Products · Mitel
Mitel OpenScape Business: support, maintenance and upgrades
Mitel OpenScape Business is the PBX for small and medium-sized businesses, from Unify, which is now part of Mitel. We provide support for it in Sweden and Germany, including on V2, and we upgrade it or connect it to Teams.
We usually start with a simple inventory of your PBX, licences and integrations.
About Mitel OpenScape Business
A PBX for small and medium-sized businesses
OpenScape Business brings telephony, presence, conferencing, voicemail, mobility and contact centre together in one system. According to Mitel, it suits 2 to 500 users per system, and up to 2,000 in a network. The software version, OpenScape Business S, handles up to 1,500 users in one system.
The X1, X3, X5 and X8 models are physical PBXs for IP phones, digital and analogue extensions and wireless phones on site (DECT). OpenScape Business S runs on a server or virtually, for example on VMware or Hyper-V, and can be networked with a physical model when you need ISDN or analogue lines.
The platform is the successor to HiPath 3000. Unify, formerly Siemens Enterprise Communications, was bought by Mitel in 2023, and the system is now called Mitel OpenScape Business. The latest version is V4.
We are a Mitel Silver Partner and authorised for OpenScape (formerly Siemens and Unify, now Mitel). We also look after OpenScape Business for smaller companies, and with us you can speak directly to a technician.
Last updated 31 October 2026.
At a glance
- From 2 to 500 users per system
- Up to 1,500 with the software version S, and 2,000 in a network
- IP, digital, analogue and DECT in the same system
- Physical PBX (X1, X3, X5, X8) or virtual (S)
- Latest version V4
- Works with Teams and Workflow Studio
Support
Support and maintenance for OpenScape Business
We support OpenScape Business in all versions, including V2 after 31 December 2026, and the older HiPath 3000. This applies in Sweden and Germany. If you have an older version, we can upgrade it so that it receives Mitel’s fixes again.
What’s included
- Fault reporting and troubleshooting, with remote access that you control
- Contact with Mitel when a case needs escalating
- Changes to the PBX, such as extensions, groups and permissions
- Mitel’s security fixes, applied according to a plan
- Software Support and licences with Mitel
- Regular reviews of the PBX and a plan for the next step
We describe what a support contract should include in the guide PBX support contracts.
Fault reporting
Report faults as set out in your support contract, which also states the hours that apply. No contract with us yet? Call +46 8 730 66 00 or email info@icomserv.com.
V2 mainboard
When support for the V2 mainboard ends
According to Mitel, the V2 mainboard in OpenScape Business is no longer supported after 31 December 2026. From that date, the system cannot be reached through Mitel’s remote access platforms, such as RSP, and there will be no further software or security updates.
The system does not stop working that day, but new security vulnerabilities stay unpatched. There are three ways forward.
Keep the system. We continue to provide support on V2, with remote access that you control. No partner can provide fixes from Mitel, so we go through what that means for your security.
Upgrade. The mainboard is replaced with a newer one, so that the system receives Mitel’s updates again. Phones, boards and licences can often be kept.
Replace. We move you to another platform or to Teams, step by step. Read more about PBX migration.
Not sure which mainboard you have? We find out in the inventory.
How we help you
What we do with Mitel OpenScape Business
Upgrades
From a V2 mainboard to a newer one, with a check of software version, licences and Software Support.
Virtualisation
From a physical PBX to OpenScape Business S on virtual servers, with a physical model kept for ISDN and analogue if needed.
Teams
Via Direct Routing and an SBC, which the PBX connects to over SIP. The SBC protects the traffic between your network, your operator and Teams.
Automation
Mitel Workflow Studio on top of the PBX, without replacing it.
Replacing the PBX
When the time comes, we move you group by group to another platform or to Teams.
Support takeover
If another provider has looked after your PBX, we take over support with a plan and a parallel period, as part of our third-party PBX maintenance.
Use cases
How Mitel OpenScape Business is used
Telephony and collaboration in one system
Presence, chat, conferencing and voicemail in the same system as telephony.
Several offices
Several systems are networked, with up to 2,000 users at different sites.
Staff on the move
With Unify Phone, staff call from mobile and computer using the same number.
Teams for the office, the PBX for the rest
Users make calls in Teams, while DECT, alarms and analogue devices stay on the PBX.
Smaller contact centre
Phone, email and fax in the same queues, with reports, without a separate contact centre platform.
Wireless on site
DECT phones in the same system as the desk phones, on the physical models.
Works with
- Microsoft Teams via Direct Routing and SBC
- Mitel Workflow Studio
- OpenScape 4000 and OpenScape Voice
- SIP trunks, ISDN and analogue lines
- IP phones, digital and analogue phones, and DECT
- Unify Phone for mobile and computer
What we review first
- Model and mainboard: V2 or newer
- Software version and Software Support status
- Extensions by type: digital, analogue, DECT and IP
- Provider and lines: SIP trunk, ISDN or analogue
- Options: collaboration, contact centre and mobile apps
- Plans for SIP and Teams
How we work
From the first conversation to day-to-day operations
01
Discovery
We review how you work today, which systems you have and what you want to achieve.
02
Proposal
You receive a concrete proposal covering technology, timeline and cost, and we explain our choices.
03
Implementation
We install, integrate and test, and we train your users and administrators.
04
Operations and support
After go-live, we stay with you for support, updates and further development.
Common questions
Frequently asked questions about Mitel OpenScape Business
What happens when support for OpenScape Business V2 ends?
According to Mitel, the V2 mainboard is no longer supported after 31 December 2026. The system does not stop working, but there will be no further software or security updates, and remote access through Mitel’s platforms ends. We can continue to provide support and help you plan the next step.
What does it take to move from V2 to V3?
The mainboard is replaced, and according to Mitel, software version V2R7 is required for the move itself. Phones, boards and licences can often be kept. We go through what applies to your system in the inventory.
Do you also work with smaller companies?
Yes. OpenScape Business is built for small and medium-sized businesses, and we are glad to look after smaller installations too, in Sweden and Germany.
Does OpenScape Business work with Teams?
Yes, via Direct Routing and a Microsoft-certified SBC, which the PBX connects to over SIP. According to Mitel, it requires a Networking licence and valid Software Support.
Does Mitel CX work with OpenScape Business?
It is not among the PBXs that Mitel CX 3.0 is validated against. OpenScape Business has its own contact centre as an option, and Mitel Workflow Studio supports the system.
Do you support HiPath 3000?
Yes, in Sweden and Germany, even if another supplier has looked after the system. We find out what Mitel still provides for your version, and when the time comes we help you move on to OpenScape Business or another platform.
Can we move from HiPath 3000 to OpenScape Business?
Yes, according to Mitel. Depending on the version, the housing, power supply and many boards and phones can be kept, and often only the mainboard, software and licence file are replaced. We go through what applies to your system in the inventory.
Can OpenScape Business run virtually?
Yes, OpenScape Business S. Mitel lists VMware, Hyper-V, KVM, Proxmox and Google Cloud. If you need ISDN or analogue extensions, a physical model is connected to it.
Further reading
Solution
Third-party PBX maintenance
Keep the PBX that works. We take over support for MX-ONE, OpenScape and OmniPCX Enterprise and keep your PBX up to date with the manufacturer’s security fixes.
Guide
PBX lifecycle and end of life: extending its life safely
What manufacturers’ lifecycles mean, and how to keep your PBX secure for many years to come.
Guide
Upgrade or replace your PBX?
Decision support for organisations that run MX-ONE or OpenScape today.
Solution
PBX migration
From an old PBX to a new platform or Teams, step by step, with a rollback plan for every stage.
Guide
PBX support contract: what it should include
Response times, updates, software assurance and remote access: what the contract should say.
Guide
Teams and your existing PBX: coexistence and gradual migration
How to let Teams and your PBX work together while you move at your own pace.
Third-party PBX maintenance
Start with an inventory
Do you have an MX-ONE, OpenScape or OmniPCX Enterprise? We usually start with a simple inventory of your PBX, licences and integrations, free of charge. You then know where you stand, and we can give you a quote for support, operations or replacement.