section on discontinued components / Circuit · Checked 2026-10-14
5. 5
   Mitel announced on 2 October 2023 that it had closed its acquisition of Unify, the UCC and CCS businesses of the Atos group.

   Mitel Closes on Transaction with Atos to Acquire Unify · headline and first paragraph · Checked 2026-10-14
6. 6
   In its hybrid communications strategy, Mitel names OpenScape Business among the core platforms it remains committed to.

   A Blueprint for Success: Mitel's Hybrid Communications Strategy · section on core platforms ('We remain committed to core platforms') · Checked 2026-10-14
7. 7
   In its hybrid communications strategy, Mitel names OpenScape Voice among the core platforms it remains committed to.

   A Blueprint for Success: Mitel's Hybrid Communications Strategy · section on core platforms ('We remain committed to core platforms') · Checked 2026-10-14
8. 8
   Mitel told customers that their contracts and payment terms remained in place through the 2025 restructuring, and that business continued in the ordinary course.

   About Mitel's Financial Restructuring · Customer FAQs Q4 and section 'About Our Restructuring' · Checked 2026-10-14
9. 9
   At closing, Mitel told Unify customers they could keep counting on the same solutions and services, and it committed to notify customers of any future product or service plans.

   Mitel Closes on Transaction with Atos to Acquire Unify · section 'Continuity for partners and customers' · Checked 2026-10-14
10. 10
    Through the 2025 restructuring, ownership of Mitel moved from Searchlight Capital Partners to its lenders, and a new board was to be appointed.

    About Mitel's Financial Restructuring · General FAQs Q5 · Checked 2026-10-14
11. 11
    In October 2023 Mitel said it was combining portfolio roadmaps and expected to share its vision for an integrated portfolio in early 2024.

    Mitel Closes on Transaction with Atos to Acquire Unify · section 'Future-looking plans' · Checked 2026-10-14
12. 12
    On 9 March 2025 Mitel entered into a restructuring agreement with an Ad Hoc Group of senior lenders, certain junior lenders and other stakeholders, implemented through a Chapter 11 process.

    About Mitel's Financial Restructuring · General FAQs Q1 and Q4 · Checked 2026-10-14
13. 13
    Mitel states that its 2025 restructuring cut debt by about USD 1.15 billion, cut annual cash interest by about USD 135 million, and raised about USD 125 million of new funding.

    About Mitel's Financial Restructuring · section 'About Our Restructuring', 'What this means' · Checked 2026-10-14
14. 14
    Mitel completed its financial restructuring effective 20 June 2025.

    About Mitel's Financial Restructuring · section 'About Our Restructuring' · Checked 2026-10-14
15. 15
    The terms of Mitel's 2023 acquisition of Unify were not disclosed.

    Mitel Closes on Transaction with Atos to Acquire Unify · first paragraph · Checked 2026-10-14
16. 16
    On 9 March 2026 Mitel announced Mitel WX, an AI-enabled, voice-first communications offering for the entire workforce, with availability stated as mid-2026.

    Mitel Introduces Mitel WX to Bring AI-Enabled, Voice-First Communications for the Entire Workforce · headline; final body paragraph before 'About Mitel' · Checked 2026-10-14
17. 17
    Mitel has told partners that MiVoice Connect has moved into an end-of-cycle lifecycle process, unlike the OpenScape platforms it lists as core.

    5 Ways Mitel Aligns Portfolio and Future Innovations · lifecycle paragraph ('transitioned into an end-of-cycle lifecycle process') · Checked 2026-10-14
18. 18
    Mitel has told partners that MiVoice Office 400 has moved into an end-of-cycle lifecycle process, and says it will keep supporting existing installations for many years.

    5 Ways Mitel Aligns Portfolio and Future Innovations · lifecycle paragraph ('Mitel will continue to support your installation for many years') · Checked 2026-10-14
19. 19
    As of 13 October 2026 no firm Mitel WX dates for OpenScape customers had been published, and the SiliconANGLE column advises OpenScape customers to get firm dates before planning migrations.

    Mitel WX bets next phase of unified communications will be won on the floor, not in the meeting room · closing advice paragraph ('OpenScape customers should receive firm dates before planning migrations') · Checked 2026-10-14
20. 20
    A 13 October 2026 SiliconANGLE analyst column reports that the Mitel WX rollout prioritises MiVoice Business, with OpenScape Business support to follow in the next couple of quarters.

    Mitel WX bets next phase of unified communications will be won on the floor, not in the meeting room · paragraph on phased rollout ('to follow in the next couple of quarters') · Checked 2026-10-14
21. 21
    A 13 October 2026 SiliconANGLE analyst column reports that Mitel WX support for OpenScape Voice, aimed at the largest enterprises, follows MiVoice Business in the next couple of quarters.

    Mitel WX bets next phase of unified communications will be won on the floor, not in the meeting room · paragraph on phased rollout · Checked 2026-10-14
22. 22
    As of 27 February 2025, OpenScape CP phones were Zoom Phone certified.

    Zoom and Mitel announce rollout of AI-first hybrid communications and collaboration solution · paragraph 3 · Checked 2026-10-14
23. 23
    As of 27 February 2025, Zoom and Mitel stated that certification of the OpenScape SBC was complete, supporting Zoom's BYOP and BYOC direct routing.

    Zoom and Mitel announce rollout of AI-first hybrid communications and collaboration solution · paragraph 3 · Checked 2026-10-14
24. 24
    Mitel states that OpenScape 4000 scales from 300 to 12,000 users per system, with networking up to 100,000 users.

    OpenScape 4000 · section 'Benefits of OpenScape 4000' · Checked 2026-10-14
25. 25
    Mitel states that over 235,000 OpenScape Business systems are actively deployed worldwide.

    Optimize OpenScape Business Solutions for Enterprise Efficiency · section 'European Market Focus with Proven Scale' · Checked 2026-10-14
26. 26
    The vendor wiki describes a migration path from HiPath 3000 to OpenScape Business in which usually only the mainboard, system software and license file are replaced, while housings, power supplies and many peripheral boards and devices can be reused.

    OpenScape Business - Unify OpenScape Experts Wiki · section on migration from HiPath 3000 · Checked 2026-10-14
27. 27
    HiPath user licenses cannot be used with the OpenScape Business TAPI 120/170 providers, which differ from the HiPath TAPI 120/170 V2 providers.

    OpenScape Business - Unify OpenScape Experts Wiki · TAPI section · Checked 2026-10-14
28. 28
    OpenScape Business single and networked configurations can be licensed perpetually or by subscription, while OpenScape Business with Unify Phone is subscription only.

    Optimize OpenScape Business Solutions for Enterprise Efficiency · Features Comparison table, licensing row · Checked 2026-10-14
29. 29
    Mitel's OpenScape Business page refers to continuous updates through 2025 and 2026 roadmap commitments but gives no release or end-of-support dates.

    Optimize OpenScape Business Solutions for Enterprise Efficiency · section 'European Market Focus with Proven Scale' · Checked 2026-10-14
30. 30
    OpenScape Business S, the software-only server variant running on SUSE Linux Enterprise, supports up to 1,500 IP or UC users.

    OpenScape Business - Unify OpenScape Experts Wiki · model capacity section, OpenScape Business S · Checked 2026-10-14
31. 31
    Mitel positions OpenScape Business, alongside MiVoice Business, for small businesses stretching into the mid-market.

    5 Ways Mitel Aligns Portfolio and Future Innovations · segmentation paragraph ('MiVoice Business and OpenScape Business serve small businesses...') · Checked 2026-10-14
32. 32
    Mitel states that OpenScape Business supports up to 500 users on a single system and up to 2,000 users across networked systems.

    Optimize OpenScape Business Solutions for Enterprise Efficiency · Benefits; Key Features 'Multi-Site Network Connectivity'; Features Comparison table · Checked 2026-10-14
33. 33
    After the V2 mainboard end of support, remote access through Mitel remote platforms such as RSP stops working for those systems, and software and security updates can no longer be provided.

    OpenScape Business Feature Enhancements - Unify OpenScape Experts Wiki · section 'Version V3R4', V2 mainboard reminder · Checked 2026-10-14
34. 34
    The OpenScape Business V2 mainboard is no longer supported after 31 December 2026.

    OpenScape Business Feature Enhancements - Unify OpenScape Experts Wiki · section 'Version V3R4', 'Reminder end of support V2 Mainboard - 31.12.2026' · Checked 2026-10-14
35. 35
    For OpenScape Business systems on the V2 mainboard, the vendor wiki recommends upgrading to the V3 mainboard.

    OpenScape Business Feature Enhancements - Unify OpenScape Experts Wiki · section 'Version V3R4', V2 mainboard reminder · Checked 2026-10-14
36. 36
    Features discontinued from OpenScape Business V3 include myPortal Smart, myPortal for OpenStage, OpenStage Gate View, Xpressions Compact, the integrated VPN solution and XMPP.

    OpenScape Business - Unify OpenScape Experts Wiki · section listing features discontinued from V3 · Checked 2026-10-14
37. 37
    In OpenScape Business V3R4, encrypted voice (DTLS-SRTP) and local media paths for Unify Phone work only with the V3 mainboard and OpenScape Business S.

    OpenScape Business Feature Enhancements - Unify OpenScape Experts Wiki · section 'Version V3R4', Unify Phone items · Checked 2026-10-14
38. 38
    The vendor wiki page OpenScape Business Feature Enhancements, last edited 17 December 2024, lists releases from V1R1 to V3R4 and no V4 release.

    OpenScape Business Feature Enhancements - Unify OpenScape Experts Wiki · section headings Version V1R1 to Version V3R4 · Checked 2026-10-14
39. 39
    Mitel offers OpenScape Voice as an on-premises virtualized deployment, as a multi-tenant private cloud or hosted service for service providers, and as a hybrid deployment.

    Optimize Enterprise Communication with OpenScape Voice · section 'Deployment Models' and Deployment Comparison table · Checked 2026-10-14
40. 40
    OpenScape Voice licensing is perpetual or subscription for on-premises deployments and subscription for private cloud or hosted deployments.

    Optimize Enterprise Communication with OpenScape Voice · Deployment Comparison table, licensing row · Checked 2026-10-14
41. 41
    Mitel states that a single OpenScape Voice platform supports up to 100,000 users, with larger capacity when systems are networked.

    Optimize Enterprise Communication with OpenScape Voice · Key Features, 'Scalability and Multi-Tenancy'; Deployment Comparison table · Checked 2026-10-14
42. 42
    Mitel positions OpenScape Voice, alongside OpenScape 4000 and MiVoice MX-ONE, for large enterprise customers with tens of thousands of seats.

    5 Ways Mitel Aligns Portfolio and Future Innovations · segmentation paragraph ('OpenScape Voice, OpenScape 4000, and MiVoice MX-ONE serve large enterprise customers...') · Checked 2026-10-14
43. 43
    By mid-2025 Mitel reported JITC certification for OpenScape Xpert with the OpenScape Voice platform.

    Mitel mid-year strategy: hybrid communications 2025 · section 'Delivering on the Promise of Hybrid Communications' · Checked 2026-10-14
44. 44
    The two ownership changes OpenScape customers saw in about two years are most likely Unify's sale by Atos to Mitel (closed 2 October 2023) and Mitel's own move from Searchlight to lender ownership (effective 20 June 2025).inferred

    About Mitel's Financial Restructuring · General FAQs Q5, read together with the Mitel 2023-10-02 closing release · Checked 2026-10-14
45. 45
    Atos's January 2023 announcement excluded Unify's NG 9-1-1 business from the exclusive negotiations with Mitel.

    Atos enters into exclusive negotiations with Mitel for the sale of its Unified Communications & Collaboration business (Unify) · body paragraph on transaction scope · Checked 2026-10-14
46. 46
    Mitel has introduced Unify Phone across all Mitel solutions as a streamlined, serverless UC option for deployments that do not need full collaboration and meeting features.

    A Blueprint for Success: Mitel's Hybrid Communications Strategy · Unify Phone paragraph · Checked 2026-10-14
47. 47
    In January 2023 Atos described Unify as having revenues of about EUR 550 million and about 3,000 employees worldwide.

    Atos enters into exclusive negotiations with Mitel for the sale of its Unified Communications & Collaboration business (Unify) · body paragraph describing Unify · Checked 2026-10-14
48. 48
    On 27 February 2025 Zoom and Mitel announced global availability of their AI-first hybrid communications solution for OpenScape 4000.

    Zoom and Mitel announce rollout of AI-first hybrid communications and collaboration solution · paragraph 3 · Checked 2026-10-14
49. 49
    On 27 February 2025 Zoom and Mitel announced global availability of their AI-first hybrid communications solution for OpenScape Voice.

    Zoom and Mitel announce rollout of AI-first hybrid communications and collaboration solution · paragraph 3 · Checked 2026-10-14

Documents

Cite this page

WarmTransfer. (2026, October 14). Unify OpenScape Voice and OpenScape Business lifecycle. WarmTransfer. https://warmtransfer.net/knowledge/unify-openscape-platform

@misc{warmtransfer-unify-openscape-platform,
  title  = {Unify OpenScape Voice and OpenScape Business lifecycle},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/unify-openscape-platform},
  note   = {Verified 2026-10-14}
}